The specifics:
88 Coupe, WC T5. Stock 5.0 block, stock heads that have been gasket matched and the runners cleaned up (removed thermactor "humps"). E cam, 1.7 rockers, Edelbrock Performer intake, 24lb injectors/MAFS. Ford racing headers, UPR x-pipe, Flowmasters. Taurus e-fan, MSD 6AL, timing set 15*. Steeda full length sub-frame connectors, tubular lower control arms, boxed uppers, urethane bushings.
At the track I pulled consistant 13.2 @ 102 on 26" slicks. In 99* heat, first time at the track.
My immediate goal is to hit 12.99 on the current setup. I am hoping that with a proper tune and colder track temps, I might be able to do that. As it sits now, I just have the fuel pressure set at 40, and the timing set 15* advance. It smells rich, and I was hearing detonation around 5300 rpms at the track. I am hoping that a good tune would fix that, plus a few more runs to get my shift points and launch a tad better....would hopefully get me that extra 3 tenths.
However, I would like to see slightly lower 12s with no power adder...which leads me to heads. I figure everything else is pretty set at this point, there is no need modifying anything else....but the heads are keeping me down.
Which leads me to my question:
Which would I be better off doing? GT40P heads, or spending the money on some alum heads? I have a few sets of GT40 heads I could use, but I am hearing that the GT40Ps flow better and have higher compression...which would be perfect for someone who wants to stay N/A.
So, would GT40Ps get me what I want? Would just GT40s accomplish it? Or should I save my money and get some aftermarket heads?
88 Coupe, WC T5. Stock 5.0 block, stock heads that have been gasket matched and the runners cleaned up (removed thermactor "humps"). E cam, 1.7 rockers, Edelbrock Performer intake, 24lb injectors/MAFS. Ford racing headers, UPR x-pipe, Flowmasters. Taurus e-fan, MSD 6AL, timing set 15*. Steeda full length sub-frame connectors, tubular lower control arms, boxed uppers, urethane bushings.
At the track I pulled consistant 13.2 @ 102 on 26" slicks. In 99* heat, first time at the track.
My immediate goal is to hit 12.99 on the current setup. I am hoping that with a proper tune and colder track temps, I might be able to do that. As it sits now, I just have the fuel pressure set at 40, and the timing set 15* advance. It smells rich, and I was hearing detonation around 5300 rpms at the track. I am hoping that a good tune would fix that, plus a few more runs to get my shift points and launch a tad better....would hopefully get me that extra 3 tenths.
However, I would like to see slightly lower 12s with no power adder...which leads me to heads. I figure everything else is pretty set at this point, there is no need modifying anything else....but the heads are keeping me down.
Which leads me to my question:
Which would I be better off doing? GT40P heads, or spending the money on some alum heads? I have a few sets of GT40 heads I could use, but I am hearing that the GT40Ps flow better and have higher compression...which would be perfect for someone who wants to stay N/A.
So, would GT40Ps get me what I want? Would just GT40s accomplish it? Or should I save my money and get some aftermarket heads?