Drumer919

iTrader: (2)

What can I expect in terms of power and times with my combo?

GM goodwrench 350 short bock
Ported 610 (305 H.O.) heads
10.8:1
Crane 272 H10 272* .454"
Weiand stealth intake manifold
Edelbrock 1407
Pacesetter LT's
True duals
3.23's

What would you expect it to run on DR's?

1997bird

iTrader: (2)

You would have been better off staying with the LT1 in my opinion. Those 305 heads are not a good idea at all, ported or not. They can't support enough air flow for a 350+ cubic inch motor. I bet your peak HP is at about 3,500-3,800 rpm, the motor may rev higher than that, but will choke down after that point. If you are looking for more compression it would be better to use a set of late model (1996-2001) vortec heads and mill them down. You can pick up a set of good used vortecs for pretty cheap.

Shawn @ VA Speed

iTrader: (3)

x2,it will probably make about 325 at the flywheel right now,350 vortec will give you about another 35-40 hp

Drumer919

iTrader: (2)

It was never an LT1 car, it was a 3.4 when I got it. I'm saving money right now for a set of patriot heads hopefully before next spring but I cracked the OE heads on my crate motor last fall and I had these laying around and tossed them on so I could drive the car. It pulls well all the way up till about 4200 before I can really feet it choking. Oh well, thanks for the input.

Just out of cursioty how do you guys think it would fair against a stock LT1 and LS1 and more importantly a 4.6?

Shawn @ VA Speed

iTrader: (3)

stay away from gm stuff but i wouldnt be afraid to tangle with some fords

RIDINFILTHY

iTrader: (10)

u will lose, to all i think!!! but i like the idea just need more power..probably 14teens somewhere in there

Rogue86

iTrader: (14)

depending on how heavy your car is, it should go mid 13's.

I had a 3rd gen with #416 305HO heads on a 350, th350, and 4.10 gears which ran 13.05 at 105mph with a lot less compression, and smaller cam. I was also using a plain jane edelbrock performer intake. Car weighed 3050lb with me in it.

Shawn @ VA Speed

iTrader: (3)

i would agree in the 13's,back when i was young and poor we had a 86 z28 with a 305,put in some small *** cam,a torker 2 intake,some headers and a 4.10 gear and ran 14.0's

StangAddict

i may have a set of l98 heads for sale soon!

capn smokey

iTrader: (1)

4th gens are alot heavier though, I think the car will need atleast a 4.56 to make low 13s considering he will have a pretty poor powerband with those heads. Slap any decent head on there and you will hit some 12s, my car ran 12.80s@110 with a stock zz4 in it and those only make 350HP~

Drumer919

iTrader: (2)

My old heads were 76CC 350 heads and it was high 14's with the stock cam. I wonder how much better it would run if I would have re-used the OE heads and just did this cam, it feels a good bit faster like this. Oh well...

What manifold would you guys go with, my Weiand or an edelbrock to match my carb?