Originally Posted by mrbigtrucks
does the valve lash of a cam effect the performance of it
i foud a cheaper cam with the specs as as the comp cam i was looking at but the lash on it is .026 intake .028 exhaust and the comp cam is .20 on the intake and .022 on the exhaust
what difference will this make? if any?
thanks -logan
Yes the lash does make a difference, the tight lash will normally take away some of the low end performance, the tighter lash fools the motor into thinking the cam is bigger. Usually the lash will grow about 10 to 15thousandths. I never set lash out, only check hot and the if any are off , I change. Iam not the smartest in the world but have been drag racing and building motors both big and small block 500 inch SB and 815 BB, I am 67 and have been doing this for 48 years. So lash does matter, go by the cam card, it is a starting point and then play around with the valves lash, tighter about 5 thousandth and see if the motor slows down then loosen and see what happens, what ever change you make should show up in your 60ft times first. Hope this helps