I'm in the process of getting my car ready for a blower. Currently, I want to get a pair of headers (either 3/4 or 5/8) from SLP. Will the 3/4 be too much for a stock 305 tpi? It might be a while before I get the blower. I posted this in the exhaust forum and everyone seemed to point me towards the 5/8 headers. Thanks.

 

WELLL

if your planning on getting a blower, its really a toss up- i think that probably, you would still be better off with the 1/ 5/8 headers... they will keep you low end torque around.

the 305 just doesnt breath enough to use the 3/4 headers in my opinion.

Steve

 

Steve, let's go for a ride in my supercharged 305 with SLP 1-3/4" headers. I'll show you that my MAF maxes out at 255 g/s at only 3,000 rpm's!! How's that for airflow? I can only assume the exhaust is also flowing proportionately.

I honestly cannot tell you if I've lost any low-end torque because of my ~3,800 flash stall Vigilante converter. It's fairly loose and therefore the engine always seems to rev above 2,000 rpm's, even under slight acceleration.

------------------
Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig): 12.57 @ 111 mph.
Former Paxton (6-psig) & former 50-hp nitrous: 12.04 @ 114 mph.
Current ATI D1SC (Initially 10-psig): Projecting high 11's.
Future ATI D1SC (15-psig): Gotta catch them pesky 26-psig boosted TTA's!!

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

[This message has been edited by Willie (edited April 25, 2001).]