Heres what happen. I broke a vavle spring and it bent the valve. So I had a extra set of heads from a 86 GT at work and just swaped them out. After I got them on the car was only running a 13.5@100 or so at the end of the season. So I bought these GT-40's and put them on and here I am. My old heads don't look like they have anything done to them, as far as I know they have never been off the car. Some old lady had it before I bought it off my friend that didn't do anything. It made me currious when I swaped them why it was that much slower??? Maybe bad vavle springs on the heads? Or the poor flow on the E6's or what ever they are. They had 188k on them. They were just a replacement till I got some money. So instead of just replacing that vavle and putting them back on I decided I would put the money into a better investment, and here I am. Make since now? So it did pick that much up over my 2nd set of heads, but theoredically not much over the original E7's that were on there. Anymore questions just ask....
------------------
87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 12.96
Best MPH 103.42
Best 60' 1.695
Visit my site at:
http://www.geocities.com/cobrar93_2000/MyPage.html