Converting ASA LS1 to full dry sump & Carb for road race
#1
Drifting
Thread Starter
Converting ASA LS1 to full dry sump & Carb for road race
I have an ex ASA LS1 over at Byron Koury Racing Engines in Deland, Fl where we are converting from the single stage scavenge/stock pressure pump system to full 3 stage dry sump.
Will be using a block mount 3 stage Aviaid pump with a modified Moroso/ASA pan, ATI drive hub, and the ATI/ASA damper.
Doing this because we feel the single stage scavenge system with the long serpentine belt system is just not efficent enough scavenging for road racing. The single stage system is a definite improvement over the wet sump system, but all the dry sump manufacturers and engine builders I have spoke with say it has serious limitations.
This motor will be used in a new Howe type Mustang for GTA and possibly TA2.
We have ditched the FI and the 853 cylinder heads in favor of 243's. The motor will also get either a Edelbrock Victor Jr or Edelbrock Performer RPM. We will test both.
The cam will be a .550 lift Crane piece, which is the max under the rules. Will likely use a Holley 80541 650 cfm carb with a 7000 rpm rev limit. A 750 cfm carb can be used, but with a 6500 rpm limit.
The motor will be fired by the MSD 6LS 6010 controller.
Headers will be Schoenfeld 1 3/4" to 1 7/8"
Should be a good performer in a tube frame 2800 pound car with driver.
Will be using a block mount 3 stage Aviaid pump with a modified Moroso/ASA pan, ATI drive hub, and the ATI/ASA damper.
Doing this because we feel the single stage scavenge system with the long serpentine belt system is just not efficent enough scavenging for road racing. The single stage system is a definite improvement over the wet sump system, but all the dry sump manufacturers and engine builders I have spoke with say it has serious limitations.
This motor will be used in a new Howe type Mustang for GTA and possibly TA2.
We have ditched the FI and the 853 cylinder heads in favor of 243's. The motor will also get either a Edelbrock Victor Jr or Edelbrock Performer RPM. We will test both.
The cam will be a .550 lift Crane piece, which is the max under the rules. Will likely use a Holley 80541 650 cfm carb with a 7000 rpm rev limit. A 750 cfm carb can be used, but with a 6500 rpm limit.
The motor will be fired by the MSD 6LS 6010 controller.
Headers will be Schoenfeld 1 3/4" to 1 7/8"
Should be a good performer in a tube frame 2800 pound car with driver.
#4
Drifting
Thread Starter
We ain' there yet, just dissasembled, and gatherin' parts.
I'll keep ya up on this as we go along. The car will be built at Bemco Fab in Deland in the spare time by Woody.
So far I have:
* Howe Mustang TA2 body
* Howe TA2 front clip
* A frames
* Penske's
* Brembo fronts
* Winters Quick change, ...but might go 9" instead
* Motor
* SWEET rack
* Schoenfeld or Howe headers
* ATL cell
* Jerico 4 speed
Car will look like this save for in the Grabber Blue paint
I'll keep ya up on this as we go along. The car will be built at Bemco Fab in Deland in the spare time by Woody.
So far I have:
* Howe Mustang TA2 body
* Howe TA2 front clip
* A frames
* Penske's
* Brembo fronts
* Winters Quick change, ...but might go 9" instead
* Motor
* SWEET rack
* Schoenfeld or Howe headers
* ATL cell
* Jerico 4 speed
Car will look like this save for in the Grabber Blue paint
Last edited by bosco022; 06-01-2013 at 01:50 PM.
#6
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John
#7
Drifting
Thread Starter
At a recent event, after a 30 minute race our Corvette LS6 had more oil in the pan than in the dry sump tank. Luckily it never lost pressure and seems OK.
I will say that on our GTA type motors with the single stage system at power levels under 500 FWHP have survived 20-30 minute SCCA races. But I now believe this is a marginal system for road racing.
Our nearly 600 HP 383 LS6 carb'd motor in a Howe type SPO Camaro suffered oil starvation, resulting in seizing up the motor. We believe the single stage system was the cause.
In the future we will use 3 or 4 stage full dry sump.