new 383 - which stall?
Thread Starter
Racer
Joined: Nov 2006
Posts: 379
Likes: 7
new 383 - which stall?
Hi,
I have a 383 on the way home over the big pond for my 1987 vette with a th-700.
Which stall converter would you recommend for this setup?
Engine:
- AFR 195 street (1040)
- Crower 00483 roller cam with 221/230 duration and 0.560"/0.580" lift.
- 10.89-1 CR
- F.I.R.S.T manifold
- headers & 2.5" dual exhaust
I have the D36 with a 3.07 ratio and it will only be street driven.
I have a 383 on the way home over the big pond for my 1987 vette with a th-700.
Which stall converter would you recommend for this setup?
Engine:
- AFR 195 street (1040)
- Crower 00483 roller cam with 221/230 duration and 0.560"/0.580" lift.
- 10.89-1 CR
- F.I.R.S.T manifold
- headers & 2.5" dual exhaust
I have the D36 with a 3.07 ratio and it will only be street driven.
Thread Starter
Racer
Joined: Nov 2006
Posts: 379
Likes: 7
What if I was going to run the stock converter until I get a rebuilt transmission, would that work with this cam/engine setup?
Last edited by Ronaldo; Jun 28, 2013 at 02:32 PM.
Racer
Joined: May 2008
Posts: 430
Likes: 1
From: Austin Texas
Just some things to keep in mind when selecting a stall speed:
1. The converter manufacturer's stall speed rating is based on use with an engine that is producing the level of power you have told him before he makes the selection out of his offerings. IF your engine actually ends up making notably MORE power than what you told him, the actual stall speed will be higher. In a situation I was personally involved in, I told the manufacturer what engine and what mods and what power I expected, and that I wanted a 3000 rpm stall speed. He did not think I would get that much power, but didn't tell me that out of politeness I guess, and specified a converter. When I DID get that level of power, it turned out that the converter stalled at abur 3700 rpm versus the 3000 I asked for!
2. The higher the stall speed (as long as it is not TOO high), the quicker the launch and initial acceleration, as the engine does not wate any time fighting its way from low rpm up to its powerband. That is great for DRAG cars. However, for the street there is a serious disadvantage: the higher the stall speed, the "softer" the throttle response will be in normal driving. This can make a really strong engine feel a bit unresponsive.
Jim G
1. The converter manufacturer's stall speed rating is based on use with an engine that is producing the level of power you have told him before he makes the selection out of his offerings. IF your engine actually ends up making notably MORE power than what you told him, the actual stall speed will be higher. In a situation I was personally involved in, I told the manufacturer what engine and what mods and what power I expected, and that I wanted a 3000 rpm stall speed. He did not think I would get that much power, but didn't tell me that out of politeness I guess, and specified a converter. When I DID get that level of power, it turned out that the converter stalled at abur 3700 rpm versus the 3000 I asked for!
2. The higher the stall speed (as long as it is not TOO high), the quicker the launch and initial acceleration, as the engine does not wate any time fighting its way from low rpm up to its powerband. That is great for DRAG cars. However, for the street there is a serious disadvantage: the higher the stall speed, the "softer" the throttle response will be in normal driving. This can make a really strong engine feel a bit unresponsive.
Jim G
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
2000rpm stall in my 86 was far far better than what I have in the 88.
