Compstar cranks
Compstar cranks I'm waiting to here back from a sales rep. But does anyone know if the compstar series cranks have a 3.75 stroke for a 5.7 inch rod. I was told all they had was a 383 with 6.0" rod. I would like to run a piston with larger ring lands is the reason I want a shorter rod.
IMO you are worrying about nothing. On a 396 then yeah you want to keep the rods shorter than 6" for boost or juice but the rings on a piston for a 3.75"/6" combo are not that high as to be much concern.
I have a set of brodix heads but at this time the numbers are lower then expected. I was hoping for 320+ on the int and 230+ on the exhaust.
Right now the're not much better then stock ported heads.
These are flowed at 28 on a 4.030 bore
int exh lift
195.4 133.5 .300 at 27.97
241.7 162.1 .400 at 27.96
264.5 183.6 .500 at 27.95
274.3 196 .600
283 203 .700
Right now the're not much better then stock ported heads.
These are flowed at 28 on a 4.030 bore
int exh lift
195.4 133.5 .300 at 27.97
241.7 162.1 .400 at 27.96
264.5 183.6 .500 at 27.95
274.3 196 .600
283 203 .700
Last edited by jakesz28; Sep 28, 2007 at 07:00 PM.
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Verdad Gallardo The reaon I mention the heads is I have watched someone Matt here and I both know switch from 175 to 200 jets and not gain anything, granted that was milder heads but it still demonstrates what I think you will find.
How deep in the 9s are you looking too run?
How deep in the 9s are you looking too run?
Originally Posted by jakesz28
I have a set of brodix heads but at this time the numbers are lower then expected. I was hoping for 320+ on the int and 230+ on the exhaust.
Right now the're not much better then stock ported heads.
These are flowed at 28 on a 4.030 bore
int exh lift
195.4 133.5 .300 at 27.97
241.7 162.1 .400 at 27.96
264.5 183.6 .500 at 27.95
274.3 196 .600
283 203 .700
Right now the're not much better then stock ported heads.
These are flowed at 28 on a 4.030 bore
int exh lift
195.4 133.5 .300 at 27.97
241.7 162.1 .400 at 27.96
264.5 183.6 .500 at 27.95
274.3 196 .600
283 203 .700
No this is an old set of -10 that have been converted to run on the LT1. I took a chance when I got them because they were older castings. By the look of the ports I expected them to flow a lot more. But the place that has them doesn't think they can get that more out of them.
The new -10's flow these numbers out of the box:
2.080 Intake 145 195 240 253 262 262 262
1.600 Exhaust 110 139 155 161 166 168 168
And will flow 320's and 230's ported.
The new -10's flow these numbers out of the box:
2.080 Intake 145 195 240 253 262 262 262
1.600 Exhaust 110 139 155 161 166 168 168
And will flow 320's and 230's ported.
If I were you, I might try to find some better heads. Not that what you have is bad, but you are less than pleased and you are still at the point where you can change the setup without any work.
