Inside scoop on ZZP's alum. heads.

[97rs4life]

Re: Inside scoop on ZZP's alum. heads.

they come flowing way more than our stockers already, then there is room to port them more if you want.

From the zzp website

"As cast, the heads outflow any ported iron head currently in our market. They have been designed for addtional porting for those who wish to take them further. Look for flow numbers approaching 300CFM on ported units."

[airattack111]

Re: Inside scoop on ZZP's alum. heads.

yeah I'm sure before they are already as good if not better as ported iron heads... mmm aluminum :drool:

The valves/springs etc. shouldn't cost to much, but yeah if you wanted additional porting from zzp it could cost alot.

[FloydSummerOf68]

Re: Inside scoop on ZZP's alum. heads.

i highly doubt that. its taken them over 2 years to develop them. if they were taking the GM design and making a mold for aluminum it wouldn't have taken them more than 3 months to do all that. if you read thier site, they said they had an a pro engine builder help design it. no way they're gonna get 300 whp like they're claiming without severe design changes...

Yes, they will come flowing more, but they are not going to be ported and polished with valve jobs on them.

These heads will be WELL over 2 grand if you want to make them run to their potential.

If you think you're buying a full set of ported aluminum heads for less than they sell their ported iron heads then you're insane.