opinions 1/4 mile times

[speedy66]

My motor specs are in my sig
I am running a c4.. 3.00 gears (open) and 275/60/r15 tires

what you guys think I will run? I am hoping for mid 13's

 

[jesserose17]

Having an open rear may mean less traction and also 3.00 is kind of tall for drag racing... I am guessing low 14's. Good luck and let us know what are your times!

 

[John Z]

I'll say 10.5 seconds but only because I want people to feel good after reading my post. Just use my number and never take the car to the strip (and never never never street race) and you will feel good for a longtime . If you ignore the advice and take the car to the strip, be prepared to be disappointed.

 

[BobV]

Sorry, but with that rearend, I'll go 15.5.

Get a two-striper and some high 3 gears, I'd go low 14's.

 

[Edbert]

I'd say 15.25, but I don't know the specs on these items "FMS B-Cam, Mildly ported E-7s". What are the valve/port sizes on those heads, are they aluminum? What are the specs on that cam, is it hydraulic roller or solid? Have you done anything to imrove the shifting of the C4? What about the suspension?

 

[speedy66]

only reason why i say 13's is I have seen a similar set up on a 67 and he ran 13.9

b cam specs are 284*, .480" lift Hyd roller
C4 has a street shift improver kit.. nothing radical
e-7s are cast iron.. I believe, and also the valve/port sizes are unknown to me.. I got the heads in a trade

gears I plan on going with 3.55s

 

[speedy66]

suspesnion is.. 620lb eiback drop coils in front.. keyb gas adjust shocks.. no swaybar..

rear. gabriel airshocks.. very week and old rear leaf springs/

 

[mp67]

Mid 13's is a lofty goal with that rearend. Like someone else said, not enough info on motor combo(cam specs, compression ratio, etcc.) to make a good call.

Ok, you posted as I was writing this on cam specs. If you have the 3.55 in before you run, that is a good step in the right direction. Is it still going to be open? Could limit traction. If those are stock E7's, I would still say no on mid 13's. Probably mid 14's, but hey, now is your chance to prove us wrong.

 

[speedy66]

ok more specs on the cam

lobe is 112.. duration at .050 is 224
comp ration is 10:1

I know the heads are gasket matched.. and the ports have been opened and smoothed.. not sure what else there is..

 

[jesserose17]

rear. gabriel airshocks.. very week and old rear leaf springs/

I would suggest replacing & upgrade the rear leaf springs to 5 leaf, otherwise you may have severe wheelhop. I can vouch for this, I used to have real bad rear wheel hop with my original 4 leaf springs... and I have replaced it with 5 leaf, no more wheelhop!

 

['69Stang]

Mid 14's....

 

[SandSprite]

14's if u can get it to hook. Wheel hop will probably be your weakness (as well as your gear ratio). as is, id bet high 14's- low 15's.

 

[12sec67]

high 14's with wheellhop and a ugly 2.3+ for a 60'

 

[speedy66]

never had wheel hop yet.. goofen around on the street.. but mainly doing from idle launches...

the 275/60/r15 is a bit hard to hop with 3.0 gears.

while I am at it.. what would be a good rpm to launch at?