? about 1/4 mile times

[MAve2345]

I have a 347 pushing over 300 RWHP and around 400 RWTQ. I have a 355 gear in the back and a would class t-5. I ran a 8.6 in a 1/8 mile with the old 302 and in the 1/4 i ran a 13.4 at 101mph. What will i be running with the 347 with some street slicks?

 

[mike keirstead]

What does your car weigh. Do you have any suspension work. These are both critical in guessing 1/4 times.

 

[willys1]

I have a 347 pushing over 300 RWHP and around 400 RWTQ. I have a 355 gear in the back and a would class t-5. I ran a 8.6 in a 1/8 mile with the old 302 and in the 1/4 i ran a 13.4 at 101mph. What will i be running with the 347 with some street slicks?

How much hp did the 302 have?

 

[MAve2345]

What does your car weigh. Do you have any suspension work. These are both critical in guessing 1/4 times.

Mike, I dont know how much it weighs and i dont have any suspention work dont to it yet. i have removed the back seat all the carpet in the back the seat belts and the back panels but everything else is stock.

 

[MAve2345]

How much hp did the 302 have?

I dont know how much but i know it had the GT-40 top and bottom intakes an E-303 cam and windsor heads. thats all it had. I would guesstamate at 250hp.

 

[25thmustang]

Ummm, 12s

 

[mike keirstead]

What year and model?

Lets say its 3300 for sake of argument. If you get good traction (slicks) and shift well it should run DEEP into the 12s. Again just a guess. Have you had it dynoed or are you guessing. If it really has 300rwhp and 400 torque then I would say 12.3-12.2.

It all really depends on how well it hooks and how well you drive.

A car that weighs 3200 or less and has 300 rwhp and has great traction and proper suspension setup will run high 11s. I have seen it done many times.

I am not saying your car will....but it may if you drive well and you get great traction.

 

[MAve2345]

Thanks mike it has been dynoed and it has alittle over 300 rwhp and right at 400 rwtq. What kind of slicks do i need i have a set of 15 inch wheels from another mustang. im going to redo the whole suspension.

 

[mike keirstead]

Get a set of 26x10.5x15 slicks. They will fit and will work with your 3.55s.
Get some good upper/lower control arms and a set of dragshocks for the rear. Maybe even an airbag. Also remove that front swaybar for some weight transfer. You will have to drive very agressive to get low 12s.

I would recommend a set of 3.73s but the 3.55s will work.

 

[Chris Walker]

well i have around 350-360 rwhp and you see what im running below, so im guessing that you will run around 12.60-12.70. but thats just a guess, only way to find out is go racing!

 

[mike keirstead]

He should be way lower than that. I run those # with less than 300 rwhp.

 

[Chris Walker]

what does a stock mustang have from the factory?
250-255???

 

[Chris Walker]

when i bought my car all it had done to it was shorty BBK headers and a catback, so we are guessing i was about 260 rwhp. and i was running 13.90's-14.00's. a good rule of thumb every 50 horsepower is about 1 second in the quarter mile, til you start getting into heavy engine mods and suspension.

 

[mike keirstead]

when i bought my car all it had done to it was shorty BBK headers and a catback, so we are guessing i was about 260 rwhp. and i was running 13.90's-14.00's. a good rule of thumb every 50 horsepower is about 1 second in the quarter mile, til you start getting into heavy engine mods and suspension.

Are you saying that your 89 had 260 rwhp with only headers and catback?

 

[mike keirstead]

what does a stock mustang have from the factory?
250-255???

87-92 had 225 hp and 300 ft/lbs at the motor. I don't what you are thinking.

 

[mike keirstead]

the 93 were rated different but had the same power.