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04-24-2013, 07:08 AM | #41 |
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Re: Schubek Lifters
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04-24-2013, 09:13 AM | #42 | |
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Re: Schubek Lifters
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Dion Hildebrandt 6009 STK H/SA |
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04-24-2013, 07:06 PM | #43 |
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Re: Schubek Lifters
Thanks Greg... Its good to hear Small block Chevy? I will be under 7k... around 6500-6700 with 190-200lbs on the seat, and roughly 400 over the nose... I should be fine, huh?
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1968 Bird/TRW 455/Home ported 13's, '70 Qjet,Holley Street Dominator manifold, Comp Solid FT, 10.817/122.30/1.440 Workin' on E/SA combo 3119 E/SA |
04-24-2013, 07:24 PM | #44 |
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Re: Schubek Lifters
We were turning 7800 with the 427 at Bowling Green this weekend, with 255 on the seat, and 600 open. We have too much open right now, I need to change springs.
What will hurt ceramic lifters is low spring pressure, resulting in a loss of valvetrain control. They do not like to bounce, whether it is on the ramp, or over the nose (commonly called "lofting") and that is where you'll see them break.
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Alan Roehrich 212A G/S |
04-26-2013, 05:29 PM | #45 | |
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Re: Schubek Lifters
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1968 Bird/TRW 455/Home ported 13's, '70 Qjet,Holley Street Dominator manifold, Comp Solid FT, 10.817/122.30/1.440 Workin' on E/SA combo 3119 E/SA |
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04-26-2013, 06:00 PM | #46 | |
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Re: Schubek Lifters
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Not knowing your combination as I do ours, I really can't say. I got a lot of help from fellow racers and fellow engine builders, as well as cam grinders to find what our combination likes. You should speak with your cam guy, and with people running similar combinations. Some engines that run at a lower RPM use more aggressive cam lobes, and still need as much spring pressure as higher RPM engines.
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Alan Roehrich 212A G/S |
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04-26-2013, 09:18 PM | #47 | |
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Re: Schubek Lifters
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04-26-2013, 10:37 PM | #48 |
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Re: Schubek Lifters
Chris will give you good advice, he is one of the best guys to deal with for Stock and Super Stock cams and valvetrain.
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Alan Roehrich 212A G/S |
04-30-2013, 09:50 PM | #49 |
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Re: Schubek Lifters
Any reason to run restrictors , with Smith Machine lifters?
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1968 Bird/TRW 455/Home ported 13's, '70 Qjet,Holley Street Dominator manifold, Comp Solid FT, 10.817/122.30/1.440 Workin' on E/SA combo 3119 E/SA |
04-30-2013, 10:48 PM | #50 |
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Re: Schubek Lifters
Yes to keep the oil in the pan and going to the mains and rods., especially with roller rockers. SOP with 400's in our deal
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