what do you think this combo will run?

[cutty]

350 30 over,forge flat top2 valve relief pistons, 284 duration cam with 480 lift,228 at 50, has 305 heads the 416's with 1.94 valve installed and some port work,eddy performer rpm intake with 650 holley double pump carb,transmission is a 350 turbo with 2500 stall,rear is a 373 posi, this is in a 84 cutlass

and yes headers going into 2.5 inch exhaust with flow master 50's, anyone got any guess's as to what it might run,my buddy says 14.6, i seem to think maybe 14.1's, what do you think???????????????

 

[BrownGP83]

Low to mid 14s sound like a safe bet to me. But i'm no expert either!

 

[cutty]

i know when i had my 525 lift solid cam and sportman II heads it went 12.97 in my camaro with a 3500 stall,shifting at 6500

but lending buddy the 305 heads and block nothing else........lol

 

[rippinriley]

mid 14's sounds about right,the heads & cam are what hurt the perf.

 

[N.O.S SS]

I think i would go with your buddy.14.6 is about right

 

[dedub]

I love these sites and thought I would share, though you might have seen them already. I found they are pretty damn accurate for my 80 ss Elky.

http://robrobinette.com/et.htm
http://www.jcalculator.com/?c=1_4_mile_calculator
http://www.dragtimes.com/horsepower-et- ... ulator.php

 

[82355supreme]

Your crappy heads are killing your performance. Low 14s, MAYBE 13.90 if you're lucky. If your wallet can support it, get some good "low-price" heads (DART,Patriot,World) and you'll see high 12s or very low 13s for sure.

Someone commented that your cam is too small..... it's not .480 & 230* duration is all 'ya need for a solid street car. That much lift & duration is good for 400+ HP & Torque, with good heads.

 

[NAILS]

Your crappy heads are killing your performance. Low 14s, MAYBE 13.90 if you're lucky. If your wallet can support it, get some good "low-price" heads (DART,Patriot,World) and you'll see high 12s or very low 13s for sure.

Someone commented that your cam is too small..... it's not .480 & 230* duration is all 'ya need for a solid street car. That much lift & duration is good for 400+ HP & Torque, with good heads.

you beat me to the punch lol.

great cam choice. i have a 327 with the same exact cam specs... only i have a descent set of heads ( afr eliminator street heads ) cam is mint, and making almost 450 hp / 400 ftlbs. ditch the 305 heads those valves and cambers are not suited for making power. go to a junk yard and pick up a set of fuelies if your on a budget.

 

[85 Cutlass Brougham]

Why, oh why would you run 305 heads? Their only advantage is the small chambers that will bump the compression. Other than that, they are severely flow restricted. I don't care what valves they have, they won't ever flow enough air to make real power. Get a set of the cheapest aftermarket heads you can find and you will probably see another 50-100 hp. They are that bad when paired to everything else you have.

 

[79LT1Monte]

I would have to jump on the band wagon and agree about the heads, you can get a set of vortec heads assembled for next to nothing and they will flow a hell of alot more than what you have. Just my .02