B/PS lt1 formula

[russellauto1]

THANKS kenny, That is some Great information. I was kinda looking at the same converter, but wasn't sure of the stall. I was leaning towards 4.10 or 4.56. I am still gonna use 7.5 rear axle but weld axle tubes, rear support and some other modds that some of the mustang guys do. As far as the exhaust, right now I have shorty headers with a aftermarket y pipe. Gonna do some research on what I can do there. I think I am going to leave a/c on cr for now. Just so I can make weight and cool off. What wheels are you going to run? I am unsure of the rear back spacing I should get. But I may get some 16" so I can put drag radials on the rear. Thanks for the info from Everyone and Keep it coming. It makes me think a little hard!!!

[ss3011]

GM sells a A/C delete pulley that replaces the A/C compressor. PN 10115875 .

[Mike Taylor 3601]

russelauto1
I have converter you may be interested in,is vigilante was in LS car w/4L60E,I think will fit 700R4 also, they rate it 3800-4200 is a non lock up has maybe 15 street miles since new,still has white grease on neck from install. can look for serial # if want more info.
will sell for 375.00 if interested call me 606-678-3039 shop 606 278 0601 cell
Mike Taylor 3601

[KennyAnderson]

Originally Posted by russellauto1

THANKS kenny, That is some Great information. I was kinda looking at the same converter, but wasn't sure of the stall. I was leaning towards 4.10 or 4.56. I am still gonna use 7.5 rear axle but weld axle tubes, rear support and some other modds that some of the mustang guys do. As far as the exhaust, right now I have shorty headers with a aftermarket y pipe. Gonna do some research on what I can do there. I think I am going to leave a/c on cr for now. Just so I can make weight and cool off. What wheels are you going to run? I am unsure of the rear back spacing I should get. But I may get some 16" so I can put drag radials on the rear. Thanks for the info from Everyone and Keep it coming. It makes me think a little hard!!!

Hey Aaron, You are welcome and I'm excited I'm not alone in this endeavor! I bought some 15 x 8 Weld Pro Stars off a member here. Have a 5.5" backspacing and fit perfect. A 15 x 10 with a 7.5" backspace also fits. I used some regular 15 x 4 frontrunners on the front although my wheels had 27" Goodyears and they look like tractor tires! LOL! Going to get some 25"-26". On the rear I have MT 275 street radials. Great tires and they hook really good with this setup. The front wheels will require a 5/16" spacer to clear the calipers. My rear calipers were already ground on to fit the 15's. 15's are nice cause there are some X275 guys local and I can get their takeoffs for cheap. I don't think you will need to keep anything to make weight, in fact I think you'll need to gut everything possible. Your minimum weight in B/PS will be 3005lbs with you on board. I'm pretty sure it would be impossible to get that light with all the pure stock required stuff on there. C/PS would be 3320 lbs. Im shooting for D/PS with a minimum race weight of 3635. As it is my car with my fat *** in it is quite a bit over that. Im nervous about the factory rear. I have some buds who are Camaro guru's. All of em said the factory rear will start giving me fits when we get down into the 1.70/60/50 shorty times. This car might eventually be a crate motor car so although I don't want to spend the coin right now, a 12 bolt is in its future. Look up LS1tech.com. More Camaro/Firebird info than you will ever need. One thing that I found REALLY useful, in the racing section there is a sticky for all weight reduction parts and just about everything you can gut and what it weighs. Get BUSY Bro!

[KennyAnderson]

Originally Posted by KennyAnderson

Hey Aaron, You are welcome and I'm excited I'm not alone in this endeavor! I bought some 15 x 8 Weld Pro Stars off a member here. Have a 5.5" backspacing and fit perfect. A 15 x 10 with a 7.5" backspace also fits. I used some regular 15 x 4 frontrunners on the front although my wheels had 27" Goodyears and they look like tractor tires! LOL! Going to get some 25"-26". On the rear I have MT 275 street radials. Great tires and they hook really good with this setup. The front wheels will require a 5/16" spacer to clear the calipers. My rear calipers were already ground on to fit the 15's. 15's are nice cause there are some X275 guys local and I can get their takeoffs for cheap. I don't think you will need to keep anything to make weight, in fact I think you'll need to gut everything possible. Your minimum weight in B/PS will be 3005lbs with you on board. I'm pretty sure it would be impossible to get that light with all the pure stock required stuff on there. C/PS would be 3320 lbs. Im shooting for D/PS with a minimum race weight of 3635. As it is my car with my fat *** in it is quite a bit over that. Im nervous about the factory rear. I have some buds who are Camaro guru's. All of em said the factory rear will start giving me fits when we get down into the 1.70/60/50 shorty times. This car might eventually be a crate motor car so although I don't want to spend the coin right now, a 12 bolt is in its future. Look up LS1tech.com. More Camaro/Firebird info than you will ever need. One thing that I found REALLY useful, in the racing section there is a sticky for all weight reduction parts and just about everything you can gut and what it weighs. Get BUSY Bro!

PS; Do some homework before you buy a converter, I was looking at a couple used Yank units but all were for an LS motor. Was told x2 that an LS converter wouldn't fit a LT1. Pad spacing or ??? different.

[Mark Yacavone]

Originally Posted by KennyAnderson

PS; Do some homework before you buy a converter, I was looking at a couple used Yank units but all were for an LS motor. Was told x2 that an LS converter wouldn't fit a LT1. Pad spacing or ??? different.

The LS converter has a much higher overall height, plus the bolt pattern is larger.

You can adapt the LT1 converter to an LS, but not the other way around. LS is too long to retro fit it .

You can buy an aftermarket flex plate or drill the LS one to the early b.p. and extend the pilot to use an early converter with an LS .

[gbur]

Originally Posted by Mark Yacavone

The LS converter has a much higher overall height, plus the bolt pattern is larger.

You can adapt the LT1 converter to an LS, but not the other way around. LS is too long to retro fit it .

You can buy an aftermarket flex plate or drill the LS one to the early b.p. and extend the pilot to use an early converter with an LS .

so what is the difference of 4L60 and turbo 350 spline count

[Mark Yacavone]

Originally Posted by gbur

so what is the difference of 4L60 and turbo 350 spline count

No difference in count ..both 30 spline ..Difference is in the length
Stator support shaft...all the same in modern GM transmissions ..Again, different lengths and placement

[gbur]

Originally Posted by Mark Yacavone

No difference in count ..both 30 spline ..Difference is in the length
Stator support shaft...all the same in modern GM transmissions ..Again, different lengths and placement

So approx how much pilot extension and most4L60 and 700 have what some would call an enertia ring, some having dual bolt pattern. Beleive my LS flywheel is dual pattern also

[gbur]

Originally Posted by Mark Yacavone

No difference in count ..both 30 spline ..Difference is in the length
Stator support shaft...all the same in modern GM transmissions ..Again, different lengths and placement

But maybe for your info , convertor hub dia is .130 difference