Extrapolating from this post:
http://www.ft86club.com/forums/showp...&postcount=185
Quote:
Originally Posted by AceHeader-MT
350= max torque (202.4NM), lowest peak HP (175.1HP)
250= torque (approx 200NM), HP (approx 178)
150= lowest torque (approx 195NM), HP (approx 182)
These numbers are approximated off percentages of the 350 when we did a stock dyno run with OEM frontpipe
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It could be hypothesized that the JDL 4-2-1 header might offer slightly higher peak horsepower, while offering less torque. What would be nice would be a dyno overlay of the 150 vs 250 vs 350 to really see where the plots shift, and it wouldn't be a stretch to infer that the JDL header might shift the plot over just one more spot, likely towards the top of the rpm range and potentially at the detriment of low end torque--if I was speculating.