Do have the specs on the motor? Things that would be helpful in answering your question are:
- Compression ratio
- Cam specs (lobe spearation, duration, lift)
- Cylinder heads (porting, what they flow, etc)
- Intake
- Etc.
E
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1991 5.0 LX Coupe - 40,750 miles
331 cu. in. / Tremec 3550 / BFG Drag Radials
12.22 @ 114.31 mph - w/1.89 60'
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