4000 or 4500 stall for this combo?

Transmission to Rear-end

Moderator: Team

Post Reply

What stall will E.T./MPH better?

4000 Stall?
6
55%
4500 Stall?
5
45%
 
Total votes: 11

camaro_fever68
New Member
New Member
Posts: 41
Joined: Fri Jun 30, 2006 10:22 pm
Location: Baton Rouge

4000 or 4500 stall for this combo?

Post by camaro_fever68 » Mon Nov 06, 2006 8:34 am

'69 Chevelle Full body/interior 3800lbs???

385cid 10.3:1 CR
Brodix 200cc 2.02/1.60
Performer RPM Air-Gap 1" Super Sucker Holley 750
Erson 278/286 238/244 .555/.555 108lsa/104icl 1.6in/1.5ex Solid Roller
th-350 4.11 gear 27" tire
1-5/8 Heddman 3" Pipe to 3" Flowmaster 40 series

I need a some more stall for my combo. I have a 3000 that flashes 3200, but my engine really pulls better from 4200. I can feel the difference as the power comes up. I do drive some on the street but a good stall with a tight stator will work at 4500. I just don't want to "over stall" the combo.

What stall would E.T./MPH better; 4000? 4500?
69 Chevelle
68 Camaro

User avatar
speedtalk
Site Admin
Site Admin
Posts: 1001
Joined: Mon Apr 21, 2003 2:43 pm
Location: Kalamazoo, MI
Contact:

Post by speedtalk » Mon Nov 06, 2006 11:10 am

What are the tires?
Don Terrill
SpeedTalk Owner/Admin

Cobra

Post by Cobra » Mon Nov 06, 2006 1:41 pm

What works on the strip may not be the best choice for the street!

camaro_fever68
New Member
New Member
Posts: 41
Joined: Fri Jun 30, 2006 10:22 pm
Location: Baton Rouge

Post by camaro_fever68 » Mon Nov 06, 2006 3:29 pm

The tires are 255/60-15 E.T. Street Radials.

I don't daily drive it on the street. If I do cruise, I just rumble around town a little bit.
69 Chevelle
68 Camaro

User avatar
speedtalk
Site Admin
Site Admin
Posts: 1001
Joined: Mon Apr 21, 2003 2:43 pm
Location: Kalamazoo, MI
Contact:

Post by speedtalk » Mon Nov 06, 2006 5:38 pm

camaro_fever68 wrote:The tires are 255/60-15 E.T. Street Radials.

I don't daily drive it on the street. If I do cruise, I just rumble around town a little bit.
If you mean real street tires, then the extra stall speed is going to produce nothing but tire spin and smoke - fun to drive though.
Don Terrill
SpeedTalk Owner/Admin

Ed-vancedEngines

Post by Ed-vancedEngines » Mon Nov 06, 2006 6:55 pm

Posted: Mon Nov 06, 2006 1:41 pm Post subject:
What works on the strip may not be the best choice for the street

Very true words.

There is some hope though if you can afford to buy a newer high tech convertor that could maybe be confifured to give you the best of both. To begin with, I would suggest to not use any of the big name and famous torque convertors like the B&M, TCI etc. Those are still antique technology that use either the Reverse Pitch or cut down impeller technology that is ancient and allow high spool rpm.. Problem is they also allow a huge waste and are not efficient.

The newer and higher priced torque convertors from several different sources are achieving desired stall and are doing it with less waste. The newer torque convertors designed for the computer age cars with a switchable lock up seem to work great in both worlds when thay are set up to not lock up while drag racing but to lock up when in high gear for cruising down the highway. You could speak with any of those and get opinions and ideas of what may work for you. *Yanks* *Edge* are only two brands I can think of for now. I have heard some bad words about the *Edge* but I have one customer that is very happy with thier products.

A note:
We originally set up that car with a 2400 to 2800 street Alabama Convertor, and he could not get better than a 2.1 something 60 ft and a 12.80 1/4 at 109 mph, because the motor did not start coming alive until 3500 rpm, but was good for street driving. When he dicided to get another car for his street driving back and forth to work and daily, he talked to *Edge* and gave them all car specs and engine specs and they sent him a convertor that with no other changes got him in the 11's with a 1.7 something 60 ft and he does still drive it on the street and races it. That is a 3rd Gen Firebird still using the factory stock rear suspension and a 3.70 gear with a 26 inch tall 16 inch wheel with radial street tire and using a 16 inch wheel and a 28 inch tall M?T ET Street for racing. He has now added a 150 shot of N2o to it and to keep from getting sent home because of no bars, he kicks it into neutral at the 1,000 ft mark and coasts through at 116 mph to 118 mph on his coasting through 11.50 passes. Still he drives it back and forth to the track Quite a large number of miles, and only changes the tires. He even keeps the same spark plugs in it, which I am against.

So check into a convertor you can lock up in high gear and be not locked up when racing. That seems to be the ticket. With that I would go for the 4,000 stall and not stall it on the convertor. Stall it at a high rpm of maybe 2,000 - 2,500 and then drop the hammer and let the convertor flash when all the instant torque hits it. Just a suggestion.

Ed

camaro_fever68
New Member
New Member
Posts: 41
Joined: Fri Jun 30, 2006 10:22 pm
Location: Baton Rouge

Post by camaro_fever68 » Mon Nov 06, 2006 8:53 pm

Ed, I like the idea of that type convertor. I have seen the advertisements for a 400 based trans that uses the GN style switch lock where you can turn it on and off with a high stall and low stall.
69 Chevelle
68 Camaro

mudracer
Member
Member
Posts: 95
Joined: Wed Sep 27, 2006 3:08 pm
Location: Oregon
Contact:

Post by mudracer » Sun Dec 24, 2006 7:46 pm

correct me if I am wrong here, but didnt GM start making a switch pitch back in 1964/5? I know they were used in pontiacs, olds, and buicks, and Ive even found them in Cadillacs.

From what I hear, the problem with the OLD switch pitch stuff is the ability for the convertor to stay together.

I also understand that finding decent cores to build a new convertor out of might be difficult.

my penny *(I havent got enough experience to count 2 pennies yet) for what its worth.
Duane


http://sutherlinbbfest.org/

randy331
Guru
Guru
Posts: 3025
Joined: Mon Dec 04, 2006 7:30 pm
Location: N.W. MO.

Post by randy331 » Thu Jan 25, 2007 11:46 am

Ed; is the Alabama converter you were talking about also known as a (boss hog converter) ?

Thanks; Randy

Post Reply