I have a 1996 Gt non PI, 5spd. I have 4.10 gears, off road x-pipe, catback, plugs and wires, fenderwall intake, short shifter, hardened tranny and engine mounts, King Cobra clutch, lowering springs, and I have 18inch saleens replicas with 285/ 40/18 Sumitomo street tires, and a different thermostat but im not sure which one because it was on there when I bought it. I went to the track in the begining of the year actuallt opening day with my stock 17 inch rims with 275 street tires. I did horrible, my best 60 foot was like a 2.6 and I didnt get traction till third, it didnt help that it was drissling but im not trying to make any excuses. I had a few really good reaction times. My best 1/4 miles was a 15.1 at 96mph.
So tonight me and my buddies went back to the track it was really humid and about 85 degrees out, but the track was hooking pretty nice. I had decent reaction time I think my best was like a .343 and my best 60 foot was a 2.174 which I think is decent for street tires. But my best 1/4 miles was 15.132 And the best mph I saw all night was 94mph but I averaged about 92mph
So heres the thing my car was hot all night I even let it sit with the hood up for a half hour and the lowest it got was half way, then I got in the car and turned the heat all the way up and drove slow to staging maybe 1/4 a mile and my car would get to 3/4 heated up So the only thing I can think is to do a tune up and check the timing? but it had a proffesional tune up about 3000 miles ago.
So this is what im wondering is the heat part what is slowing me down that much or is it also that I added 18inch rims with bigger tires so theres more rotational mass? Im confused I thought I would have went low 14's especially with my 60"? I have MT ET streets on 15inch welds that im just waiting on the lug nuts to come in the mail. I figure this should help out alot.
Is there anything else anyone can think of to check or to help me out? Sorry for the long post.
So tonight me and my buddies went back to the track it was really humid and about 85 degrees out, but the track was hooking pretty nice. I had decent reaction time I think my best was like a .343 and my best 60 foot was a 2.174 which I think is decent for street tires. But my best 1/4 miles was 15.132 And the best mph I saw all night was 94mph but I averaged about 92mph
So heres the thing my car was hot all night I even let it sit with the hood up for a half hour and the lowest it got was half way, then I got in the car and turned the heat all the way up and drove slow to staging maybe 1/4 a mile and my car would get to 3/4 heated up So the only thing I can think is to do a tune up and check the timing? but it had a proffesional tune up about 3000 miles ago.
So this is what im wondering is the heat part what is slowing me down that much or is it also that I added 18inch rims with bigger tires so theres more rotational mass? Im confused I thought I would have went low 14's especially with my 60"? I have MT ET streets on 15inch welds that im just waiting on the lug nuts to come in the mail. I figure this should help out alot.
Is there anything else anyone can think of to check or to help me out? Sorry for the long post.