
Roller Cam or Flat Tappet in a 400 - Pontiac GTO Forum
Jan 16, 2015 · But, here is what I see as an advantage and what I too am doing in my cam choice with my 455CI 9 to 1 compression engine, 112 LSA, 284/288 duration. Got a solid cam that will give me a …
LS swap questions - Pontiac GTO Forum
Dec 14, 2021 · I've been mulling over engine choices and ideas for my 66 GTO project car for awhile, and I've checked the average prices on a Pontiac and BBC strokers, but haven't considered an LS …
Lifter Failure :( Need new Cam...Recommendations? - Pontiac GTO Forum
Mar 14, 2024 · If you are willing to swap out your converter then a 60243 with a 228/235 duration also on a 112 LSA would be more rowdy. I wouldn't step all the way up to the Crower 60919 RAIV clone …
73 455 Cam choice - Pontiac GTO Forum
Jan 29, 2020 · Also a narrow LSA makes more power, but at a narrower RPM range , where as the same grind with a wider LSA (higher number) makes power across a wider rpm range. My ( 389) 400 …
Cam Basics - Pontiac GTO Forum
Aug 31, 2011 · LSA's of 110 to 114 are usually best for engines that will see street dutyas well as the occasional foray at the track. A wider lsa improves idle quality by creating more intake manifold …
Cam Recommendation from Butler | Pontiac GTO Forum
Aug 4, 2023 · Solid roller cam from Bullet (from their recommendation based on what I was looking for) - 110 LSA, 251/257 degrees at 0.050, 0.620 net valve lift WITH 1.5:1 rockers.
Aluminum Head Compression Estimate | Pontiac GTO Forum
Nov 15, 2023 · A tighter LSA such as the 108° is more prone to detonation Not sure why the 66cc head purchase since the 74cc Kaufman heads would give some additional safety. I doubt you want to …
Camshafts - Pontiac GTO Forum
Oct 4, 2020 · I previously had a solid roller in mine that was 236/242 @ 0.050 on a 110 LSA and made .600 lift at the valves with 1.65's, and it wasn't all that nasty. Being a roller, it didn't have as much …
Degreeing a Cam - the process - Pontiac GTO Forum
Nov 15, 2021 · That is, if the intake centerline is at 106, then the exhaust centerline will ALSO be at 106. (And the LSA itself will be 106 cam degrees). When someone says a cam has X amount of degrees …
Exaust backfiring - Pontiac GTO Forum
Apr 4, 2018 · The 110 LSA cams are best used for engines with compression below 9 -to-1. I am using a 112LSA cam on my 455 build with just over 9-to-1 compression. Is this Comp Cam's XE274? …