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Can you share the specs on your new roller cam? Mine is a 225/230 with stock heads. I'm wondering what kind of power you will get with new heads.
Thanks,
John
engine dyno! I had the heads ported bigger valves and a installed a straub squishy roller In a .040 over 454
When you post your power numbers, would you mind also laying out the timing figures you end up with. Also, what heads and compression are you running. Thanks.
•Adv. Dur 292/302
•.050” Duration233/243
•.200” Duration152/158
•Lift .620/.600
•Centers 103/111
•LSA 107
its a .040 454 10.1 compression the block is a 73 and the heads are 290 casting from 70 with 100cc chambers 2.19-1.88 valves pocket ported and gasket matched on the intake side. the motor made 567 hp at 5800 576 tq at 4500 makes over 550 tq from 3800 till about 5400 when it drop off a little timing was 34*
Last edited by mvette76; May 16, 2014 at 02:48 PM.
•Adv. Dur 292/302
•.050” Duration233/243
•.200” Duration152/158
•Lift .620/.600
•Centers 103/111
•LSA 107
its a .040 454 10.1 compression the block is a 73 and the heads are 290 casting from 70 with 100cc chambers 2.19-1.88 valves pocket ported and gasket matched on the intake side. the motor made 567 hp at 5800 576 tq at 4500 makes over 550 tq from 3800 till about 5400 when it drop off a little timing was 34*
•Adv. Dur 292/302
•.050” Duration233/243
•.200” Duration152/158
•Lift .620/.600
•Centers 103/111
•LSA 107
its a .040 454 10.1 compression the block is a 73 and the heads are 290 casting from 70 with 100cc chambers 2.19-1.88 valves pocket ported and gasket matched on the intake side. the motor made 567 hp at 5800 576 tq at 4500 makes over 550 tq from 3800 till about 5400 when it drop off a little timing was 34*
Nasty! Congrats on a great result. Now go out and get some sticky rear tires- you'll be needing them!
•Adv. Dur 292/302
•.050” Duration233/243
•.200” Duration152/158
•Lift .620/.600
•Centers 103/111
•LSA 107
its a .040 454 10.1 compression the block is a 73 and the heads are 290 casting from 70 with 100cc chambers 2.19-1.88 valves pocket ported and gasket matched on the intake side. the motor made 567 hp at 5800 576 tq at 4500 makes over 550 tq from 3800 till about 5400 when it drop off a little timing was 34*
Oh yeah, you did good. Thanks for the info, I'm working with another 454 owner with a Chris Straub hydraulic roller.
I'm very curious to know what pistons you have in that beast and how much valve to piston clearance you have. Did you need to relieve the pistons for clearance? Those closed chamber heads can present some challenges in that respect, especially when combined with a healthy cam that really hangs those valves open.
I'm very curious to know what pistons you have in that beast and how much valve to piston clearance you have. Did you need to relieve the pistons for clearance? Those closed chamber heads can present some challenges in that respect, especially when combined with a healthy cam that really hangs those valves open.
they are KB pistons with a small dome don't remember part number