CLASS RACER FORUM - B/PS lt1 formula

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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

Re: B/PS lt1 formula

Quote:

Originally Posted by russellauto1 (Post 403614)

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

Re: B/PS lt1 formula

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

Re: B/PS lt1 formula

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

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.

Re: B/PS lt1 formula

Quote:

Originally Posted by russellauto1 (Post 403625)

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

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.

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 ?

Re: B/PS lt1 formula

Quote:

Originally Posted by russellauto1 (Post 403625)

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.

Re: B/PS lt1 formula

Quote:

Originally Posted by ss3011 (Post 403636)

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