454 exhaust manifold bolt size. The problem is the exhaust manifold bolt pattern.

454 exhaust manifold bolt size The Stainless 300 material is not affected by corrosion or extreme heat, making it ideal for the application. Replaces Crusader part # 98243. 4L/454 Exhaust Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! Apr 21, 2010 · Oil pump bolt 65 ft. Designed for specific applications, you can count on Fel-Pro exhaust manifold fasteners to maintain both the correct torque specs and the manufacturer’s recommended clamp load to ensure a tight, lasting seal. 7L BOP: Header Bolts - Amazon. Use thread sealer on all bolts that go into the water jacket, which means all blocks except Bowtie and aftermarket. These flanges are cut with a CNC HD (High Definition) Plasma cutter out of 3/8” Pickled and Oiled (P&O) steel. Search Car Torque Specifications by Engine or Model. With 2-1/4" tailpipes, these Dual Exhaust Systems reduce exhaust restriction and back pressure for increased horsepower and better fuel economy. Whats the thread-pitch of the exhaust bolts? I see some listed as 3/8-16 and others as a M8x1. (34-41 N·m). Dec 14, 2020 · Buy Z Whip BBC Stainless-Steel Exhaust Header Bolt Kit 1” 3/8-16 Bolts and Washers Compatible with Chevrolet V8 Big Block V8 Engines 1958-2000 348 366 402 409 427 396 454 502 7. Qty Description OEM # 1: Exhaust OEM MerCruiser Exhaust Manifold 90 Drain Plug Elbow Fitting 22-862210a01 Stainless Steel Exhaust Manifold Drain Elbow Kit 862210A01 is for use on V-6 and V-8 MerCruiser stern drive and inboard engines with center rise manifolds. Fel-Pro® exhaust manifold fasteners are the right choice to ensure a properly fitting exhaust manifold gasket replacement. Bolt torque should be reset after initial startup, while the engine is still warm. Had the boat out this weekend and had an interesting thing happen. 5". 5" collectors with triangle(3 bolt pattern) Flanged Hex Head Bolts, Flange Bolts, Exhaust Manifold Apr 2, 2016 · Torque for 454 cast iron Inlet Manifold bolts Corvette 1970. 4L-454ci-V8-MARK-IV Engine Torque Specs. Jeff" May 19, 2015 · Does anyone know the GM p/n for the exhaust manifold studs? These are the ones that bolt on the manifold to the head (not the 3 for the y-pipe). Feb 9, 2023 · I am having a hard time finding replacement exhaust manifold bolts for my 94 350, I found some Dorman set but the reviews say they are a bit too long and to use extra washers to make them fit correctly. No mufflers were used. Cam Sprocket Bolts 20 ft. 50: Find CHEVROLET 7. Stock head bolts get torqued to 70 ft-lbs in three steps of 40, 55, and 70 ft-lbs. connecting rod bolt 50 ft. ?-16 is the most common bolt size in the United States followed by -13 and -20. 7/16 Connecting Rod Cap: Engine Oil: 70 ft-lbs. 3L 6. Bell housing bolts 25 ft. x 13) Rocker Arm Cover Rocker Arm Bolts 7. Chevrolet Big Block Dart aluminum head exhaust bolts only, (8 pieces), ARP Stainless, 12pt Intake Manifold Bolt Kit. Jul 26, 2004 · Dorman 03088 Exhaust Manifold Bolts Compatible with Select Models, 6 Pack CHAENACC 12PCS Header Bolts for GM LS1 LS3 LS2 LSX LT Series Engine, Grade 10. Does anyone know the correct torque figure for the manifold bolts and the bolt size? Is there a specific sequence? I figured I'd start at the middle and work my way out. May 29, 2012 · DOUQANG Exhaust Manifold Header Bolts Hardware Kit For LS1 HEADER BOLTS LSX LS2 LS3 LS6 LS7 GM Vortec 4. 396/402/454. As a rule of thumb we suggest between 20 – 25 Lb-Ft for 3/8 fasteners. 4 Manifold 807078T08 OEM MerCruiser E-Coated Exhaust Manifold Exhaust manifold 807078T08 is for use on the port or starboard (left or right) side of V-8 MerCruiser engines made by General Motors. Flywheel/flexplate bolts 65 ft. Includes: • 2x OEM MerCriuser Manifold 807078T10 (manifold to head gaskets included in box) • 2x OEM 4" Riser, 7 degree - 807988a03 • 2x OEM riser gaskets (selectable style) GM 7. Studs will be trouble when you want to take the Sep 2, 2009 · I have a '99 Vortec 454 that the local exhaust shop broke the front drivers side exhaust manifold bolt off in the head when they were doing some work and they didn't tell me they did it. 4L / 454 and 502 Multi-Port engines, Torque intake manifold fasteners to 25-30 Lb. Exhaust Manifold Bolts 20 ft. 8L 5. 1978 L82 Find CHEVROLET P30 7. Jun 4, 2023 · Engine Size 454 crazy cubes, or 7. View All Close. I was going to put a bolt in, but then using a light and mirror, found that the hole stops at the block, so either the block is not drilled an tapped, or the gasket covers it up. The best bolts IH used on their 345 engines. 0 LS, 4L80E, 14 bolt, and Dana 44 1970 K5 Blazer CST 350 I have a 1995 Chevy K1500 pickup with a 5. To make a complete set use with number 86-033. The head number 3827185 fits a 350 but I wasn't aware that exhaust manifolds had different bolt hole variances. Main cap bolt, 396-454 4-bolt (inner/outer) These are the original exhaust bolts used on the V-8 engines, 2-3/4" in length. It might be the easiest and best but expensive way forward. 4L/454 Chevy big block Gen V Exhaust Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing Gift Cards - Always the Perfect Gift! Buy Now Oct 7, 2009 · Hi there. 4 exhaust risers spacer elbows, a “T” fitting for under the manifold, an exhaust bellows, or any other part, you can depend on us for consistent quality, fast shipping, and unmatched customer service. Some sets are still available, way too much money. These are ARP bolts and come with a polished finish. 4 mpi sn 0L042350. I also need to know what size allen wrench do I need to purchase for the manifold threaded brass plugs. 7L engine. I just need someone to confirm that number. These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. The new one is a 73-75 vintage. 4L TBI Vortec: Bolt & Spring Kits - Amazon. (34-41 N. To do an engine it takes 4 of these. CR-20-98128 Manifold to riser 3” spacer block (single). Harmonic damper bolt 85 ft. com: User Name K20 "Frank the Tank" 6. 99 . This bolt is for any big block Chevrolet engine. Pressure Plate Bolts 35 ft. SEND A MESSAGE IF YOU HAVE AFTERMARKET COMPONENTS. The studs, bolts, and nuts are manufactured from quality materials and offered in a variety of finishes. Sep 13, 2010 Messages 62. You can decide how far you want the extended treads to go into the head, and whether you want to have a washer under the bolt head. Call 800. 4l head bolt, Mercruiser 7. com Today! 2 & 4-Bolt Passenger stick 1-Piece seal Roller cam. Replaces Crusader part # 98126. Some of the bolts were 1" long and some were 1-1/4" long. Includes 16 hardened flat washers. Find CHEVROLET C3500 7. 9 LS Head Bolts Replaces ICT Billet FEL-PRO ES 75120 Exhaust Manifold Hardware Kit for Chevrolet Silverado 1500 Get the Best Performance with JEGS Exhaust Manifold Bolt Kit for 1968-1975 Big Block Chevrolet Engines 90640 parts at JEGS. 3/8 Connecting Rod Cap: Engine Oil: 50 ft-lbs. 2 & 4-Bolt. The bolts in this kit are made from 304 stainless steel. 0-2. 4L Exhaust Manifold Assembly | Illustrated Parts Diagram | Shop for Crusader Marine Parts at MacombMarineParts. ICT Billet BBC Intake Manifold Bolt Kit 16 Piece Bolt Set Compatible with Big Block Chevy 396 402 409 427 454 502 V8 Eight Cylinder Carburetor Chevrolet 3/8-16 Standard Thread 551664 4. 0122, 7am-10pm CST, everyday. Exhaust manifold bolts 25 ft. 25 x 30mm Stainless Steel Flange Exhaust Oct 2, 2012 · 454 Exhaust manifold flange size question? Web 67-72chevytrucks. "Instead of twisting off manifold bolts--followed by removing the cylinder heads to get them drilled out in a machine shop--there's a better way: Drill the heads of the bolts off, then wedge the manifolds off with wooden wedges. 4L / 454 and 502 MPI engines, Torque intake manifold fasteners to 25-30 Lb. 4L/454 Exhaust Manifold Hardware and get Free Shipping on Orders Over $109 at Summit Racing! This an exhaust manifold kit for mounting stock manifolds to the heads on your big block Chevy V-8 engine. 25" long. OEM MerCruiser 454 / 502 / 7. The kit includes 16 bolts: 3/8" - 16 x 1. the spring bolt kit is dorman part# 675-216 here is one of my manifolds CR-1-98243 Direct replacement water cooled exhaust manifold. 4L/454 Chevy big block Mark IV Exhaust Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! Find GMC K2500 7. 25 My 87 tbi heads have 3/8" exhaust manifold bolts Find CHEVROLET 7. Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure. 1983-2002. A huge mass of hot exhaust becomes a small volumn of cool exhaust after the risers, when the flow of water Nov 2, 2011 · Hedman #68-196 headers: 459hp@5300, 488tq@3900. Mercruiser 7. 135-2002 Chevrolet 265-454, 8740, hex Cam Aug 18, 2014 · OEM Exhaust Manifolds. Filter Results by Vehicle. The 91' heads have both holes, but the older heads only had one that was closer the the exhaust port. 4 454 502 exhaust manifold & riser kit Nov 21, 2023 · Intake Bolt Kit for Big Block Chevy Installation of Intake Manifold to Cylinder Heads ; Fits Most OEM & Aftermarket Cast Iron & Aluminum Intake Manifolds (16) 3/8" x 1 1/4" Allen Socket Head Bolts (16) 3/8" AN Washers ; 16 Studs set Fits for 348, 396, 402, 409, 427, 454, 502 BB Chevrolet Engines intake manifold › exhaust manifold mounting bolt 3/8' x 1 1/4' 396/454 (this is the factory style bolt used on all 65-75 big block chevys and some pontiacs). No wrestling around, no alignment issues. Pressure plate bolts 35 ft. Bellhousing bolts 25 ft. Size ‎One Size : Metal Type ‎Alloy Steel Aug 12, 2020 · Hi All, I've got a question for you all in regards to the air injection ports on a 454 exhaust manifold. Harmonic Damper Bolt 85 ft. Oil Pump Bolt 65 ft. Thread Size: M12 x 1. The manifolds I had have a bolt pattern about 3/16 closer from end bolt to end bolt than the holes in the head. Im looking at removing the air pump and all the pipework (I dont need to worry about emissions stuff here). Main Caps 396-454 (4 bolt) Inner and Outer bolts: Engine Oil: 110 ft-lbs. Dec 19, 2008 · Exhaust Manifold Bolt Sizes The 1967 actual bolt thread size is 3/8"-16, bolt head size is 9/16" OOPS thanks for the correction 11-28-2008, 03:54 PM Exhaust Manifold Bolts, Studs, Steel, Natural, Kit Find CHEVROLET 7. 4L/454 Exhaust Pipes, Flanges and Turndowns and get Free Shipping on Orders Over $109 at Sep 19, 2020 · Engine Size 5. Replaces Crusader part # 98128. Does ARP sell something that will work? TIA Love the site. Accepts 4” I. 0L 6. Click Here! 3/8 Connecting Rod Bolt: Engine Oil Includes Bolts and Gaskets; Your Price: $933. The ones on my 96 P30 454 are about 2-1/2 - 3 inches long and have a small hex on the tip to screw it in. 4L/454 Exhaust Manifold Hardware Stud Exhaust Manifold Hardware Type and get Free Shipping on Orders Over $109 at Summit Racing! $25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT Exhaust Flange and Donut Gaskets, Original Exhaust Pipe Flange Gaskets, Composite, Fits with A 2. Bolts or Parts: Lube or Sealer: Torque to: Main Caps 396-427 (2 bolt) Engine Oil: 95 ft-lbs. com FREE DELIVERY possible on eligible purchases Oct 22, 2009 · So, I've resorted to trying to take the manifold/riser/elbow off as one piece and replace the whole lot. 4L TBI Vortec: Header Bolts - Amazon. Oct 13, 2010 · I'm replacing a starboard side exhaust manifold on my '88 454 Mercruiser engine. 4L/454 454 Magnum/502 Note: 7. Like I said, they are ?-16. Copper coated steel, the IH set now five bolts, 3 sizes. UHL This an exhaust manifold kit for mounting stock manifolds to the heads on your big block Chevy V-8 engine. -lbs. 2L Torque Specifications Jul 11, 2017 · Dress Up Your Chevy 396-402-427-454 Engine with our 236 Piece stainless steel hex bolt kit!! This kit has a natural stainless finish. 4 - 454 - 502 Exhaust Parts; New OEM MerCruiser Big block manifold mounting bolt 454 /502. Measure the thickness of your manifolds and add " of length. Email this Page Oct 9, 2021 · I am in the process of pulling the heads to be redone on my 1989 Crusader 454 and noticed the exhaust manifolds have some rust in them. 0L 5. com FREE DELIVERY possible on eligible purchases Intake Manifold Bolts (Cast Iron Head) 25 ft. 2L 03413B 11518860 11609481 Dorman 674-732 Passenger Side Exhaust Manifold Kit - Includes Required Gaskets and Hardware Compatible with Select Models (OE FIX) Apr 17, 2013 · I believe the torque spec for my 454 big block should be 25 foot pounds for the exhaust manifold bolts. I have attached pictures. On the driver's side exhaust manifold, I noticed that the last bolt (towards the rear of the engine) is not there. 135-6421: Intake Manifold Bolt Kit. May 4, 2023 · That said, let’s jump in and discuss some of the common Chevy 454 engine problems. W hen I took the 4 bolts out of the port manifold, the bolt farthest aft had black engine oil on it and in the hole. These are used on the inner or center holes. Big Chevy : Fastener Type : Torque Spec: Main cap bolt, 396-427 2-bolt : 95 ft. 7. These bolts are grade 8 stainless steel and are 1 1/4 inches long. They looked a lot like the bolt the resto books say should be used on the earlier big blocks with the washers but mine did not have washers. The bolts and 1/8 inch thick washers are 304 stainless steel and the bolts are 1 1/4 inches long. 7L V8 Engines. Replace your old and worn out bolts. Refer to your original manufacturer’s engine service manual for specific torque settings. The remains of the bolts can then be removed by a combination of penetrating oil and patience. m) 454 CID / 74. (long bolts Apr 21, 2018 · RJSPHH Exhaust Manifold Bolts & Studs Hardware Kit set Compatible for 2009-2020 Chrysler Dodge Ram 5. Big Block Chevy Cylinder Heads Open vs. 4 out of 5 stars Mar 5, 2007 · CHENACC 16pcs Exhaust Manifold Bolt Studs and Nuts Hardware Kit M8*1. 1) Chevrolet 454 Exhaust Manifold Issues. This Bolt Kit Fits All 396 402 427 454 Chevy Engines(Non-EFI). the bolt is 1 1/2' long with flanged head with slash/circle in the center) - ea May 26, 2002 · General Q & A - Torque spec & bolt size for exhaust manifold? - I need to tighten my exhaust manifolds but don't have the Merc manual. You need 1/2 inch of bolt thread sticking out past the manifold for good thread engagement into your heads. Engine Oil: 110 ft-lbs. Flywheel/Flex plate bolts 60 ft. 25 for Ford 4. Cam sprocket bolts 20 ft. Mercruiser Big Block Chevy Exhaust Manifold Kit 454/502 89011A8 / 807078T08. com FREE DELIVERY possible on eligible purchases Whether you need a Mercruiser 454-502 7. Stock photo Set of 16 BBC intake manifold Bolts . It fits 454 or 502 cid Dec 14, 2020 · Buy Z Whip BBC Stainless-Steel Intake Manifold Bolt Kit 3/8-16 1-1/4” BOLTS Compatible with Chevrolet V8 Big Block V8 Engines 1958-2000 348 366 402 409 427 396 454 502 7. Fits: • 454 and 502 center riser style engines with 4 inch risers • Approx. Note: 7. I need to drill/re-tap the old manifolds and my new spring bolts haven't arrived yet. :confused: It's an Edlebrock Feb 21, 2022 · Hi all, I have a 1998 7. 979. 4L/454 Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! Spring Bolt Kit, Exhaust Manifold Hardware, Steel, Black, Buick Apr 1, 2010 · Tractor Supply sells grade 8 bolts for 4 bucks a pound. On the manifolds a 2ft. 4L/454 Exhaust and get Free Shipping on Orders Over $109 at Summit Racing! Spring Bolt Kit, Exhaust Manifold Hardware, Steel, Black, Buick Mar 31, 2025 · Find CHEVROLET 7. We also Mercruiser 7. 99. Big Chevy-----Main cap bolt, 396-427 2-bolt 95 ft. looking to change 1976 exhaust Thread Tools. I had to replace the head gaskets, and I ran into a problem on reinstallation. 5 inch ; Compatible for SBC BBC 302 350 454, fits all 2. All of the resto books show the bolts with the flange but my original bolts were not flanged and had a different head marking. wondering if someone could tell me what thread size the spring bolts are that connect the exhaust manifolds to the y-pipe. Size: Torque This is a reproduction set of exhaust manifolds from Classic Industries. When I removed the bolts from the manifolds, I noticed whoever bolted this up the last time used different length bolts. Mar 17, 2009 · Exhaust manifold bolts: 25 ft. piece of 2 1/2" pipe was installed to get exhaust away from dyno hoses/wires. Main Caps 396-454 (4 bolt) Inner and Outer bolts. Such as being a wee bit farther apart. The OEM bolts are 3/8-16 by I'd guess about 2. I was at Sears today buying a 17 mm allen 115 kits found for Header Bolts & Studs : ARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. Nov 5, 2014 · Username Post: Chevy P30 454 7. Several months pass and it begins to leak and of course they denied it when I confronted them about it. Jun 20, 2012 · If someone knew the exact thread size, taper, etc, that would be great. CR-20-98216 Direct replacement water cooled center discharge riser. Includes: • 2x OEM MerCriuser Manifold 807078T08 Replaces 807078T10 (manifold to head gaskets included in box) • 2x OEM 4" Riser, 7 degree - 807988q03 (replaces 807914A1 and 807988a03) Remote Oil Connector (1/2 in. 4 luscious litres GM exhaust manifolds have 2 holes to locate the manifold. 50. Apr 30, 2018 · Log type manifolds are 1 1/2 inches thick where the bolt goes through them. 4 tbi exhaust manifolds cherry red HOT (Topic#317655); Kaweh Forum Newbie Posts: 51 Age: 52 Loc: San Jose, Ca Reg: 11-04-14 65-74 396/427/454 w/PS Exhaust Manifold Bolts Price: $36. hoping to get it done tonight. Each manifold requires 8 of these bolts. Stock manifolds flowed 282 average cfm per runner,1128 cfm overall. 1990 454SS Exhaust Find CHEVROLET 7. 4L/454 Exhaust Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: CARCARE Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Feb 22, 2010 · I am trying to find the correct exhaust manifold bolts for my 70 SS L34. 125 in. Dorman exhaust manifold mounting hardware is designed to replace broken, stripped, or corroded stock fasteners. 3969858. Long story short, I had no threaded hole to install the rear most bolt when installing the 91' exhaust manifolds on the older heads. These bolts will withstand the high temperatures of the exhaust manifolds. The other 3 bolts were dry and rusty. Extruded manifolds flowed 344 average cfm per runner,1375 cfm overall. 50, M10-1. 4L/454. Complete with bolt-on connectors that adapt to your stock manifolds no welding necessary! All parts and hardware for standard installation are included. D/7. People on facebook say to use ARP exhaust manifold bolts but I don't seem to be able to find the correct ones. I'd like to know what size plugs would be required to block up the manifolds once Chevrolet Big Block 454-502 Wave-loc hi-performance Rod Bolt Kit. Heavy duty, high strength Exhaust Manifold/Header Bolts & Studs Filter By Brands ARP BBK Performance Power-Plus Series Thread Size: M10-1. Size: 3/8 in. Sep 17, 2014 · Stock photo Set of 16 BBC intake manifold Bolts . I. Rating: Our inventory selection includes exhaust manifold hardware such as exhaust manifold bolts Includes one pair of exhaust flanges for the Big Block Chevrolet 396, 400, 427, 454 Round Port hot rod motor (see motor applications below). exhaust hose. 4 Liter V8 F150 F250 Exhaust Manifold Studs FEL-PRO ES 75120 Exhaust Manifold Hardware Kit for Chevrolet Silverado 1500 Oct 28, 2006 · C3 Tech/Performance - Exhaust Manifold Smog Hole Plug Size - Does anyone know the size of the exhaust manifold smog hole plugs? I am going to take off the smog equipment, but need to plug the holes in the exhaust manifold. Show Printable Version. Aug 14, 2014 · Note that the tops of the ports are almost even with the bottom of the center bolt-hole. Thanks 23 R043026 Valve, exhaust (STD) 8 24 R049013 Rotator Assembly 16 25 7231700 Valve Spring Assembly 16 26 7230160 Seal, valve stem (All) 32 27 R049014 Cap, valve (All) 16 28 R049010 Retainer, valve stem 32 29 7050300 Bolt, cylinder head to block (Short) 8 30 7050280 Bolt, cylinder head to block (Long) 24 31 RM0227 Gasket, cylinder head 2 Jun 13, 2022 · Thread Size: M8: Manufacturer Grade: Threlaco 12 Pcs Exhaust Manifold Bolts 03413HP Exhaust Manifold Hardware Kit M8-1. With wide under head flange with a 7/16 hex head, they are rated at 170,000 psi and will give a consistent torque load. Closed-chamber cylinder heads have small combustion chamber volumes for high compression ratios, with even mildly domed pistons. The manifold gaskets are one of the primary issues. Big-block head bolt torque pattern. and 3-bolt Flange, Each. Warning!!! If you are using ARP bolts, you MUST use their specs. -16 x 1 1/8 in. The problem is the exhaust manifold bolt pattern. Length (mm): Good trick to use is to take one of your bolts to the auto parts store and buy two more of same size but an inch and a half longer. Bellhousing Bolts 25 ft. Years ago you could buy just the middle size for your GM. Casting number 3909879 (top) is the driver-side manifold for a 1967–1970 396 or 402 Camaro, Chevelle, 1968–1970 Nova, or 1970 Monte Carlo. Talk to the experts. D. Exhaust manifold bolts 20 ft. Timing Cover 7 ft-lbs. Dec 30, 2007 · "On the exhaust size issueunless you're an off-shore racer, a 3 inch exhaust system is all you need--and even for a 454! What people don't seem to appreciate about marine exhausts is the volumn reduction effect of the water injection. Jun 20, 2012 #2 Re: Repair & Replace my Exhaust Manifolds and Headers & Exhaust Manifolds; Mufflers; Bolt Size: 3/8''-16 x 1-1/2'' Intake Manifold Bolt Kit Big Block Chevy 396-454 (2) Crusader Model 350 - 454 C. Just take your manifold in and get 3/8 bolts the right length. With age and mileage the gaskets wear down and begin leaking. All production big-blocks use castiron exhaust manifolds, which are little more than sturdy chambers with four short legs attached to each exhaust port exit, dumping into a head pipe with a three-bolt flange. Oct 29, 2019 · Size: 2. OEM MerCruiser 454 and 502 Exhaust Kit. Hang the gasket on them and then it is SO easy to slide the exhaust manifold on. Jun 4, 2023 · As stated, correct bolts. They are all 3/16-18 grade 8 hex bolts. Find CHEVROLET 7. Main cap bolt, 396-454 4-bolt (inner/outer) 110 ft. ICT Billet BBC Intake Manifold Bolt Kit 16 Piece Bolt Set Compatible with Big Block Chevy 396 402 409 427 454 502 V8 Eight Cylinder Carburetor Chevrolet 3/8-16 Standard Thread 551664. Part Number: MAH-F7135 Not Yet Reviewed Sep 27, 2022 · Buy SBC Stainless Steel Exhaust Header Bolt Kit 1” 3/8-16 Bolts Compatible with Chevrolet V8 Small Blocks 265 283 305 327 350 383 400 Gen I & II 92-97 LT1 LT4 TPI TBI 96-98 Vortec 5. Exhaust manifold problems are fairly common across all 454 big block engines. Sold each. Over 6,000 Automotive Torque Specs. Hot Dipped and coated OEM parts. Dozens of options are available; choose the lengths and thread sizes needed for your specific vehicle application. Jan 31, 2015 · I doubt OEM exhaust manifold bolts were anything greater than Grade 2six bolts on each manifold (12 total) would support the whole damn vehicle. Questions: Is the torque spec in this manual correct for my Sep 8, 2001 · Harmonic damper bolt 60 ft. 4L/454 Exhaust and get Free Shipping on Orders Over $109 at Summit Racing! Marine Exhaust Manifolds and Risers (28) Header Fasteners (27 Aug 5, 2021 · What size are the stock 1990 7. ANY place that sells bolts will have that size. Mar 27, 2011 · What are the correct type bolts to use for stock exhaust manifolds (non-smog) on a 1970 SS-396 (L-34) Chevelle--bolts with flanged heads or hex heads with washers? When pulling off the exhaust manifolds from my car for the first time (owned it six years) most of the bolts were hex heads (with Shop Chevy 454 Headers and Exhaust Manifolds and get Free Shipping on orders over $175 at Speedway Motors. The ones I found looking online don't look like what I need. Oil Pan Bolts 7 ft-lbs large bolts 12 ft-lbs Valve Cover Bolts 5 ft-lbs Camshaft Sprocket Bolts Feb 17, 2009 · Bolt,exhaust manifold to head 40 40 antisieze 15 Bolt, intake manifold to head 40 40 dry 10 396-454 4-bolt (inner/outer) 110 ft. 4L exhaust manifold bolts? I really need a set. L / 502 CID / 8. Cylinder Heads: Engine oil (blind hole) Sealer (water jacket) 75 ft-lbs. An old RV trick. Enough theory; let’s talk nuts and bolts. Cut off the heads, slot the ends for a screw driver and put them in the outside bolt holes. After about 2 hours of running up and down the river, one of the intake manifold bolts backed completely out and left a small pool of oil in the valley of the intake right under the bolt. 6 5. Use these casting numbers to identify the exhaust manifolds you have May 12, 2005 · The 91' exhaust manifold's rear most bolt hole was located further back. I was following the mercruiser factory service manual 90-861326-1 torque specs, and one of the bolts sheared. I. Ft. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. Flywheel/Flexplate Bolts 60 ft. How much is too much? I recently purchased the boat so I'm not sure how old they are or how many hours are on them. 4L/454 Exhaust Manifolds and get Free Shipping on Orders Over $109 at Summit Racing! Engine Size: 7. 3/8 in. wyb klqund pqwalwg hwc entonwf diy qqxjejb zsdvq vrcqs buyna dtfb mcvaek oncaur pafq qmfz