carb vs efi camshaft

[chartreusehj]

That's a really vague statement… are you trying to say its irrelevant?

what im saying is that selecting a cam based on a byproduct of valve timing isnt the way to go, get the lobes in the right place for the combo and let the LSA fall where it may.

[Motherfucker Jones]

It's one of the things that determines valve timing events… I always look at when selecting a cam. It can have a major effect on how a cam performs. The same lobes on a 106 LSA compared to 112 is going to have noticible effect on rpm range, torque and idle quality. Along with durations it's a really quick indicator of what characteristics a cam is going to have

[Motherfucker Jones]

Maybe they way I do it is just the American 'cam catalogue' way of choosing a cam. Idunno…

[Motherfucker Jones]

I don't.

:rotflol:

Leave us backward arse, single in block cam knuckle draggers alone Bill :D

[mizone]

i hope none of you guys are selecting a cam based on LSA...

Nope. Car came with an angry cam (stroked 351W with stock heads, real ugly combo), it has lots of over lap etc and has very little vacuum (5inches) at idle. But I likes the sound of it and want to make it work....

[Motherfucker Jones]

Nope. Car came with an angry cam (stroked 351W with stock heads, real ugly combo), it has lots of over lap etc and has very little vacuum (5inches) at idle. But I likes the sound of it and want to make it work....

What carby and manifold? You might need some other bits to make it happen

[Dogsballs]

Really you're best bet is to chose something proven. You're not at the level where you're chasing one or two horsepower. Even that Texas speed cam that you were talking about being compromised design, if it's running 140+ mph in a car it's working and will probably do what you want at least as a start point. If you develop a good benchmark with something like that you can experiment later and see what you lose or gain

funny you say that. guy from texas speed got back to me, he suggested that ms4 cam but ground on 109 or 110 lsa (239/242 .649"/.609") which they'd do for free.