60 ft help

gtcobra302 · Feb 11, 2006

I need 60 ft help. I have a 1989 5 speed GT. It has a trick flow intake manifold, 70 mm throttle body and egr spacer, 73 mm mass air sensor, cold air intake, k and n filter, 24 lb injectors, regulator, 255 lph fuel pump, headers, h pipe, flowmasters, f 303 cam, fresh rebuild, flex fan, msd 6al box, cap, rotor, wires and coil, 3.55 gears, mega bit jr lowers, frame connectors, upper and lower front strut bars, zoom clutch, tri axel shifter, Im running mcreary bias ply tires at the track. I best I ran was the wednesday night it was a 13.9 with a 2.1 60 ft, help. Could the f 303 cam not be coming alive soon enough, they say it is a blower cam. Any help would be great. It feels like it is hooking up.

willys1 · Feb 11, 2006

A 2.1 60ft with street tires is not that bad. But it sounds like your spinning off the line.A set of DR's or slicks will solve your problems.. I run Nitto DR's and run 1.8 60ft's.With your mods 1.7 should be a piece of cake with traction.And if you get your 60ft's down to 1.7 or lower you will be knocking on high 12's door in the 1/4

gtcobra302 · Feb 11, 2006

no, mcreary bias ply tires not street tires, they are as good as bfg's and nittos for about $50 dollars cheaper each.

willys1 · Feb 11, 2006

gtcobra302 said:
no, mcreary bias ply tires not street tires, they are as good as bfg's and nittos for about $50 dollars cheaper each.

Hows your wheel spin off the line?

legalize420 · Feb 11, 2006

what do you launch at? are you spinnging the tires? just out of curiosity, what was your mph?

willys1 · Feb 11, 2006

legalize420 said:
what do you launch at? are you spinnging the tires? just out of curiosity, what was your mph?

with his mods he must have wheel spin with a 2.1 60ft.

rsw007 · Feb 11, 2006

heads? that cam is to big for stock heads. your losing your torque down low. as far as suspension tuning and info, here's all you need to know. www.baselinesuspensions.com

p.s. i cut my 1.69 60ft's "n/a" on those mccreary g60's so they will hook. i ran 15-17psi in them.

gtcobra302 · Feb 11, 2006

They are gt40 irons, mild port and polish. that is what I thought that the cam was too much, what do you reccomend? Are you running that pro launch kit on that web site? I would also like to know what is done to your car to enable you to 12.88 without power adder. That is what I am going for. I will understand if it is a secret.

snoboardcore · Feb 11, 2006

H/C/I and some gears will put you in the 12's

willys1 · Feb 11, 2006

gtcobra302 said:
They are gt40 irons, mild port and polish. that is what I thought that the cam was too much, what do you reccomend? Are you running that pro launch kit on that web site? I would also like to know what is done to your car to enable you to 12.88 without power adder. That is what I am going for. I will understand if it is a secret.

RSW has done his homework with suspension.He has the bigger valves in the stock heads abd I believe he's lightened it up a bit. Check out his launch in his avatar

rsw007 · Feb 11, 2006

willys1 said:
RSW has done his homework with suspension.He has the bigger valves in the stock heads abd I believe he's lightened it up a bit. Check out his launch in his avatar

stock untouched heads, cam and intake. the valve covers and intake have never been off my car.

i done my suspension before kevin started making those upper arms, so no, i dont have his control arms. but i used all his info in the articles at the top of the page to set up my car. i have adjustable uppers and solid lowers with lowering springs in rear 1/2 coil cut out, and moroso drag springs in front with 2 coils cut out.

ninety15.0 · Feb 11, 2006

What RPM were u launching at and how were you letting the clutch out? (assuming its a standard) and what tire pressure were u running? also what was your 1/4 mile speed?

willys1 · Feb 11, 2006

rsw007 said:
stock untouched heads, cam and intake. the valve covers and intake have never been off my car.

i done my suspension before kevin started making those upper arms, so no, i dont have his control arms. but i used all his info in the articles at the top of the page to set up my car. i have adjustable uppers and solid lowers with lowering springs in rear 1/2 coil cut out, and moroso drag springs in front with 2 coils cut out.

untouched heads?

rsw007 · Feb 11, 2006

willys1 said:
untouched heads?

yes, you are thinking of 25thmustang i think.
heck i still have the stock stamped steel rockers. covers never been off the heads.

IntenseBlue · Feb 11, 2006

It's a nitrous car.

He could be launching low enough to bog it. Especially with non-stock heads and cam. I took my car to the track one time with pony rims and about 1/4 tread left and the best 60ft I could do was a 2.1 bogging the **** out of the engine.

willys1 · Feb 11, 2006

rsw007 said:
yes, you are thinking of 25thmustang i think.
heck i still have the stock stamped steel rockers. covers never been off the heads.

ahhhh,I dont think so.You told me "yourself" about the bigger valves!!

axeman · Feb 11, 2006

rsw007, have you noticed much difference in traction when adjusting pinion angle? I've tried from 0 to -4* and with no change in results. Next up for me is some adjustable front shocks I guess.

rsw007 · Feb 11, 2006

willys1 said:
ahhhh,I dont think so.You told me "yourself" about the bigger valves!!

NO your thinking of 25thmustang or brian15. my motor is stock from intake to oil pan except adj. fuel reg.

rsw007 · Feb 11, 2006

havent checked it in years. i think i set it at neg 3. i dont even have a rear swaybar and it still leaves straight it is weird how this car hooks as you can see in the videos in my sig.

gtcobra302 · Feb 11, 2006

I guess my question is, is the f303 cam too much for a set of gt40 iron heads, stock bottom end, stock lifters, pushrods and rocker arms, with the pars listed above. Lamotta says that it is a blower cam, and the lobe seperation is wrong for a n/a car. No nitrous, launching about 5000 rpm's, any more and it blows the g60's away, any less it bogs , 20 psi both times. I ran a 2.0 60 ft time and the car went 14.2 at 98, and a 60 ft time of 2.1 and the car went 13.9 at 99. I am thinking of an e303. The uppers are stock, and the lowers are mega bit jr's, with a 3.55 gear, and aluminum drive shaft. The tires aren't spinning, it is hooking up better than it ever has with the g60's.

60 ft help

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