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Need help with new 408 build

Old 03-16-2019, 10:48 AM
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Need help with new 408 build

I recently purchased a 408 done by a family friend which Iím no longer in contact with. He left me with some info on what was done but I donít think it was a properly thought out build. The car seems to be lacking power and no matter what I do and canít get it to stop pinging under load. I was wondering what I could do without spending a ton of money on bringing the car in.

This is is the info I have on the build
-408 scat flat top stoker kit with forged pistons
-mopar m1 single plane intake
-lunati hydraulic roller cam and lifters(Advertised Duration 270/278, Lift .515/.530)
-j 202 heads ported
-holley 750 carb
-(no idea on compression) shouldnít be higher than 11.1) I have tried octane booster with no luck

I apologize on my lack of knowledge, figured Iíd ask someone with more knowledge on this stuff, thanks
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Old 03-16-2019, 01:43 PM
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Starts and Idles ok ?
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Old 03-16-2019, 03:23 PM
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Yes. It starts and idles fine. And even high rpm itís fine just under load it pings
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Old 03-16-2019, 03:47 PM
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What's you timing set at and how much total timing do you have also do you have vacuum advance?
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