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Author Topic: Question on Valvetrain  (Read 3206 times)

Offline Da67goatman

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Question on Valvetrain
« on: May 31, 2011, 07:04:47 pm »
What is factory rocker ratio on smallblock 350?  What are stock valvesprings max lift?  Thanks to whoever can answer.
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<Pitcrew>
1989 R2500 Suburban mild 350 TBI 700r4 10.5" 14bolt 4.10 w/ 33s
1992 fullsize Blazer 4x4  35s no lift, 4.10s, Hella driving lights, TJ Flares, Huge bumpers, Snorkel, custom interior

Offline Psycho71

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Re: Question on Valvetrain
« Reply #1 on: May 31, 2011, 08:16:08 pm »
Stock rocker arm ratio would be 1.5:1... Not sure about the max lift of the springs, but I've seen people run .450" lift cams with stock valve springs before. Not sure if they were right in doing so, but no major failures occurred.
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Offline Da67goatman

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Re: Question on Valvetrain
« Reply #2 on: June 01, 2011, 08:27:08 am »
I have come across a cheap set of 1.7 rockers, can I run those with a stock cam for better performance without lose of mileage?  Would that be too much lift for stock springs?
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<Pitcrew>
1989 R2500 Suburban mild 350 TBI 700r4 10.5" 14bolt 4.10 w/ 33s
1992 fullsize Blazer 4x4  35s no lift, 4.10s, Hella driving lights, TJ Flares, Huge bumpers, Snorkel, custom interior
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