Aug 31, 2006 · Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) - lifter bore spacing - What is the lifter bore spacing for the 460. I am running ideas through my mind and thinking of installing roller lifters.

Nov 1, 2011 · Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - Lifter Size and Bore - I'm replacing the hyd roller lifters in my 302 and have noticed that I can get them in .874 diameter and .875 diameter.

May 3, 2024 · Chevrolet, GMC, & Cadillac may have built vehicles powered by 6.2L V8 engines with a big problem. The solution? Replace the entire engine. In April, General Motors Released “Customer Satisfaction Program N232413430 – “Oversized Lifter Bores”.

Nov 18, 2023 · Ford Inline Six, 200, 250, 4.9L / 300 - Lifters stuck in bore - I am doing a cam swap in my 1983 300, I can't get the lifters out of the top of the bore. I was curious about how far they would go down if I just pushed them all the way through the bore.

Mar 11, 2020 · I have been doing a lot of research on the repair and have been looking at what to do in the worst case scenarios. One of those scenarios was if my bad lifter doesn’t come out of it’s bore due to the bottom of it being flared and having to take it out through the cam bore.

Apr 20, 2022 · You install the tool from the camshaft side of the lifter bores and pull it towards the deck face. It cuts a .010 groove in the bore but doing it so it sprays oil at the lobe as it comes up to the lifter.

Feb 24, 2025 · Your GMC truck with a 6.2L engine might be making weird ticking sounds or shaking. You’re not alone – many owners face these issues. GM has identified that some 6.2L V8 L87 engines were manufactured with oversized lifter bores, leading to potential failures. These problems can show up even in newer models with low mileage. Some trucks have shown issues with lifters failing at just 740 ...

Apr 30, 2022 · I'm really just trying to appease my own curiosity regarding oil supply to the rollers and cam lobes. I can't seem to find whether the lifter allows oil *through* them, or it's a dead end at the bottom, nor whether oil drips or sprays out of the bottom of the lifter bores.

Aug 17, 2010 · Hi all, I have a chevy 327 in my truck, and I recently pulled my intake off to change the gaskets. As I was adjusting my rockers, I noticed tht the top edge of one lifter was not lining up with the top edge of the bore cast into the block. I thought as …

Feb 2, 2010 · Ford Inline Six, 200, 250, 4.9L / 300 - lifter bore seperation - I'm starting the phone-calling process trying to source out a roller cam, and i'm going to need to find some roller lifters to go with. does anyone know what the lifter bore seperation is? my block is still sitting in another state, so measuring is a...