which cubic inch?
 

trying to go high 10's in S/P. i can build either a 350ci or 383 stroker, turbo 350 trans w/brake, '96 camaro. would like to build either w/alum. heads on pump gas...any input/experiance in my decision will help...let's hear it...tks.

Re: which cubic inch?
 

Richie 2
Either can make the same power. But you will need to spin the 350 a little faster to do so.
The air flow of the cylinder heads is what determines how much power you can make.
Give brodix or dart a call and explain what you are trying to do.
If your starting from scratch I would consider a dart block or bow tie block with a 4.125 or larger bore. As the larger bore unshrouds the valves some what which also helps air flow/power.
It's also pretty easy. To build these blocks to 400+ CID
Hope this helps :)

Re: which cubic inch?
 

Is it a '96 Z28? Still have the LT1 in it? My pump gas LT1 runs bottom 10's right now. AFR heads off the shelf, solid roller, 11.77-1 compression, 414 cubes.

http://www.youtube.com/watch?v=25-1HEcUdtw

Re: which cubic inch?
 

i have SS style pistons for the 350ci, steel factory crank and can get a alm. patriot heads. with a solid roller, that should work on a budget...i just thought the 383ci would definetly make power/torque but with the price of new pistons being the deturrant...

Re: which cubic inch?
 

Well if this is to be a pump gas motor the aluminum heads are a little more detonation resistant .
The larger stroke motor will make it's power at a lower rpm than the 350 and therefore will pull better with a streetable gear and converter but I think it would be very difficult to get a street able car to run high 10's unless it's fairly light or you use nitrous.
I would research the cylinder heads carefully I believe it was hot rod that did some Dyno testing to compare SBC aluminum and cast iron heads you might want to research that article on the Internet.
If this is a race car that will not see the street, ( i.e. >4:10 gear) I would reconsider if using pump gas is the way to go.

Re: which cubic inch?
 

tks. bill... trailered super pro car with appx. 5.13 gear. would love to run 10;5;1 w/alm. head on pump fuel. just not sure which cubic inch will get me to high tens easier. going to build either engine with forged crank/h beam/srp components.

Re: which cubic inch?
 

You can go much higher than 10.5-1 on pump gas. I run 93 octane and i'm at 11.77-1.

Re: which cubic inch?
 

I know my opels lite at 2100 pounds with me in it but I have a little 355 with the first dart heads they made running on sunoco ultra with a 650 holley, 4500 stall conv ,430 gears and im running 10.20's at 132 mph. Nothing more than a street motor would be and very dependable. Dave

Re: which cubic inch?
 

Well if it's a heavy car (>2500#) with an automatic the stroker is the way to go.
The reason I question pump gas is unless you keep the cylinder head temp around 160-170 at launch you will be flirting with detonation past the 1000' mark and with open headers you can't hear it. And if you detonate it long enough you will break it. Is saving $$on fuel worth risking your motor?

Perhaps if it's available in your area, you could
consider E-85? It's cheap and will allow you to run 12:1 and run a little cooler. But there are some pitfalls with E-85 such as the expense of converting your carb and the need to test the fuel before you buy it as the percentages of gas to eithanol can vary.
But it's something you can consider.

Re: which cubic inch?