LSX oil pans
The biggest issue is whether you need the sump portion of the pan at the front or the back. This will depend upon any frame crossmembers and steering linkage.
The Best V8 Stories One Small Block at Time

As I mentioned earlier, I suspect the Mast and Holley are made from the same casting. Best that I can estimate (again sorry I'm not sure), this casting is very similar to the F-body in terms of height and front clearance issues. The Holley/Mast is a safe choice to ensure that unexpected road debris doesn't destroy your engine.
I knew the Holley was based on another pan and mistakenly thought it was the Mast.
I will edit my previous post for those people that don't read this 24 page thread.
I originally bought that pan for my '81 Camaro and sent it back to Summit after measuring it at 7-1/2" versus 7-7/8" for the truck pan.
http://www.nastyz28.com/forum/showthread.php?t=229812
Post #5 is: "correct me if im wrong, but so far the LS3 has only been available in the vette and the 5th gen camaro. the vette pan wont work without cutting the crossmember on a second gen f body. i have no clue how the 5th gen pan is configured . as far as bolting up, yes it will, but u will most likely have to have the windage tray , pick-up tube , and dip-stick off the donor cars pan to work."
That's all I have - I have not seen a definite answer to your question.
The LSA pan has cast-in mounts for the oil cooler, a different the boss for the oil level sender, and the larger thread size for the oil filer. Everything else (dimensions, internal baffling, windage tray, ect.) is the same.
I think its a marketing ploy by Holley (and others) that people automatically think that an aftermarket pan is better and/or cheaper than the stock pan. That certainly was true in the SBC days, but is not true now.
While there is disagreement on whether the structural strength of the GM pans is important to overall engine durability, I feel more comfortable when everything, including the bell housing, bolts up as GM designed it. I cannot image that GM would put extra money into the pan unless their computer simulation or actual testing showed benefits.
As always - just my opinion.














