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12-15-2014, 06:38 PM
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#1 |
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Sbc pushrod question
350 Stocker Engine, Hydraulic Roller, Roller Rockers, Lifters have
.050-.060 plunge. Max RPM 6800. Question: Will there be a measureable difference between 5/16 .080 wall pushrods vs. 3/8 .120 wall pushrods? I am getting pulled different ways depending on the source. Thanks in advance guys. J.R. |
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12-15-2014, 07:00 PM
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#2 |
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Re: Sbc pushrod question
Can,t go wrong with the heavier pushrods, but if you not run any spring pressure you can likely get buy with the 5/16 80 wall. You mite ck your lift with one then ck it with the other, if it the same run the 5/16.
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12-15-2014, 09:08 PM
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#3 |
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Re: Sbc pushrod question
JR check out my website stewardperformance.com
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Denny Steward GT/JA 246 |
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12-15-2014, 09:19 PM
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#4 |
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Re: Sbc pushrod question
Denny, Do you feel a custom 5/16 push rod is a adequate for a high rpm SBC Stocker?
(200 / 400 # springs)
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12-16-2014, 10:00 AM
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#5 |
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Re: Sbc pushrod question
Mark, a 5/16 .120 wall would be the least I would use on a SBC stocker engine.
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Denny Steward GT/JA 246 |
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12-16-2014, 01:40 PM
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#6 | |
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Re: Sbc pushrod question
Quote:
Next question (s) Sounds like about a.070 oil passage ..Enough for roller rockers? Anybody go less? Possible?
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12-16-2014, 01:49 PM
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#7 | |
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Re: Sbc pushrod question
Quote:
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12-16-2014, 02:04 PM
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#8 | |
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Re: Sbc pushrod question
Quote:
Any experience without the coating? I would assume you have to cool the springs to a certain degree too. I also assume there's a fine mist of oil everywhere in there at higher rpm.
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12-16-2014, 02:16 PM
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#9 |
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Re: Sbc pushrod question
I wouldn't think you would have any problem at all running a good quality 5/16 pushrods with that spring pressure. I ran them on my super stock engines for years with much higher pressure with no failures. Just got some 7/16 for the engine I am puting in my car. It will be interesting to see if there is any difference from the 3/8 that I have been running. I have mostly used comp pushrods in the past.
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Mike Pearson 2485 SS |
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12-16-2014, 02:31 PM
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#10 |
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Re: Sbc pushrod question
They will work just fine without coatings I have plenty of racers using them now with zero troubles at all.
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Denny Steward GT/JA 246 |
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