jeovanicorro
Member
Im trying go get a cam for my 2007 5.7 hemi but im trying to see what valve springs to run im trying to see if the VVT 6.4 valve springs would work with a non vvt
would 6.4 valve springs fit on a non vvt 5.7?
- Thread starter jeovanicorro
- Start date
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Absolutely not. Get 16 6.1 exhaust only springs and a full set of 6.1 intake & exhaust pushrods. VVT engine heads use longer valves than their predecessors.
jeovanicorro
Member
I’m going to run the comp cams thumpr cam you think its necessary to do pushrods and springs because I know its a NSR
For a 6.1 maybe. 6.1 and pre-eagle 5.7 use different base circles from each other (though still interchangeable); aftermarket non-VVT cams use the 6.1 base circle. Stock pre-eagle springs are good for what they were designed for (if they don't break) and that's pretty much it. I didn't trust the stock springs for a 260. I like peace of mind and springs & pushrods are cheaper than an engine.
