I agree with everything except the headers.FORCED2DV8 said:Stock engines came with a 58mm throttle body, so if yours is 65 then its aftermarket, You can change to the 94-95 MAF with out changing the injector because they are cal. for 19lb as well. And the fuel maps are really close. Headers will also be good, Underdrive pulleys, 180 thermostat set timing to 12-13 degrees, do a good tune up..
Have you seen the stock factory pinched headers before? They pinched them intentionally just to allow quick assembly at the plant. I think a garden hose is more efficient. Headers added nice amounts of power for me, and I believe torque. I say get headers.04sleeper said:I agree with everything except the headers.
They will only make you loose power and torque. Keep the stockers.
Yes I have. I have been working on Mustangs since 1986 so I have seen plenty of headers.fiveohwblow said:Have you seen the stock factory pinched headers before? They pinched them intentionally just to allow quick assembly at the plant. I think a garden hose is more efficient. Headers added nice amounts of power for me, and I believe torque. I say get headers.
04sleeper said:Yes I have. I have been working on Mustangs since 1986 so I have seen plenty of headers.
I also have Dynoed back to back several combo's of headers on several engines. With stock "unported" heads, adding headers LOST power and torque in all areas.
I put the ugly stock headers back on and the power/torque went right back up.
Didn't really like the way they looked but then again I was looking for power and what worked, not looks.
With amick5's stock combo he will loose power.
Well I dynoed my old 89 coupe and tried 1 1/2" EQL MAC shorties on my car and lost 3 hp and 5 ft lbs. Then I swapped them for FRPP 1 5/8" shorties and lost 4 HP and 6 ft lbs.HoodStrype said:That's wierd I've seen an 8hp gain on horsepower tv with a stock mustang and an equal length install.
They did lose low end though, but gained at high end. That was years ago though.
I also heard a rumor that the more back pressure you had the better the valves shut... if that's true you'd have a point
Sounds like a good plan.amick5 said:Thanks for all the great info. I will most likely keep the stock headers on for now and go for the bigger throtle body,egr plate ,and maf. Soon I would like to change out the intake plenum and maybe go with the ford racing intake. The bolt on's i have now have really increased my stangs proformance, I just had a tune up done and set at 11 degrees because 12 was too much pinging.only use 93 sunoco gas in my silver foxSUNOCO
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