tune for yank 4200
tune for yank 4200 am about to have this guy tune my car with a LS1 edit and was wondering where to set the shift point's and do i totally delete TM or just a % of it? my car only has long tube headers,true duals,lid,P&P TB, and the 4200 stall and thats it!
i would delete tm completly, you got a bad *** stall now, why hinder it. i wouldnt as for wot shift tables, youll probally have to play with the tables to get it to shift where you want (i.e., i wanted mine to shift at 6000rpm, its set at 6100 to get this)
A seriously doubt a stock trans will take 6100+ shifts for very long. Of course, it does depend how often you actually wind it out that far.
Just be aware; there are limitations and trade-offs for pushing your stock equipment.
Just be aware; there are limitations and trade-offs for pushing your stock equipment.
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11 Second Club
Joined: May 2003
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From: USA-WEST MONROE, LOUISIANA
I have the same convertor in a stock internal car with all the boltons and I shift mine at 6,100 ( 1st to 2nd) , 6200 (2nd to 3rd) , and the shift point set high to prevent from going in fourth gear at the track. This has worked very well for me. See sig for mods on the car. You do not want to shift the car at 6,800 for a stock car if that is what you have. 
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^^ What they said for shift poitns, i had my TM delted 50%... and i'm more than happy with it, maybe will extend my tranny life a bit...
edit...
FWIW.. i just had a fuddle 4000 stall put in and i didnt touch my shift points and its fine.
edit...
FWIW.. i just had a fuddle 4000 stall put in and i didnt touch my shift points and its fine.
I have the same convertor in a stock internal car with all the boltons and I shift mine at 6,100 ( 1st to 2nd) , 6200 (2nd to 3rd) , and the shift point set high to prevent from going in fourth gear at the track. This has worked very well for me. See sig for mods on the car. You do not want to shift the car at 6,800 for a stock car if that is what you have.
11 Second Club
Joined: May 2003
Posts: 631
Likes: 0
From: USA-WEST MONROE, LOUISIANA
11 Second Club
Joined: May 2003
Posts: 631
Likes: 0
From: USA-WEST MONROE, LOUISIANA
Yes, I would delete TM. Matt D is right about setting your shift points at peak power based on a dyno. However, you can to the track and play with shifts one at a time for best track results. Whatever works for you. I have no local dyno to determine my peak power so I play the other way.
FormerVendor
Joined: Oct 2006
Posts: 3,123
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From: D-F/W
High RPM's = faster wheel speeds = better e.t. and MPH!
That is the exact reason the Pro Stock guys shift at 10,000 to 10,500 rpm's.
Obviously you can't shift above the engines capabilities, but the higher the better.
g
Like I said, it all depends on your peak power. I have seen stock intenal LS1s make peak power at 5800 and others like mine make it at 6200, with only a few mods different between the two. I can't say for sure with your car because I have not seen a dyno graph. I would change it to 6200 to play it safe. I have a Stage 4 FLT 4l60e in my car and know I could spin it to 7500 without a problem. My valvetrain would float before the trans made a hiccup.
im saying you might have to play with the shift timing in order to get what you want, like on the stock tune and a stall, the points were set at 6k but it would actually shift at 5800 so i had to set it to 6100 for it to shift at 6k.
a4's dont like high rpms. id just make the car shift at 6k. just data log a run at the strip to see what rpm its shifting at exactly.
a4's dont like high rpms. id just make the car shift at 6k. just data log a run at the strip to see what rpm its shifting at exactly.