ASA LS6 motor configuration question
11-08-2012, 06:49 PM
#1
Safety Car
Thread Starter
ASA LS6 motor configuration question
I am looking at a 2004 ASA crate motor. Aside from the dry sump, can anyone comment on the differences (if any) between these and a standard 'vette LS6?
Some research has shown a different camshaft, and other posts seem to indicate these are LS1 motors, not LS6. I assume they use the 12561168 block, what about the heads? Details aren't listed in the ad...
Any info or links would be appreciated.
Some research has shown a different camshaft, and other posts seem to indicate these are LS1 motors, not LS6. I assume they use the 12561168 block, what about the heads? Details aren't listed in the ad...
Any info or links would be appreciated.
11-08-2012, 06:53 PM
#2
Safety Car
Thread Starter
This post from bosco seems to indicate they were all LS1:
The ASA cam is a .525 lift cam with 110 lobe centers and a good bit of duration. Pretty strong cam despite the conservative numbers.
The computers were also tuned by Lingenfelter.
However, I wouldn't pay a lot of money for one of these though as they really are just a stock LS1 with the ASA cam, better rod bolts, and the ASA scavenge dry sump system.
A good take out LS6 with a cam change and add the scavenge dry sump system would probably be better.
The ASA cam is a .525 lift cam with 110 lobe centers and a good bit of duration. Pretty strong cam despite the conservative numbers.
The computers were also tuned by Lingenfelter.
However, I wouldn't pay a lot of money for one of these though as they really are just a stock LS1 with the ASA cam, better rod bolts, and the ASA scavenge dry sump system.
A good take out LS6 with a cam change and add the scavenge dry sump system would probably be better.
11-08-2012, 07:29 PM
#3
Drifting
They were all LS1's and all I have seen had the "853" cylinder heads. They were rated at 430 flywheel HP and seemed to be ALL of that. They could make 400 to the wheels in legal trim.
The ASA cam is a good performer on road courses, providing good torque and power up to the 6500 rev limit.
I have one that I MIGHT consider parting with. It came out of a Michael Waltrip Racing ASA AC Delco car from 2004.
If I decide to sell it, I will offer it on this site first.
The ASA cam is a good performer on road courses, providing good torque and power up to the 6500 rev limit.
I have one that I MIGHT consider parting with. It came out of a Michael Waltrip Racing ASA AC Delco car from 2004.
If I decide to sell it, I will offer it on this site first.
11-08-2012, 08:14 PM
#4
Safety Car
Tangential question - these blocks don't have the bay to bay windows that the LS6, LS2 and LS3 have. They also don't have a dry sump system that is pulling a vacuum. It seems like the windows aren't all that necessary, though GM went through the trouble of putting them in street cars and likes to tout them. Why didn't the ASA cars switch to LS6 blocks once the LS6 became available?
11-09-2012, 07:18 AM
#7
Drifting
Chevrolet did a special run of the LS1's for ASA, they were then sent to Lingenfelter for the upgrades and sealing.
I am not aware of any getting 243 heads, but I guess it is possible. The reason I doubt it is that this would be a power upgrade of some 15-20 HP and ASA tried hard to keep a handle on keeping them equal.
I have had several ASA motors and all had 853 heads.
ASA motors were scavenge only, dry sump motors using a RAZOR single stage pump and MOROSO steel pans.
Last edited by bosco022; 11-09-2012 at 07:20 AM.