I want to hear some opinons on my combo

[f355bird]

First off the car is a 87 formula firebird
Engine
.030 350 w/10k miles since stock rebuild. It is a 92 chevy truck 4bolt main roller motor.
Edelbrock performer rpm roller cam specs are (234/238 at .050)(.539/.548 lift)(112 lobe sep)(107 int centerline)
Dart iron eagle heads 180cc intake, 64cc combustion chamber, .600 lift springs,7/16 studs and guidplates,angle plug
Performer rpm intake
670 holley street avenger carb
14X3 inch K&N with open face
Msd pro billet distributor
Msd 6al box
Accel 8.8mm wires
Hooker supercomp shorty headers which are 1 5/8
3 inch Y pipe
3 inch hi flow magnaflow cat
3 inch cutout after the cat
3 inch hooker supercomp catback
The exhaust is about to change to true dual 3 inch with 2 chamber flowmaster dumped before the rear axle with no cats.
Transmission
Stock world class T5
B&M short throw ripper shifter
Centerforce dual friction clutch
Rear end
7.5 10 bolt with 500 miles on professional rebuild
it has 3.73 gears in it with all new bearings,races, and seals
stock axles and posi they were in really good shape.
The car weighs 3,220 with 1/2 tank of gas

[ProdigyCustoms]

I would run an Air gap RPM and a Holley 750 with the top milled, or possibly a 830 annular discharge Holley. The carb and intake are way to soft. your gonna need some flow at 6700RPMs or so she will turn. You do not list compression, but I hope you are 10+ or at least very near to that with that much stick in it. We have had similar 350s, with similar compression, cams, induction, etc, deep in the 12s. Your weak link is first the 5 speed as the 87 is not even a World Class unit, and they are not much stronger. if the transmission lives and it hooks hard, the rear will go next. But if you get a pass out of it without breaking, she'll run for a little Pee Wee.

[f355bird]

Its just a street car its been to the dragstrip 2 times in 3 years. FYI the world class was a option in the high end Fbodies in 87 it became standard in 88.
The compression will be between 10-10.5 to 1

[gmachinz]

Okay, well since those F-bodies could only be had with a 305 IF it was a manual car, we're only talking maybe 220-235ft. lbs. Even though they could handle the HO 305 rating of 240 ponies, I doubt along with Frank that your tranny will hold up-but you'll find that out if you get it to hook as Frank already mentioned. -Jabin

[f355bird]

It is going to take me some work to the rear suspension before it is going to hook and i will also need some cheater slicks or some real slicks. My kumho's are not going to hook. This is just my weekend cruising car. Ive had my 355 in the car for about 3 years now and its still holding up im not trying to drive the car into the ground. But the transmission is in the works that will be next. It will probably be getting a tremac tranny. I hope the rear end holds up for awile cuz it is on down my list i figure it should for awile since i just dumped $600 in it 500 miles ago. If the carb ends up being to small i have a 750 double pumper on the car right now i can just reuse that one.

[WELTERRACER]

Very good setup, Except for the carb.. You will run out of fuel with the 670... Go 750DP for sure.. Realistically there is only a 2-5hp difference from the RPM to the AIR GAP.. 1 7/8 headers would yeald another 15hp.

If the tires hook the WEAK 5 speed will brake..

The really weak link is the gears in the rear end... Ive installed 4 sets of gears in mine.. always brake when i do a burnout or hit second gear hard.. I have an auburn carrier and it works well..

Your motor is very close to mine except mine isnt a roller cam.. My car with a TH350 and a 2500 stall ran a best of 12.8 at 109mph CONSISTANTLY in the 1/4 mile with 3.73 gears on 275 40 17 yokahoma streat tires

At that time i had a RPM intake and 750 vacume secondary and a very large COMP cam with 250/255 duration and .519 .523 lift with roller tiped rockers.. and 1 5/8 headers running threw the exhuast..(car weights 3800lbs with driver)

The roller cam will make alot more lowend torque so i would think your car should run mid 12s easy..

[f355bird]

Hey guys i appreciate the comments. Im working on getting the whole drivetrain sound just doing little by little unless something breaks. But i only street drive so i figure it will last awile untill i can buy better stuff. As for the carb i have both the 750dp and 670 avenger i figured i would try both and see which one works better. Whatever this motor puts out is better than the 250 horse it has right now.