Is This Cam Streetable?
AJ, his car is a manual 4spd. He also never mentioned his tire size.
Oops I missed the a833 part.I assumed 27s for ease and constancy of calculations, and because that is what 295/50-15s are and he's gonna need 'em.
Ok but most of what I said still applies.
Except with an M/T there are many,many, times when the engine is stuck in the sub TC stall zone, and you don't have any help from the missing TC. See with a loose TC that buzzes the engine up to 3000 or 3500, before much of anything happens, your engine can be way off tune down there, and it hardly affects anything.But with an M/T the tune DOES have to be sharp down there, cuz on the street you are gonna spend an awful lot of time in that zone.
-This proposed cam is rated 2600 up right? The cam grinder is telling you allready that this cam has problems below 2600.Well with 3.55s and 27s, this makes 22mph. Think about that.
Do you really want to rev it up and slip it out, every single time you take off?
What if traffic slows to some sub-22 mph, and that big cam goes blubbery?
Now let's say you are just accelerating to a 35 mph cruising speed. Well, that would be 2970rpm in 2nd, which is a little buzy, so you drop it into 3rd/2166 which puts you back in the no-go zone for that cam.
But let's say you are heading out on the hi-way, so you take 2nd out to 3200 and shift(38mph) into 3rd@2351,(oh-boy, in the no-go zone again), but you manage to get through that and finally at 65 you drop it into direct @ 2873 and you are good to go. For a while at least.
-I call it the no-go zone, not because you can't go there, but because the cam is likely operating in reversion there, and the Dcr is falling rapidly, and the engine is just operating way out of it's comfort zone, and unless you are a real sharp tuner, she's not gonna give you any giggles, in that zone, so you might as well not go there.
-The point is this;If you have a stick-car,3.55s, and you drive like I do(normally), there had better be some punch from idle to 3000.Street-Tuning a cam that is operating in reversion,With the Dcr jumping up and down; is a PITA.
