[Dan Mc Intyre]

Hi Doug,

I guess I should have phrased the part about cams better. I understood from the research I've done here that there is a difference between number of bearings and the need to regrind the cam profile.

However, if I gain 25 HP from the mods I propose gets me to about 190. That's in the ball park. I don't have smog Nazi's to contend with here so that's not an issue for me here. That's one benefit to living in the wilds of WI.

From what I read here, the use of a 964 profile will not really increase HP, but rather moves it higher in the rev range. My car seems to run out of breath over 5500 and I'd like it to rev better. So the cam change seems like a good idea. Do you know if a 964 cam profile will totally kill performance from 3000 to 5000 rpm?

I'm also pretty interested in the R/P change from my 8:31 to 7:31. I'm approaching this little project as a system. I've read that a properly set up tranny feels like a 50 HP gain. So...if a guy goes to the 7:31 gears, is there still a benefit to changing tranny gears and making it a close ratio set up? What is first gear like with 7:31's , does it turn into a granny gear? Fuel mileage is not a big issue here, either. I just want it to scoot up to about 100 mph. My idea is to leave 5th gear stock for interstate use. Also, with the HP increase and gearing change, how important would it be to swap out my open differential? This car will probably never see the track, but is driven somewhat aggressively on the street. How hard is it to find a used 7:31 tranny? Are they commonly available?

Thanks for the info, Doug.

Dan