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  1. 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 cams. …

  2. 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 …

  3. Idle Rpm - Pontiac GTO Forum

    Jul 2, 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 about 22-24 …

  4. Cam Suggestions | Pontiac GTO Forum

    Mar 25, 2025 · Things get a little more confusing on the nature of the cams since the RAIII has a very wide LSA of 115.5 which tends to mellow the slightly larger cam. On the other hand, the Crower is a …

  5. Pontiac 428 build | Page 6 | Pontiac GTO Forum

    Nov 12, 2025 · There is a small cluster of cams in the 240° range with Kaufman having the 242/248 on a 112 LSA; Ken Crocie's custom 242-250 on a 112 LSA, and SD Performance Road Paver at 246/252 …

  6. Tach and TPS wires at ECM? - Pontiac GTO Forum

    Dec 14, 2005 · I just installed my NOS system today and am using a FJO Racing progressive controler. I need to fet a tach signal and tap into the TPS for its signal. I'm a neat freak so I wanted to tap the …

  7. '05 GTO cam install & selection question | Pontiac GTO Forum

    Dec 14, 2005 · The LSA isn't the only spec that you have to look at to tell how choppy/lopey a cam is. The longer the valves are held open (overlap), the more lopey the cam should be. Up to the point …

  8. Stroker Owners Report - Pontiac GTO Forum

    Jul 10, 2022 · I though it would be a good thing to start a thread where owners of stroked Pontiac engines could share their builds. I will be picking out the parts to build a stroked 400 block and would …

  9. Reference: Camshafts - GTO Factory Specs | Page 2 | Pontiac GTO Forum

    Oct 9, 2020 · Wider LSA's also run smoother, pull more engine vacuum for power brakes, and have a broader power curve - and why Pontiac used these types. So in my opinion, I think your best cam …

  10. 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 …