This is topic gt-40 iorn heads in forum Tech Talk at Northern California Ford Owners  .


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Posted by phat50 (Member # 1998) on :
 
on my car now i have eldebrock rpm intake,70mm throttle body,73 c&l mass air,underdrive pullies 1.7 rockers,shorties,o/r hpipe,silencer removed,king cobra cluch,190lb fuel pump,ajustable regulator and stock 3.08 gears and street tires.best time at the track is 14.3 with 2.3 60ft.would gt-40 iron heads put me at least in the 13s?and is there anything else thats easy i could do to put me in the 13s for sure without the heads?
 
Posted by JohnB (Member # 969) on :
 
Drag radials and GEARS. Definitely 13's.
 
Posted by shade- (Member # 298) on :
 
that's an easy 12 second combo with tire and gear
 
Posted by 66 AC COBRA of CA PERFORMANCE (Member # 904) on :
 
quote:
Originally posted by shade-:
that's an easy 12 second combo with tire and gear
and the gt40's obviously
 
Posted by HungryHippo (Member # 537) on :
 
you should hit 13's with some gears and quality street tires
 
Posted by street_illegal_stang (Member # 1554) on :
 
i hit a 13.9 in my friends stock 89 gt with bald bfg street tires and a ped posi 308gears.
its all about the driver [Big Grin]
 
Posted by street_illegal_stang (Member # 1554) on :
 
quote:
Originally posted by street_illegal_stang:
i hit a 13.8 or(8.9 @80 1/8 mile)in my friends stock 89 gt with bald bfg street tires and a peged posi 308gears.
its all about the driver [Big Grin]
14.3?wtf with all thoses bolt ons? man somthing isnt right [Confused]
 
Posted by Blue Oval (Member # 2548) on :
 
i agree
 
Posted by phat50 (Member # 1998) on :
 
i dont know whats wrong,what could it be,i have a light ass coupe and every thing but heads,cam,and gears and my best is a fucking 14.3 with a 2.360ft.i have seen other people with a 2.360ft and bolt-ons and run 14s flat or better.it seems like at the track in second or third if i floor it it wont pull unles i come off the gass a little bit.what could it be?please help anyone??
 
Posted by 50DADDY (Member # 3076) on :
 
Sounds like maybe a little too much fuel or maybe even too much TB and intake for the stock cam.Gears would be a HUGE help to this combo.Try cutting back a little on the fuel pressure.Ive got a coupe also,and with nothing but a race crank pulley,x pipe w/converters,and no AC or pwr steering with stock gears and it runs 13.84@100 and 60fts in the 1.90s with regular street tires.Maybe you need to work on your launch technique.Whats your mile an hour?
 
Posted by phat50 (Member # 1998) on :
 
my mile an hour is 97mph.i dont know if im getting to much fuel cause i still have the stock injectors and my fuel presure is at 40psi with vacume on.could it be my throttle body,i already know my intake is to much for my combo but i want to keep it.i would chang the throttle body if i new it would make a diffrence,would it?
 
Posted by DropTopFox (Member # 1689) on :
 
well with that mile an hour you are capable of 13's I think your problem is in your 60ft. 2.36 is rather high [Frown]
 
Posted by cobraman_1994 (Member # 467) on :
 
get some suspension mods and gears and youll be hitting 1.x 60's all day.
that and get better at launching [Big Grin]
 
Posted by phat50 (Member # 1998) on :
 
what kind of suspension mods should i get?
 
Posted by ON N2O (Member # 2067) on :
 
quote:
Originally posted by phat50:
what kind of suspension mods should i get?
this would help alot
 
Posted by 91 5.0 (Member # 1527) on :
 
quote:
Originally posted by phat50:
what kind of suspension mods should i get?
just get some slicks and worry about suspension later. If you do anything to the suspension, just get the torque boxes re-welded. Youll hook up fine like that.
 




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