<VV> Early Engine

[Bryan Blackwell]

Let's see, the displacement of the late engine is about 13% bigger 
(145/164 = 1.13) than the early one, and milling the heads gives about 
a 1 point CR increase, or 12% (9/8 = 1.12), so your engine will end up 
about where it started but with better squish.  I'd measure anyway, but 
it sounds like you're in the ballpark.  Given the ports are the same 
size, with the smaller engine the 260 will be fairly free revving, but 
maybe not a real high torque setup.  I'd compare the actual specs 
before picking one of the cams, although from everything I've heard you 
want to stay away from the 102 cam with a PG.  Let us know how it turns 
out.
--
Bryan Blackwell bryan at skiblack.com
http://autoxer.skiblack.com/
   Corvairs: '61 Lakewood, '64 Greenbrier, '65 Corsa, '66 Corsa
   '69 Road Runner, '97 Ford F-150, '99 Neon R/T
"Why do something if you're not going to obsess about it?"

On Jul 26, 2005, at 2:22 PM, Geoffrey A Johnson wrote:

> I have on hand a ISKY 260 cam, early 80 cam, early 102 cam, and a 891 
> cam. I am leaning towards the isky cam and the milled 95 heads.  I am 
> thinking that those heads with a early crank should give a low CR, 
> that is brought back up by the gasket step being gone.  This should 
> give a decent CR along with a good quench.  Can anyone tell me offhand 
> what the CR would be then? So I can get a ballpark estimate before I 
> actually measure and calculate?