[jcsbrotha]

I am having trouble getting off the line. When my 66 stang is warmed up, I dont have trouble with it dying, but I have major problems getting off the line. It is an auto tranny (C4) but it has been rebuilt and beefed up by a local well-known tranny shop who built it for power and speed. I have a rebuilt 289 that has been bored out a little bigger and placed a Shelby-similar Cam in it. The engine should not have any problems getting off of the line, yet I am not able to even get a squeak from it off the line. It has no guts off the line. I have an 8inch rear and although I would like a 9 inch those are not easy or cheap to come by. Regardless I should still get something off the line. Any suggestions?

[v8only]

the vintage 289 mustangs had about 150hp. Are you running heads and intake/carb/exhaust with that cam?? It could even be hurting more than helping.
A stock 289 doesn't really have enough power to spin the wheels. I remember a 66 mustang that we had, and my brother beating it in his 91 escort

[jcsbrotha]

I am running Edelbrock Performer series intake with packaged Performer cam and lifters... Exhaust- dual of course with tri-y headers

[bigm71]

If you are running all that on stock heads you are probably hurting your self. It's like trying to squeeze more stuff ( gas and air)through the same size hole ( heads ). The biggest and best thing you will ever do performance wise is aftermarket heads. I could hardly turn them over before now I'm looking into positive traction rearends because I can't hardly stop spinning them.

[cindys_sn95]

needs a little gear and a little converter...it really needs heads, but, the gear and converter will help big time.....

[jcsbrotha]

so my heads are really posing that much of a problem? what heads do you recommend that I could get for a reasonable price, or what heads should i search for that will swap to my mustang from another model? I realize BOSS302 heads or 351W...right? But good luck with those, right?

[v8only]

they're a bottleneck...you've opened up everything else but them.

research gt40 heads and gt40p heads...great bang for the buck. Not sure how they work on older motors though

[cindys_sn95]

if you want to stay cast iron go windsor jrs. if aluminum go edelbrock e- streets.

[jcsbrotha]

Originally Posted by cindys_sn95

if you want to stay cast iron go windsor jrs. if aluminum go edelbrock e- streets.

I would like to stay with cast iron... i know they are not as light as aluminum but I want to make sure they are sturdy Any idea of best place to buy from for those windsor jr's?

[65redcoupe]

mine spin pretty damn easy....my mom drove it once before i could drive stick well and spun the tires leaving my sisters friends house...granite it is stick shift she drives stick on a daily basis and was extremely embarrased doing that...( i laughed) and i have merely a stock car with a 4bbl and performer intake manifold

[cindys_sn95]

jegs has them, 440 each. part #955-053030-1. very good street head.

[jcsbrotha]

Thank you all who helped me with this. All i have to do now is wait until i have the cash to get those heads!