quarter mile times
 

ok so heres the deal... my 1977 vette was factory rated at 180 hp and 190 ft. lbs. with a 14.sumthin quarter mile...now i have almost 400 hp and still unknown torque being pushed thrugh my little 350 and i've shaved about 200 lbs off of it. i was wondering if anyone would be able to swag my quarter mile time with a 3:73-1 rearend and some fatty ass drag radials. and i wanna see some of yalls timesor stories about burning a ricer or whatever...all you old people seem to have interesting stories. lol

RE: quarter mile times
 

Hey,What do you mean OLD!!!That is a relative term.I told my wife that I refuse to grow up!!!Of course she just shakes her head and walks away.

RE: quarter mile times
 

I live my life a quarter mile at a time. ;)

RE: quarter mile times
 

I've heard that saying before.It hurts trying to get the old brain activehttps://www.corvetteforums.com/micons/m13.gif. Oh ya,The Fast and the furious,Vin Diesel and his dads charger.Boy that hurt,got to go rest the old brain now.https://www.corvetteforums.com/micons/m10.gifHave fun,take the old vette out for a burn for me.Wont have mine mobile till at least the summer if I'm lucky.Talk at ya later.

RE: quarter mile times
 

Try this to give yourself a ball park idea ==>http://www.smokemup.com/auto_math/index.php
Not terribly accurate, .....but better than nothing.
Only way to tell is take it to the track.

Ron

RE: quarter mile times
 

OLD im only seventeen and i already have stories......

ive never ran my car at the track but i have smashed on a few honda's around town

RE: quarter mile times
 

It depends what and where 400 Hp was measured, but I will try a guess.
If you have a dyno-verified400 RWHP -- it was tested on a Dynojet or Mustang chassis dyno to that number --then the car shouldbe capable of somewherein the high to mid 12s if the suspension will let the slicks put the power to the ground (I doubt the stock suspension can do that).

If you have a carburated crate engine rated at "400 HP" you probably have about 275-300 RWHP (with a 4-speed, considerably less with the auto) and I would guess 1/4 mile should be in the high 13s with a manual 4-speed and a 3.73 and slicks, maybe mid 13s depending on if and how well the suspension can handle all the extra power and the slicks. If the 400 Hp is measured on an actual engine dyno (rather than at the rear wheels), then you probably have 350 RWHP and a mid 13 1/4 mile time.

If you have the original engine and are estimating the HP based on on the cam, headers, ported heads, etc. you have added toit -- essentially adding up all the HP gains you expect, etc., I can't guess, as its hard to really estimate what an engine like that will really do -- often the mods don't work well together, other times they do, most often they work well in one RPM band and not another. Until you have a dyno test its hard to tell:it could be anywhere from a bit faster to much faster than stock.In my experience, it is very difficult toget over about275 RWHP and street driveability from that vintage of 350 while sticking with a carburator, without a lot of real attention to detail, careful dyno and track fussing and experimentation with compatibility of mods, and lots of time to getjust the right balance of jetting, and ignition initial and advance curve tuning.

RE: quarter mile times
 

Speaking of hurting, how about the GTO in XXX?

RE: quarter mile times
 

I agree with you it's very hard to get the power down to the ground with stock suspension.
I have 3:33 gears with a 4 speed in my 74 and it breaks loosemost of the time when I punch it.
I am pushing approx 250hp @ the flywheel.
I also have a 69 Camaro with approx 440hp @ the flywheel and the only way I can race it is from a roll.
With slicks the body and frame etc won't hold up with this kind of power and 425 pounds of torque.
Last time I came off the line with drag radials @ 3500rpm's on it I did a 180 and crapped my shorts.
Schoon