3.0 engine mod question

[delaneyd]

If I took at stone stock 3.0 ( in an 83SC ) with CIS and added SSI's and a Monty 2 in 1 out muffler what kind of torque and hp increase should I expect? How about if I added PMO's--any power increase there without intake port mods ?

What is the real bottleneck in the system--CIS, factory exhaust manifolds, 83 model intake ports , stock cams ???

Like to hear from you who have made changes and what was the best combination without changing pistons & cylinders. I also may go to a light flywheel for increased throttle response. Just tell me the real scoop--what works and what is a waste of $$$.

Thanks !!!

Don

[iamchappy]

Hands down best bang for the buck,

911SC Turbo

[oneblueyedog]

Went with a Elgin cheater camset and euro pre muffler. Timed for the high end revs and boattailed the webs. Sachs sport clutch and pressure plate.
Stock P&C (new).
Racing springs and Raceware rod bolts installed for future racing and tuning.

I'd say play with cams and go for a T-bitz without going too radical with the stock engine.

[A Quiet Boom]

Here's what I got with backdated exhaust and rebuilt Zenith's with 36mm venturis and drilled jets. As you'll note in the thread there should be more power to be had now that I've got my new fuel pump installed.

http://forums.pelicanparts.com/porsche-911-technical-forum/291307-dynojet-fun.html#post2684733

[Wayne 962]

S cams, JE high compression pistons, Weber or PMO carbs, SSIs with Dansk muffler...

-Wayne

[delaneyd]

Thanks Wayne !!!
Just 2 questions--are the S cams enough to make it "fun" or should I go GE20 or 40? I have heard that 964 cams are good too. How would the above fall in order of mild to wild?

Thank you for your time and advice !!!

[Wayne 962]

964 = only good for CIS - they are a relatively weak cam
S cams or Mod S cams = use with carbs

You won't regret it...

I've got whole chapters on this stuff in the Engine Rebuild Book...

-Wayne

[MobileWrks]

Thats what i was going to do when i get my 75 roller home....OHH well...
Yes delaneyd, that set up will get a smile put on your face... A perfect todo on a 3.0L. I got my case split ready for all my notes of todo;s and wayne hit the nail on the head.. But for me, im adding a few things extra just for fun... hmmm