attn: desktop dyno people
 

I need sombody to give me an idea on my new configuration.

std. bore 350 (3970010)
9.1:1 CR (with 72cc heads)
#416 heads (2.02/1.60 valves 60cc chambers)
110LSA .233/.242 duration .504/.525 lift cam
weiand team G single plane intake
holley 670 street avenger
long tube headers


and just for the people wondering
3000 stall
stock 700R4(it'll probably explode, planing for a B&M TH400)
what ever ring and pinion ratio the stock 4 link 8.5in 10 bolt has
and 255/60 15 futura GLS (launched a 2.0 in the T/A on stock TC)

Why such a low CR?

Not that low with th 60cc heads he says he is using. Probably about 10.25 to 1.

400 horse 400 torque at 5200 rpm....

but i dont think that is rite....

Moved to the tech section, and shoveled the ****. Keep it on topic please.

What do those heads flow?

Bubba, did you mean 416 or 461 heads?

I still ask, are you sure it's an 8.5" 10-bolt? They only came in '84-'87 Turbo Regals and '84 Hurst Olds, and '85-'87 442s. If it's the original rear from your Regal, at best it would be a 7.5" rear with 3.08 gears; most likely it's got 2.41s or 2.56s though. If it's not original, then you gotta do some research; find out what it was from, or pull the cover and start counting teeth.

#416 the 305 HO heads, stock 58cc but i had to have more room cut in them for the 2.02 valves

nah its really a 8.5 10 bolt. its a regal limited. the 7.5s were all torque arm set ups, this is a 4 link.

thats with the stock 72cc heads NOT the 60cc.

something like that

not really sure. I know stock with 1.84/1.50 valves they flow 16xcfm. I'm guessing with the work done to them maybe, just a guess 200cfm. could be less could be more.

Bubba,

It seems to me that you have a ****ed up combo.

Highway gears, medium/big cam, 305 Heads, single plane manifold. Looks like you have some high RPM parts matched with off-idle parts. How did this run in your firebird? Did that have low numeric gears?

http://img175.imageshack.us/img175/4968/feb240001.jpg
thats what the 305 heads look like. I had them completely redone so they would run higher RPM. the T/A never got to see this set up.

the rear gears are getting swapped out soon, thats just a given. I know what I need to do with the rest of the car to work with the motor, right now i'm concerned with draining every last ounce of HP I can get with what I got

False....My brother's G-body has a 7.5" 10 bolt (with 2.41s) with the standard 4 link....

Never seen a G-body with a factory tq. arm setup either.

- Justin

i'll have to look again...i'm pretty sure its an 8.5

Is this emissions friendly setup?

If not, maybe drop the LSA down a few degrees.

emissons what??? lol I've been looking at a few cams I like the voodoo cams for various reasons

its telling me 257/338 @ 4k.

Bubba, check out this link here - http://www.oldspower.com/vb/showthread.php?t=31398 - it's got pics of what the 7.5" G-body rear looks like compared to the 8.5" G-body rear. You'll notice two triangle-shaped tabs on the 8.5" in the pics in the link.

And Justin is correct, 99.8% of the G-bodies produced had a regular 4-link rear. Only the '87 Buick GNX got something different- they came with a Watts link setup.

thats less than what i'm running now, with 9.1:1 and super crap heads

i put in all the info you gave me, not sure man. it does seem a bit mismatched to me

Do you have a headflow file for those heads?

- Justin

I didnt realize you put 2.02s in those heads, i missed that. Re did it, and its telling me 335/387. Im not too sure

GNX was a torque arm car. As far as I know all others were 4 links.

Do you have access to a 750 carb? With such a disparity between the torque and HP, even on a low rev'ing engine, it seems like the engine is running out of air. The larger carb would also help a bit by moving the torque and hp curves up the rpm range a bit.

Where did you get the heads done? See if you can get better flow information from whoever worked on them to help build a better model of the engine.

I had them done at jarhead engines, he doesn't have a flow bench, but the only thing i really had him do was gasket match that open up the chambers for the bigger valves