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ibejamn
New User
| Posts: 3
| Joined: 04/08
Posted: 04/10/08
09:36 PM
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Has anyone done a comparison with the GMPP fast burn heads and the aftermarket aluminum heads?
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Posted: 04/12/08
10:56 AM
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The fast burn heads are pretty nice but it all depends on the application. What engine? What heads are you comparing to?
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ibejamn
New User
| Posts: 3
| Joined: 04/08
Posted: 04/12/08
06:08 PM
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i'm using them on a 383 with a comp roller xr282..rpm air gap and holley 780..auto tranny with 2500 stall and 3:73 9 inch in my 1980 elky...i was wondering how they stack up against the afr 190 and dart as well as rhs...
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njunmstr
New User
| Posts: 11
| Joined: 10/07
Posted: 04/15/08
06:42 AM
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If I'm not mistaken you will need a raised runner manifold or a spacer plate for your Air Gap. They are capable of around the high 400's on HP and TQ with your combo, maybe more HP. Definitely a great bargain when compared to the other heads you listed.
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Posted: 04/17/08
09:45 AM
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Comparing those to the ones you mentioned, I'd have to vote for the AFR 190's. We built a 383 not long ago and with a really mild hyd flat tappet cam (230/236) and the new 190 eliminators and it still made 472hp and 450 ft lbs. That is on a dyno with conservative numbers.
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