Wrong Cams: now what do I do?

[shoooo32]

So I got the heads and cam tower torqued down and test the cam fitment. Tight? Nope. Loose like wizards sleeve. It seems the 964 regrind SC cams I bought last year off eBay were originally 2.7 cams. Shame on me for only giving them a quick visual and not putting a mic to them.

So what cam should I buy (preferably something that’s readily available)? It’s an early SC 3.2ss running CIS with 9.5:1 JE Pistons. I liked the idea of 964 cams but should I go 993ss? Any other suggestions? I’d ditch the CIS but it’s sorted and runs too good to replace.

[john walker's workshop]

Webcam 20/21 is a good one. Works well w/CIS.

[Cory M]

I've got the same engine specs as you with 964 cams. They really open up above 4k and still feel good at the lower rpms.

[GaryR]

Why not talk to John Dougherty and see what he recommends?

[Jameel]

John Dougherty turned my SC cams into 964s when I did mine last year. I'm also running JE 9.5:1 but kept the stock jugs. I'm very happy with my engine. Fairly flat torque curve, no "boost" after a certain rpm, which is exactly what I wanted for this car. Just torque whenever you want it above 3k or so. Very smooth down low too.

[Cory M]

+1 for John Dougherty

[shoooo32]

I spoke to John at DC then called Web Cams. Looks like John's 964 grind and Web's 20/21 are very similar. Web had the shorter lead time so I'm headed in that direction. Thanks everyone for the advice!

[hank911]

Had those on my small port 3.0. Fun little motor combined with SSis
Selling those cams? I now have a 2.7

[Sboxin]

Agree with John W - - we have 20/21 in a 3.8L race engine and provides good torque curve - what we were looking for to stay in class and have better race starts.

Regards,

[shoooo32]

Hank- PM sent

[Bob Kontak]

I have two 964 cams on the shelf I bought from Engine Builders Supply years ago for my 81.

Just saying. I don't need them.

[shoooo32]

Bob- PM sent