Winekuhler

I am gonna run a strip only car and need help deciding which heads to use. It's a 393 Windsor in a 1987 mustang that weighs 2700 lbs / 2900 with me in it, a PA C4, 3.73 gears and a 28 x 10 x 15 tire. I sold my old AFR 205s with 72cc combustion chambers to go with a smaller combustion chamber since its not gonna be street driven much any more. I plan on going with the 58 cc on the new heads for more compression. I plan on shifting the car around 6,800 rpm and want to make as much power as possible on the motor before I spray 200 - 250 HP. I am currently running a .680 lift solid roller cam with 258/268 @ .050 and a 108 CL ( I know not the best nitrous cam, but good motor cam). So should I run the new Renegade 205 that out flows the old Outlaw 225 or run the new 220 Renegade? Or is there a better head out there for me in the same $2,000 price range? Thanks for any help and suggestions.

tinman

I think I'd use the 220cc heads considering that cam and the displacment of the engine.
I'm using a 210cc intake head (Vic Jr) on a 352 CID engine with a cam not a lot smaller than yours.
Work good I think.
BTW, I think you'll find you are gouing to need more gear in that car, 4.10 or maybe 4.30........

Winekuhler

Thanks Tinman.
I have been leaning to the 220 heads just keep hearing they may be too big from others. I may go with a bigger stroker in the future and will need the heads then. Im gonna go with the Super Victor intake when i get the heads and ditch the Victor Jr. Funny you mention the rear gear because i have been thinking about going to a 4.10, just wasn't sure if i would need it on the bottle.

tinman

I'd go to a 4.30 as a fact.
Need to get the rolling no matter what.
Are you going to run 1/8th mile? Then 4.56 gears aren't out of the question.
You probably want to use at least a 4000 converter BTW........

Winekuhler

Yes I will only be running 1/8 mile tracks. On the bottle is there a way to figure my 660 ft RPM with the different gears? I don't want to turn my motor past 7,000 RPM for longevity reasons, valve springs ect. Once i have my motor built and car set up with gears I plan on having a converter built. Thanks for the help!

tinman

Try this www.wallaceracing.com
Every sort of an automotive calculator you can think of there.
You'll need to know the MPH (just guess) in order to ever figure out anything.....