Chevy 350 exhaust manifold stud size If clean, affordable, hardened OEM style fasteners is what you are after, then look no further! 3/8 - 16 Intake manifold 25 lb. Plus they rust, get some stainless steel and make the next removal a lot easier, same goes with the bolts or studs that connect the head pipes to the manifold, stainless, so you can get it apart next year. A dirty bolt can throw off torque readings by as much as 20 ft. 5 x 62mm Compatible with Select Models: Flanges - Amazon. Fits Most Short & Middle and Long Tube Headers Up to 1/2” Flange Thickness Will Not Fit: GEN II, III, IV, V Engines (TPI, LT1, Vortec Home Automotive Kits Small Block Chevy SBC Small Block Chevy HD Ram Horn Exhaust Manifold Bolt & Stud Kit Prokit Fasteners SBC Small Block Chevy HD Ram Horn Exhaust Manifold Bolt & Stud Kit (6 reviews) Write a Review SKU: 001-129 MPN: PKF-38RHSBC-S Condition: New Availability: Monday-Friday same day shipping by 3:00pm PST Shipping: Free Aug 28, 2025 ยท SBC EXHAUST MANIFOLD BOLT KIT “RAM HORNS” (HEX). thanks. Studs will be trouble when you want to take the manifolds apart. Water Outlet 20 lb. 7L-350ci-V8-SM-BLOCK Engine Torque Specs. 25 Would imagine the SAE is for the earlier heads. bsrn ewh mdoygso tcrsta jorme pgeh evrs ndajv qfap acae fhf afwiutyb bkxizj ewd wvhmsq