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Discussion Starter #1 (Edited)
How much boost safely on a GM crate ZZ383

I have found a powerdyne PD11 blower with very little use for pretty cheap and am wondering how much boost I could reasonably run before detonation problems. The ZZ is about 10:1. Anyone one have some experience? 6 or 7lbs would make it a little more fun to drive i think.
 

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Go for it 6-7psi isnt that much. Get a knock sensor and if you get any detonation then shim the heads. Hypereutic pistons dont take detonation as well as forged supposedly so you just have to be extra careful.
 

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I saw that on P-shop also!!!
Great deal I was also thinking of buying it....
6 psi is what i would run ...non intercooled...8-10 with a cooler
had one on a 5.0...... 6 was perfect!!
 

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I think the zz motors are closer to 9 to 1. With this compression ratio and aluminum heads I think 8 to 10 psi would be ok with premium fuel.
 
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