
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 …
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.
Pontiac 428 build | Page 8 | Pontiac GTO Forum
Jul 5, 2019 · In general, most of our street Pontiac engines regardless of size will run stronger with a 112° or larger LSA than with something like Comp's cookie cutter 110° LSA off-the-shelf …
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 …
Setting initial timing - Pontiac GTO Forum
May 12, 2012 · Need input on setting the timing. 400 with stock cam and HEI. How many rpm's? The vacuum advance disconnected, how many degrees should I set it? Can't find a good clear …
Idle Rpm - Pontiac GTO Forum
Jul 1, 2022 · I’m running a 462, with a moderate cam (236/242 at .050” 12 deg LSA) and th400. I set my total timing to 36 which results in my base at about 13 or 14 deg - my mech advance is …
067 or 068 cam on stock Gto? - Pontiac GTO Forum
Jun 20, 2018 · Didn't know about the specific Pontiac lifters. I got mine from now defunct Indian Adventures. The "068" cam is on a 116 lobe separation angle (LSA). I run the Summit 2801 …
What Cam should I use? | Pontiac GTO Forum
Aug 19, 2013 · The key is more about Lobe Separation Angle (LSA) and Lobe Centerline (LC) with LS being your biggest concern. LSA determines where in the RPM range maximum …
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 …
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 …