Joined
·
216 Posts
The vehicle is a 68-72 Old Cutlass in DuSold Designs for a Pro-Touring makeover. The engine is the LSX376-B15 and I think it's a Magnuson Heartbeat 2650? Can you identify the supercharger (2300 or 2650 Hearthbeat) and which of the multitude of applications this was made for? The shop says the expectation is 700 to the wheels on a DynoJet at ADM. Is that realistic with the engine rated to a max of 15 pounds of boost?
If you were to purchase a LSX376-15 wouldn't you at least change out the powdermetal connecting rods; or is something else in that rotating assembly causing GM to state 15 pounds of boost max? In my application having to go dry sump the GM forged crank would go and a LT4 forged crank (or other dry sump crank) would replace it. At that point you begin to wonder if it's just better starting with a Dart LS Next block and the LSX-LS3 6-bolt heads on the engine and buying a balanced rotating assembly?
If you were to purchase a LSX376-15 wouldn't you at least change out the powdermetal connecting rods; or is something else in that rotating assembly causing GM to state 15 pounds of boost max? In my application having to go dry sump the GM forged crank would go and a LT4 forged crank (or other dry sump crank) would replace it. At that point you begin to wonder if it's just better starting with a Dart LS Next block and the LSX-LS3 6-bolt heads on the engine and buying a balanced rotating assembly?
Attachments
-
2 MB Views: 279
-
2.1 MB Views: 94
-
1.7 MB Views: 62
-
2 MB Views: 56
-
1.7 MB Views: 50