I have a 91 Z28 and i want to put a new cam in. I want the most jorsepower with the best idle sound. I have heard people talk about the LT4 Hot cam. How good is it. I also want to put a new set of heads on with the cam. Which ones are good. I have a complete exhaust, chip, and hewaders. Please healp.

 

You dont say whether you have TPI or TBI. I think the cam selection will be different depending on the induction system.

 

comm'on ws6 they never made a z w/o tpi. Derrick

 

I have the same engine and am swapping my cam in 2 weeks - go with the crane compucam 2032 - this is basically the best cam you can use on a tpi 305 /w stock heads - also i've heard it works nicley with the spd density copmuters we have - crane says its too much for a 305 but from what i've researched and learned from asking around over the past year it's basically the best one...

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91 z28 lb9 5 speed - hooker 1 5/8 headers - high flow cat- full 3 inch exhaust - home made ram air - tpis airfoil - dual chamber flowmaster - Stage 2 Jet Chip and 160 stat - 8 mm Msd plug wires - 55,000 v hypertech coil/rotor/distrib. cap - Mac. White face gauges - lots of sound system crap...

 

Believe it or not, I didnt honestly know that the post-1986 Z28's were all tuned port! I always figured that since there were many, many LG4 powered Z28's that it would be followed by throttle body Z28's !

...Guess us know-it-alls dont always know it all!

 

Okay guys, I've got to step in and make some corrections. I'm not going into all the specifics here, but here are the basics. I'm referring to Z28/IROC-Z's only:

The 305 TPI became the no-cost base engine in the 1990 IROC-Z. It was optional in years previous. The 305 TBI was the base engine in 1988 and 1989. The 305 carbureted engine was standard on the 1985 - 1987 Z28 (with and without the IROC-Z option).

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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.
ATI D1SC (5-psig):
12.26 @ 113.55 mph
ATI D1SC (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 June 09, 2001).]