Cobra intake and 65mm on Speed density?
 

I have the 86 motor. The intake and throttle body are even smaller that 87+ and the heads suck. Would this be a good subsequent mod? Is it going to cause any drivability problems? And lastly (and most importantly!)would I notice an increase in horsepower? Thanks in advance.

------------------
86 GT T-tops, AOD, B&M shift kit and hammer shifter, ROH wheels, K&N, Timing,MAC headers, 2.5 off road H, 2.5 American Thunder, 87 spindles, rear disc,SS lines, BBK 1.5, poly bushings, Steeda G-trac and subs, Strut bar.
"DRIVE LIKE YOU STOLE IT!"

It probably work. I'm speed density too and trying to build a similar setup. A guy post me a reply and he said that he have stock ported 88 head, explorer intake, 65 mm tb, 1.7 roller rocker. You have to keep the stock cam on the speed density. If you wan't to have cheap combo port your stock head and intake, 1.7 rr, 65mm tb.

Yan88gt: complete exhaust, electric fan,cold air kit, pulley, 3.55 gear, hurst shifter,U/L control arm, 8.81 in the 1/8 mile on street radial tire

I had all that stuff on my '88 when it was still speed density. It ran fine.

------------------
1988 Mustang GT
12.0 @ 122
1992 BadAzz Wrangler
1993 Explorer