which cubic inch?

richie 2 · 09-29-2012, 07:15 PM

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.

Bill Baer · 09-30-2012, 11:55 AM

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

joelster · 09-30-2012, 12:39 PM

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.

richie 2 · 10-08-2012, 08:29 AM

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...

Bill Baer · 10-10-2012, 08:54 AM

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.

richie 2 · 10-10-2012, 03:42 PM

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.

09-29-2012, 07:15 PM	#1
richie 2 Senior Member Join Date: Feb 2009 Posts: 967 Likes: 419 Liked 200 Times in 91 Posts	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. Last edited by richie 2; 09-29-2012 at 07:22 PM.

09-30-2012, 11:55 AM	#2
Bill Baer Senior Member Join Date: Jul 2007 Location: Nothern IL Posts: 596 Likes: 1 Liked 1 Time in 1 Post	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 __________________ Bill Baer 3391 SC, 339B SC, QR

09-30-2012, 12:39 PM	#3
joelster Member Join Date: Nov 2007 Location: Tonawanda, NY Posts: 106 Likes: 0 Liked 0 Times in 0 Posts	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.

10-08-2012, 08:29 AM	#4
richie 2 Senior Member Join Date: Feb 2009 Posts: 967 Likes: 419 Liked 200 Times in 91 Posts	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...

10-10-2012, 08:54 AM	#5
Bill Baer Senior Member Join Date: Jul 2007 Location: Nothern IL Posts: 596 Likes: 1 Liked 1 Time in 1 Post	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. __________________ Bill Baer 3391 SC, 339B SC, QR

10-10-2012, 03:42 PM	#6
richie 2 Senior Member Join Date: Feb 2009 Posts: 967 Likes: 419 Liked 200 Times in 91 Posts	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.