converter help - Page 2

Bob Mulry · 11-07-2011, 04:23 AM

How about just rolling down the return road in high gear and whacking the throttle......

The tires will not spin in high gear and you can easily read the flash on the tach....

I know, I know not as high tech as a data logger, but much cheaper....

art leong · 11-07-2011, 09:56 AM

Quote:

Originally Posted by Bob Mulry

How about just rolling down the return road in high gear and whacking the throttle......

The tires will not spin in high gear and you can easily read the flash on the tach....

I know, I know not as high tech as a data logger, but much cheaper....

My datalogger came as a part of my ECU. And the whole setup didn't cost as much more than an MSD box, distributor, and 2 step.

cad · 11-07-2011, 02:09 PM

Mike,
Sounds like the converter may not be made exactly for your combo.
My 385, th350, 4.88s, aftermarket disc/ stock rr drum, 29x9, ATI 4600 treemaster allows me to setup on the 2-step to about 3200 before the car will roll. I do have to set the brakes harder than normal...I footbrake on a regular basis to hit the tree.
It will 60' 1.48-1.50.
I'd call Charlie Plott @ ATI or your personal preference for input as the camshaft and car weight makes a big difference.

greg fulk · 11-08-2011, 03:09 AM

My "bracket" / street/strip Camaro is about the same... it has a 9" 4200 converter ( in high gear anytime you "hit it" it goes to 4200 & pulls) but the MAX it will footbrake is 2700....it feels better around 2200. My Cutlass is almost the same too. Oh the Camaro has 28x9 Drag Radials with 4.11 gears (12.40s)

Mike W · 11-09-2011, 09:32 PM

Quote:

Originally Posted by cad

Mike,
Sounds like the converter may not be made exactly for your combo.
My 385, th350, 4.88s, aftermarket disc/ stock rr drum, 29x9, ATI 4600 treemaster allows me to setup on the 2-step to about 3200 before the car will roll. I do have to set the brakes harder than normal...I footbrake on a regular basis to hit the tree.
It will 60' 1.48-1.50.
I'd call Charlie Plott @ ATI or your personal preference for input as the camshaft and car weight makes a big difference.

Sounds very similiar to my combo, what are you going thru the traps at with 4.88s?

1.48 and 1.50 VERY nice 60ft......... my best is 1.52 with 4.10s

cad · 11-10-2011, 03:36 PM

Between 7200 & 7400.

Mike W · 11-10-2011, 08:27 PM

Cad What kinda of times do you turn? I was thinking if going to 4.56 this year. Thanks Mike

cad · 11-12-2011, 10:39 AM

At KCIR, during the CDRA gambler, we went as fast as 1.468/10.97 in the morning @ about 1800' DA.
I lost some mph with the 4.88s compared to my 4.10s. I'd like to go back to 4.30 or 4.56 over the winter.

btw..I launch at 1500 rpms to hit the tree in my usual spot.

Clark

Hans Olsson · 11-12-2011, 12:21 PM

Quote:

Originally Posted by Mike W

Terry brakes arent holding, the car keeps moving the more i bring it up on the converter. BTW if thats your corvette in the pics.... very nice car. Thanks Mike

Mike, are the front wheels locked and sliding as you bring the rpms up?

Mike W · 11-14-2011, 08:35 PM

No with the brakes pushed down it just pulls me thru .

11-07-2011, 04:23 AM	#11
Bob Mulry VIP Member Join Date: Apr 2002 Location: Coarsegold, CA Posts: 1,016 Likes: 57 Liked 320 Times in 102 Posts	Re: converter help How about just rolling down the return road in high gear and whacking the throttle...... The tires will not spin in high gear and you can easily read the flash on the tach.... I know, I know not as high tech as a data logger, but much cheaper.... __________________ Bob Mulry 7516 STK A & M Motorsports

11-07-2011, 02:09 PM	#13
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 702 Likes: 202 Liked 91 Times in 51 Posts	Re: converter help Mike, Sounds like the converter may not be made exactly for your combo. My 385, th350, 4.88s, aftermarket disc/ stock rr drum, 29x9, ATI 4600 treemaster allows me to setup on the 2-step to about 3200 before the car will roll. I do have to set the brakes harder than normal...I footbrake on a regular basis to hit the tree. It will 60' 1.48-1.50. I'd call Charlie Plott @ ATI or your personal preference for input as the camshaft and car weight makes a big difference.

11-08-2011, 03:09 AM	#14
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Re: converter help My "bracket" / street/strip Camaro is about the same... it has a 9" 4200 converter ( in high gear anytime you "hit it" it goes to 4200 & pulls) but the MAX it will footbrake is 2700....it feels better around 2200. My Cutlass is almost the same too. Oh the Camaro has 28x9 Drag Radials with 4.11 gears (12.40s) __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

11-10-2011, 03:36 PM	#16
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 702 Likes: 202 Liked 91 Times in 51 Posts	Re: converter help Between 7200 & 7400.

11-10-2011, 08:27 PM	#17
Mike W Junior Member Join Date: Sep 2009 Posts: 17 Likes: 0 Liked 0 Times in 0 Posts	Re: converter help Cad What kinda of times do you turn? I was thinking if going to 4.56 this year. Thanks Mike

11-12-2011, 10:39 AM	#18
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 702 Likes: 202 Liked 91 Times in 51 Posts	Re: converter help At KCIR, during the CDRA gambler, we went as fast as 1.468/10.97 in the morning @ about 1800' DA. I lost some mph with the 4.88s compared to my 4.10s. I'd like to go back to 4.30 or 4.56 over the winter. btw..I launch at 1500 rpms to hit the tree in my usual spot. Clark Last edited by cad; 11-12-2011 at 10:41 AM.

11-14-2011, 08:35 PM	#20
Mike W Junior Member Join Date: Sep 2009 Posts: 17 Likes: 0 Liked 0 Times in 0 Posts	Re: converter help No with the brakes pushed down it just pulls me thru .