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Yep I know. I want a pretty long life out of this trans/motor combo so i'm not gonna be doin alot of Hot Roddin, but do want it to come alive when I ask it to. Do I need to remove the damper in the Summit springs for this cam?
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Camaro_Nut2001 (01-06-2013) | ||
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If you are using any of the common stock diameter high perf valve springs you remove the inner damper
to go on a stock vortec head. EG lunati 73943. Some people use the GM LS-6 springs and comp 787-16 retainers on these heads. With this 1103 camshaft the stock GM vortec head springs are fine. You need nto get all carried away with valve spring pressure at all for this mild cam. You do not need to rev the **** out of the combo with this cam. 5000-5500 rpm is plenty. Its all about torque. |
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Camaro_Nut2001 (01-06-2013) | ||
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The caltac design is very effective. |
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I did machine it for the Summit springs so I have to run the damper or a locator right?
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.. Your setup should HP peak around 5500-5700 RPMs, shift around 6000 or so...
.. 275-60R15 rear tires should fit under there... .. Porting the intake ports is most important... you only have a max of 14.7 psi pushing air into the intake ports of a N/A engine... several hundred psi pushing it out the exhaust... Comp cams claims you can reduce exhaust valve lift by 2/3's with little effect on performance... .. The exception, of course, would be engines with really horrible exhaust ports to start with... I've had to remove the air reactor boss from the ports of a '77 351W engine, it blocks about 80% of the port which was small to begin with... it wasn't even used on the marine engine I was building up... Ford should have sold Mercruiser engines without them... I don't think Mercruiser even realized the bosses were in there, since they didn't change the HP rating after the engines started coming through with the blocked ports... Mercruiser switched to Chevy engines the next year... Last edited by BuzzLOL; 01-07-2013 at 09:57 PM. |
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Camaro_Nut2001 (01-07-2013) | ||
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Ok, I finished one head and got the other one apart and measured my quench this afternoon after my doctors app. I came up with 0.0260 in the hole. I'm running a 4 valve relief flat top that i'm guessing is around +6 vol. and the Vortec heads at 64cc. Like I said earlier, i'm running the Summit K1103 cam-Advertised Duration 272/282, Lift .442/.465 on a 112lsa. The way I figured it, keep in mind i'm still learning on DCR and SCR, I need to run a .028 head gasket. Am I on the right track? If so what do ya'll think about this gasket- Chevrolet Performance Head Gaskets 14096405 - SummitRacing.com ? Is there a better gasket both quality and price? If i'm completely off base lol, what gasket do I need to run with my setup? I'm shootin for as close to 10.1cr as I can get. Thanks.
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First time porting heads
This fel-pro .015 thick gasket wiil set you quench at .041 by your .026 measurement. Fel-Pro Performance Head Gaskets Q1094 - SummitRacing.com. Your static compression would be 10.248 and the DCR 8.295.
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Camaro_Nut2001 (01-08-2013) | ||
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Sorry, I forgot to add that the head gaskets that came in my gasket kit, Sealed Power Gasket Sets Z2601000 - SummitRacing.com , are .039 compressed thickness which, once again if i'm figuring this right, would put my motor at 9.94.1cr.
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