Joined: Mar 2019

Posts: 2

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I recently purchased a 408 done by a family friend which I’m no longer in contact with. He left me with some info on what was done but I don’t think it was a properly thought out build. The car seems to be lacking power and no matter what I do and can’t 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) shouldn’t be higher than 11.1) I have tried octane booster with no luck

I apologize on my lack of knowledge, figured I’d ask someone with more knowledge on this stuff, thanks

Joined: Jun 2013

Posts: 11,036

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From: Monrovia SO-CAL (USA)

Joined: Mar 2019

Posts: 2

Likes: 0

Yes. It starts and idles fine. And even high rpm it’s fine just under load it pings

Joined: Mar 2015

Posts: 5,438

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