Cam specs help
Cam specs help Engine is a gen2 lt1 that’s been bored and stroked to 396ci, running AFR210’s. The current cam is CC 236/242 with .588”/.577” on a 113 lsa(hyd-roller). I’ve been wanting to upgrade to a solid roller for awhile and I recently acquired an old unused Racer Brown solid roller with specs of 257/266, .400” lift, 106lsa @ 102 int centerline, with a .022” recommenced hot lash. The car is only a fun strip toy, but I’d like to know if swapping to this solid roller will hurt hp or add hp, my concern is the lower lift numbers. Can any of the engine/cam gurus chime in please? Thx in adv.
That cam looks like it was intended for some class of racing that has camshaft lift limitations. It would not take advantage of your AFR heads and overall combo and would be a step in the wrong direction for you.
This is what I was concerned about when looking at the lift numbers.
Engine is a gen2 lt1 that’s been bored and stroked to 396ci, running AFR210’s. The current cam is CC 236/242 with .588”/.577” on a 113 lsa(hyd-roller). I’ve been wanting to upgrade to a solid roller for awhile and I recently acquired an old unused Racer Brown solid roller with specs of 257/266, .400” lift, 106lsa @ 102 int centerline, with a .022” recommenced hot lash. The car is only a fun strip toy, but I’d like to know if swapping to this solid roller will hurt hp or add hp, my concern is the lower lift numbers. Can any of the engine/cam gurus chime in please? Thx in adv.
That’s good news but looked at the specs again and I dunno. It looks like your current cam has +13 degrees of overlap and this solid roller has +49.5 degrees of overlap which is really excessive. Tuning it will be a bitch let alone the drivability of the car will go out completely out the window. I could see reversion becoming an issue. Positive overlap makes power but the law of diminishing returns kicks in and you get to a point where the negatives outweigh the positives. This is a pure race car kind of grind and the entire setup will need to be built around it to take advantage of it (compression, stall size, gearing, cylinder head flow, header/exhaust sizing, bottom end/ignition components allowing enough RPM, etc.). I wouldn’t run it personally. This isn’t a remove one cam and replace it with another kind of deal given the extreme differences. If you want to go solid and perk up your current setup I’d get something custom and sell what you have. Just my .02 but if you’re cool with all that just ignore me lol.
Last edited by StealthFormula; Nov 26, 2018 at 04:30 PM.
