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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 …

  2. Cam Basics - Pontiac GTO Forum

    Sep 13, 2024 · 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 …

  3. Reference: Camshafts - GTO Factory Specs | Page 2 | Pontiac GTO …

    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 …

  4. Compression Test - Pontiac GTO Forum

    May 18, 2021 · The 110 LSA cams work great with low compression engines like 7.5-8-5 or so as this is where you want to build more cylinder pressures to enhance the low piston/engine …

  5. What Cam should I use? | Pontiac GTO Forum

    Aug 19, 2013 · LSA determines where in the RPM range maximum torque is developed in that a tighter LSA of 106-110 degrees will build torque sooner in the lower RPM range AND give you …

  6. 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 …

  7. Cam Suggestions | Pontiac GTO Forum

    Mar 26, 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 …

  8. 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 …

  9. 455 Cam suggestions - Pontiac GTO Forum

    Jul 4, 2020 · My 1967 GTO motor is a four bolt main 1972 455 block with #16 Heads...1966 Tri-Power, Nodular Iron Pontiac Crank,1962/3 Super Duty Forged Rods, TRW forged...

  10. 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 …