Which grind is it? SB1, SB2, SB3 or SB4. 1 is stock, 2 is a mild street
grind & the one in my car, 3 is a rally grind and 4 is a racing grind.
Basically these grinds increase the usable rpm range with a concurrent
increase in torque & HP. The SB3 is as high as you'll want to go for a
street application. Even my SB2 has a fairly lumpy idle. But it starts
to poop out around 5000rpm. A hotter grind will take you higher. The
stock cam is even good to 5500+ but the advantage of the SB2 is that the
torque peak range is reached quicker. This is the pirmary advantage of a
hotter cam, faster throttle response.
An Isky cam will drop into your 1725 and you can use stock lifters.
However, DO NOT reuse old lifters on a new cam. I also do not recommend
regrinding them (had a lifter failure in my fresh motor, destroyed the cam
and very nearly the motor). Buy new lifters.
CNA
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