whats the differance between my gt and my 305 auto fired bird drivetrainwise?
08-03-2007, 12:11 AM
#11
1st Gear Member
Join Date: Jun 2007
Location:
Posts: 67
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
well it has often been rumored that the gm 305 was actually a little underrated mainly on torque. the long stroke and small bore was actually the grounds for more of a truck engine, in thus you would have way more torque then hp. so your 302 might actually not have that much torque over it.
08-03-2007, 12:16 AM
#12
5th Gear Member
Thread Starter
Join Date: Oct 2006
Posts: 2,424
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
well 240ftlbs is alot at 2400rpm so yeah, it takes off so hard and i know the car is just beat, it has to have 200plus k on it smokes when i first start cus valve guides or something suck
ORIGINAL: superman5.0
well it has often been rumored that the gm 305 was actually a little underrated mainly on torque. the long stroke and small bore was actually the grounds for more of a truck engine, in thus you would have way more torque then hp. so your 302 might actually not have that much torque over it.
well it has often been rumored that the gm 305 was actually a little underrated mainly on torque. the long stroke and small bore was actually the grounds for more of a truck engine, in thus you would have way more torque then hp. so your 302 might actually not have that much torque over it.
08-03-2007, 12:26 AM
#13
5th Gear Member
Join Date: Dec 2006
Location: louisiana
Posts: 2,763
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
my friend has a 92 bird, 305. its got blowby so i told him he needs a rebuild, he wants to put in a 350, what would it cost to make the 305 fast? pm me plz
08-03-2007, 07:57 AM
#15
6th Gear Member
Join Date: Feb 2006
Location: Howard City, MI
Posts: 5,956
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
If you can't chirp going into second, you arn't shifting hard enough......bring it over and let me drive...I will show you what you can do
I bet I can get rubber in third too.
I bet I can get rubber in third too.
08-03-2007, 07:57 AM
#16
4th Gear Member
Join Date: Jan 2007
Location:
Posts: 1,999
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
I know exactly what you are talking about 86GT.
Not all cars are created equal and you are expecting a 14 sec Mustang to "exhibit" more drama than a 16 sec Firebird.
Too many other factors and they mostly favour the Firebird in the show off department.
Those GM automatic transmission have a solid shift. Even some regular GM trucks will chirp 2nd. They have a deep 1st gear also so the rpm drop into second is big. This means something must give. RPM has to sharply fall down OR trans has to slip OR tires must speed up. In the case of the Firebird, the tires speed up, hence your chirp into 2nd.
Suspension design is another overlooked factor. Some cars "load" the tires as you apply torque, some "unload".
Ever watch a Mopar musclecar launch? The body usually rises about 2" but what is really happening is the tires are going down 4". Major traction. Cars like late early 80's GM, Monte carlo, Gran Prix etc. They unload the drive tires when you apply torque, that's why those cars will endlessly lay down rubber, even with only 200hp.
Lastly, your Mustang probably is due for a clutch. My 93 is pretty stock with a strong clutch. I have enough traction with 235 Dunlop radials to run a mid 13 but at the same time it will often chirp 2nd and sometimes 3rd.
Not all cars are created equal and you are expecting a 14 sec Mustang to "exhibit" more drama than a 16 sec Firebird.
Too many other factors and they mostly favour the Firebird in the show off department.
Those GM automatic transmission have a solid shift. Even some regular GM trucks will chirp 2nd. They have a deep 1st gear also so the rpm drop into second is big. This means something must give. RPM has to sharply fall down OR trans has to slip OR tires must speed up. In the case of the Firebird, the tires speed up, hence your chirp into 2nd.
Suspension design is another overlooked factor. Some cars "load" the tires as you apply torque, some "unload".
Ever watch a Mopar musclecar launch? The body usually rises about 2" but what is really happening is the tires are going down 4". Major traction. Cars like late early 80's GM, Monte carlo, Gran Prix etc. They unload the drive tires when you apply torque, that's why those cars will endlessly lay down rubber, even with only 200hp.
Lastly, your Mustang probably is due for a clutch. My 93 is pretty stock with a strong clutch. I have enough traction with 235 Dunlop radials to run a mid 13 but at the same time it will often chirp 2nd and sometimes 3rd.
08-03-2007, 11:50 PM
#17
4th Gear Member
Join Date: Nov 2006
Location:
Posts: 1,016
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
There was three of us in a 91-92 firebird witha 305 tbi and 5 speed, we tached the motor out and did a clutch drop, and the car just bogged. It wasn't our car though 
. The car felt fast but then when we were racing it in out trucks at the time, both a 91 gmc sierra and a 86 F150 both pulled on it hard.
. The car felt fast but then when we were racing it in out trucks at the time, both a 91 gmc sierra and a 86 F150 both pulled on it hard.
08-03-2007, 11:55 PM
#18
5th Gear Member
Thread Starter
Join Date: Oct 2006
Posts: 2,424
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
yeah i think my clutch may have seen too much abuse lately but that firebird amazes me cus its sure not as fast but man it will put u back in second, the mustang will too if u run it hard as u can, but second never chirps so i think im due for a clutch and prolly a rebuild sooner than later. the thing rips in second i love second gear on the stang just rip azz gear to drop into at 30mph and put the hammer down
but that firebird amazes me cus its sure not as fast but man it will put u back in second, the mustang will too if u run it hard as u can, but second never chirps so i think im due for a clutch and prolly a rebuild sooner than later. the thing rips in second i love second gear on the stang just rip azz gear to drop into at 30mph and put the hammer down
ORIGINAL: Jfsram
I know exactly what you are talking about 86GT.
Not all cars are created equal and you are expecting a 14 sec Mustang to "exhibit" more drama than a 16 sec Firebird.
Too many other factors and they mostly favour the Firebird in the show off department.
Those GM automatic transmission have a solid shift. Even some regular GM trucks will chirp 2nd. They have a deep 1st gear also so the rpm drop into second is big. This means something must give. RPM has to sharply fall down OR trans has to slip OR tires must speed up. In the case of the Firebird, the tires speed up, hence your chirp into 2nd.
Suspension design is another overlooked factor. Some cars "load" the tires as you apply torque, some "unload".
Ever watch a Mopar musclecar launch? The body usually rises about 2" but what is really happening is the tires are going down 4". Major traction. Cars like late early 80's GM, Monte carlo, Gran Prix etc. They unload the drive tires when you apply torque, that's why those cars will endlessly lay down rubber, even with only 200hp.
Lastly, your Mustang probably is due for a clutch. My 93 is pretty stock with a strong clutch. I have enough traction with 235 Dunlop radials to run a mid 13 but at the same time it will often chirp 2nd and sometimes 3rd.
I know exactly what you are talking about 86GT.
Not all cars are created equal and you are expecting a 14 sec Mustang to "exhibit" more drama than a 16 sec Firebird.
Too many other factors and they mostly favour the Firebird in the show off department.
Those GM automatic transmission have a solid shift. Even some regular GM trucks will chirp 2nd. They have a deep 1st gear also so the rpm drop into second is big. This means something must give. RPM has to sharply fall down OR trans has to slip OR tires must speed up. In the case of the Firebird, the tires speed up, hence your chirp into 2nd.
Suspension design is another overlooked factor. Some cars "load" the tires as you apply torque, some "unload".
Ever watch a Mopar musclecar launch? The body usually rises about 2" but what is really happening is the tires are going down 4". Major traction. Cars like late early 80's GM, Monte carlo, Gran Prix etc. They unload the drive tires when you apply torque, that's why those cars will endlessly lay down rubber, even with only 200hp.
Lastly, your Mustang probably is due for a clutch. My 93 is pretty stock with a strong clutch. I have enough traction with 235 Dunlop radials to run a mid 13 but at the same time it will often chirp 2nd and sometimes 3rd.
08-04-2007, 06:13 PM
#19
1st Gear Member
Join Date: May 2007
Location:
Posts: 89
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
You said the stang has 3.08's.. Thats pretty hard to get 2nd to chirp if you have some fairly decent tires. After putting 3.55's in it made it easier for me, but its still not really easy to do.
08-04-2007, 06:24 PM
#20
3rd Gear Member
Join Date: Jun 2006
Location: oklahoma
Posts: 643
RE: whats the differance between my gt and my 305 auto fired bird drivetrainwise?
i had a 93 5.0(until a tree rearended me a month ago) but when i first got it it was bone stock with 3.08 and at the track it would run 14.6 at 98 mph and i would get a 2nd and even sometimes if i was powershiftin a 3rd gear chirp, but now my 89 i got a month ago second gear gets sideways ifs its any kinda wet third is pretty hairy too oh it has 3.73s in it. you shouldnt have a prob getting it to chirp the tires in second.