i went up to a dyno today with a friend (302man), his friend from work has an 88GT with a brand new 302 block, 347 crank (still 4.00"bore), edel. 6037 heads, F-cam, 75mm MAF, 75mm TB, all with the STOCK intake, for some reason, the guy he got the car from built this motor with all new parts and must have run out of cash to get a new intake. anyway, about the dyno runs...
the first pull is at a base 10deg timing, which is where he had been driving it, so we wanted to see what it was making there, we all knew it wasnt gonna be too great with the stock intake on there
the ONLY thing we changed for the second run is the timing, bumped to 14deg and ran it again,
we all about crapped our pants when we saw the numbers, 40.1hp and 34.1 lb-ft increase!
there is no way i would ever believe this if i hadn't been there and participated
the third run was just for fun, the engine had heated up so thats why it lost a few hp
this thing would probably pick up about 50-60hp with a good intake on it. talk about breathing through a straw, this is more like breathing through a coffee stirrer
the attached file is the horsepower dyno sheet