LarryB340
Well-Known Member
I was ask a question the other day....what is the maximum cam lift you can use with 1.5 stamped steel rockers? Any idea?
Stamped steel rockers
- Thread starter LarryB340
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bbrroowwnn
never re member
I wouldn't run them with anything over .500 lift...unless you buy the MP heavier stamped steel ones
LarryB340
Well-Known Member
I bought new mopar rockers and have already installed a Lunati Voodoo. 513/.533 with advertised duration of 272/384, in a 340 with "J" heads, 2.02/1.60 valves, gasket matched, aftermarket dual springs. A buddy back home has a comparable cam in his with stamped steel rockers, and beats on it at the track as well as the street, over 10 years now. So I went for it. I guess I'll know soon enough. Someone ask me the max lift question and I kinda got worried for a minute, didn't want to give the guy bad advice.
LarryB340
Well-Known Member
Sorry for the typo,272/284 duration.
yellow rose
Overnight Sensation
What valve springs? I ran a .509 DC cam with stock rockers and beat the hell out of it for several years before it poked a pushrod through one. If the springs aren't outrageous you should be golden.
LarryB340
Well-Known Member
Not sure of the brand, they look like more of a dampener spring on the inside, they were on the heads when I bought them, my machinist thinks they are aftermarket, not stock 340 springs, he checked em, as well as checking seat pressure. They may be direct replacement for the factory springs. Said they would go as high as .550 lift. But that would be pushing it.
Plymouth 65
I'll be in the shop
High valve spring load is the issue with the stock stamped steel rockers. 65'
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