B/PS lt1 formula

russellauto1 · 10-09-2013, 04:20 PM

I am building a 93 formula with an lt1 for pure stock ihra and I am looking for some opinions on Torque converter and rear gear for that combination. As far as the converter, What stall range should I be in? RPM range of the engine is probally only 5500. Advantages, If any, of having the lockup disc in the converter. The transmission is a 4l60. What rear gear is suggested? I was thinking of a 4.10 or 4.56 with 28" tall tires. . Thanks

Dan Fahey · 10-09-2013, 04:37 PM

Quote:

Originally Posted by russellauto1

I am building a 93 formula with an lt1 for pure stock ihra and I am looking for some opinions on Torque converter and rear gear for that combination. As far as the converter, What stall range should I be in? RPM range of the engine is probally only 5500. Advantages, If any, of having the lockup disc in the converter. The transmission is a 4l60. What rear gear is suggested? I was thinking of a 4.10 or 4.56 with 28" tall tires. . Thanks

Well you came to the RIGHT Place..

Another person is preparing a 93 Camaro on Class Racer.
Bullet has a Pure Stock Cam and Spring Package that will pass tech.
Even that it is about done by 6000rpm..

I am adding a Yank PT 4200 replacing my Yank SS3800 Converter.
Since my car is driven to the meets they are locking converters.

4.65 gearing with 28 inch would work well.
Would spend the money to get a complete Moser Rear.
The small 7.5 inch rear is ok at stock power levels.

Send pictures of your ride and will post it on the PhotoGallery.

Dan

russellauto1 · 10-09-2013, 04:49 PM

Are you going to be tuning the ecm also? I think I am going to get tuner cats ?

Ed Wright · 10-09-2013, 05:09 PM

The '93 has a removable chip. You would also need a device programmer, and eraser.

russellauto1 · 10-09-2013, 06:01 PM

I guess the way I am reading the website, It comes as a package with the burner, Tuner program, and everything that is needed.

Dan Fahey · 10-09-2013, 06:24 PM

Quote:

Originally Posted by russellauto1

I guess the way I am reading the website, It comes as a package with the burner, Tuner program, and everything that is needed.

Have TunerCat for 94 and 95 PCM..

Also use Byran Herter at PCMforLess.

They have a Dyno Facility near Quaker in Ohio and Farmington in North Carolina.

May want to ping Ed Wright on the Class Racer

D

chris ok · 10-09-2013, 07:03 PM

I'd speak to the man Ed Wright who posted above.
He is very knowledgeable from what I have read here.

ss3011 · 10-09-2013, 07:35 PM

1993 was the only year that had a 700-R4 (4L60) but not the "e" version. Also the engine did not use a MAF sensor. When did IHRA drop the requirement that the correct part number camshaft be used ?

Ed Wright · 10-09-2013, 08:08 PM

Quote:

Originally Posted by russellauto1

I guess the way I am reading the website, It comes as a package with the burner, Tuner program, and everything that is needed.

They may very well have a package like that.

Dan Fahey · 10-09-2013, 10:11 PM

Quote:

Originally Posted by ss3011

1993 was the only year that had a 700-R4 (4L60) but not the "e" version. Also the engine did not use a MAF sensor. When did IHRA drop the requirement that the correct part number camshaft be used ?

I do not know that answer on the camshaft.
Mike Baker confirmed the rule in the IHRA book.
And model cam for my Impala SS

D

10-09-2013, 04:20 PM	#1
russellauto1 Member Join Date: Oct 2008 Posts: 149 Likes: 2 Liked 35 Times in 6 Posts	B/PS lt1 formula I am building a 93 formula with an lt1 for pure stock ihra and I am looking for some opinions on Torque converter and rear gear for that combination. As far as the converter, What stall range should I be in? RPM range of the engine is probally only 5500. Advantages, If any, of having the lockup disc in the converter. The transmission is a 4l60. What rear gear is suggested? I was thinking of a 4.10 or 4.56 with 28" tall tires. . Thanks

10-09-2013, 04:49 PM	#3
russellauto1 Member Join Date: Oct 2008 Posts: 149 Likes: 2 Liked 35 Times in 6 Posts	Re: B/PS lt1 formula Are you going to be tuning the ecm also? I think I am going to get tuner cats ?

10-09-2013, 05:09 PM	#4
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: B/PS lt1 formula The '93 has a removable chip. You would also need a device programmer, and eraser. __________________ Ed Wright 4156 SS/JA

10-09-2013, 06:01 PM	#5
russellauto1 Member Join Date: Oct 2008 Posts: 149 Likes: 2 Liked 35 Times in 6 Posts	Re: B/PS lt1 formula I guess the way I am reading the website, It comes as a package with the burner, Tuner program, and everything that is needed.

10-09-2013, 07:03 PM	#7
chris ok Senior Member Join Date: Jul 2002 Location: Long Island, New york Posts: 592 Likes: 131 Liked 46 Times in 29 Posts	Re: B/PS lt1 formula I'd speak to the man Ed Wright who posted above. He is very knowledgeable from what I have read here.

10-09-2013, 07:35 PM	#8
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 909 Likes: 70 Liked 239 Times in 114 Posts	Re: B/PS lt1 formula 1993 was the only year that had a 700-R4 (4L60) but not the "e" version. Also the engine did not use a MAF sensor. When did IHRA drop the requirement that the correct part number camshaft be used ?