Originally Posted by F-BIRD'88
If this was my 327 powered chevy II that already has a th700r4 with stock converter and I wanted real power but keep the easy cruising
And did not want to dig into the block:
I would supercharge the 327.
I would get some real hi perf performance cylinder heads with larger 70-72+CC
chambers to drop the cr and increase flow.
AFR 195 (75cc) Brodix IK200 70cc)
Jegs "USA" aluminum 195cc 70cc
Edelbrock performer RPM 70cc
Then bolt on a Weiand 142 blower.
Try the 268 cam you got. or use a Crane HMV278 (H-278-2)
Set it up for around 7psi boost. 1.95 to 2.10:1 pulley drive ratio.
The carb will need a few minor up grades and jetting and the distributor will need a recurve. to make them blower friendly.
The fuel system on the car will likely need upgradeing for increased flow capacity.
Your low compression street premium pump gas friendly blown 327 Chevy II will kick *** and cruise like a champ.
Big big reliable streetable power and torque.
Tame street-hiway cruising. The 3.73's are just right.
You will slay your fair share of stroker motors, LS motors and big blocks.
Mustangs and foreign stuff will be snack food.
Your stock 327 pistons are fine as long as there is no piston dome.
(flat top or dished) Low compression and reasonable 6-7psi max boost is the key.
I wouldn't discount foriegn stuff so readily, a lot of it is built a lot better than the domestic stuff... and when it comes turbocharged from the factory its usually not too hard to go fast, especialy with irs, awd, adjustable coil overs, etc...
For that matter the domestic stuff is much better than an sbc, slap a few grand into a 98 camaro and it'll walk all over the 327.
500hp is a matter of mail order bolt ons now... and that's from a 4 cylinder.