max lift with stock valve springs - Team Camaro Tech
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post #1 of 4 (permalink) Old Jul 25th, 01, 03:02 PM Thread Starter
 
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Does anyone know what the maximum valve lift a small block chevy with stock valve springs (441 head castings) can use?
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post #2 of 4 (permalink) Old Jul 25th, 01, 06:51 PM
 
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490 lift bud , thats the most u can go i ran mine for 1/2 a year with stock valve springs with a 480 to 490 lift comp cam and had no probs until we added roller rockers which increased lift to about 500 then i broke one valve spring in to places , now i got 560 lift springs
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post #3 of 4 (permalink) Old Jul 26th, 01, 06:17 AM
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I'd follow the cam manufacturer's recommendations. Changing springs is cheaper and easier than broken parts.

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Huck
355 SBC powered '87 Chrysler Conquest TSi - 10.3:1, Vortec heads, XE 268H cam, HEI, eq. length shorties, Performer RPM intake, 750 Edelbrock (1407), T-5 and 3.54:1 posi indep. rear
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post #4 of 4 (permalink) Old Jul 26th, 01, 07:10 AM
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Huck has it right change them when you change the cam. If you have ever tested a stock spring that has some miles on it you wouldn't even consider using them with a performance cam.

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