Outstanding G Body Monte Carlo
Joined: Feb 2008
Posts: 6,466
Very strange setup.
A few things that stuck out to me:
-Picking an old gen M62 supercharger. I really dont get doing all of this fab work for such a garbage blower. I get he probably got it completely free, but I'd at least have dropped $50-$100 on a M90. Having to spin the thing to the moon to make any power puts it way outside of the efficient range where its adding a ton more heat for a tiny bit more airflow. Even if it was a gen 5, I don't think I've seen an Ecotec much over 300 wheel with one of these - there just isn't enough airflow.
-Picking a roots blower for this application. Small CID, relatively high revving (given the trap speed / ultra high rear end ratio), 4000 stall converter, yet picks a power adder that shines at low end gains. IMO given its already almost completely a centrifugal setup anyways (besides the blower mount), I think an actual centrifugal would've been much better for this application.
-E85 carb. At only 7 psi with that big air to air IC I don't see the benefit of E85 as the blower will max out way before you run into spark knock. The setup is just dying for a properly sized blower - at least a junkyard m112 to take advantage of the octane.
-All that work on cooling to just stick the air filter above the header.
-500 wheel horsepower goal. IMO its completely impossible with that setup. IIRC stock LM7 vehicles only put down low-mid 200s to the wheels, so he's thinking this blower and carb setup is going to double that (especially with less than half a bar of pressure)? What makes it worse is it'll be even more of a struggle than a stock LM7 vehicle with a turbo 400, Ford 9", loose converter, and huge wheels / tires. Personally I'd be absolutely shocked if it made more than 300-350 whp.
-Street car with 5.13s and no OD. Plugging the numbers into an online calculator its going to be turning almost 4500 rpm at 75 mph and still almost 4000 at 65. Id bet its limited to city driving almost exclusively as thats screaming on the highway.
Not to rip on the setup too much, but it just seems to be all over the place in its intention. Props for doing something different at least, but I'd have put all that fab time towards a turbo personally; at least that could potentially hit 500 whp.
A few things that stuck out to me:
-Picking an old gen M62 supercharger. I really dont get doing all of this fab work for such a garbage blower. I get he probably got it completely free, but I'd at least have dropped $50-$100 on a M90. Having to spin the thing to the moon to make any power puts it way outside of the efficient range where its adding a ton more heat for a tiny bit more airflow. Even if it was a gen 5, I don't think I've seen an Ecotec much over 300 wheel with one of these - there just isn't enough airflow.
-Picking a roots blower for this application. Small CID, relatively high revving (given the trap speed / ultra high rear end ratio), 4000 stall converter, yet picks a power adder that shines at low end gains. IMO given its already almost completely a centrifugal setup anyways (besides the blower mount), I think an actual centrifugal would've been much better for this application.
-E85 carb. At only 7 psi with that big air to air IC I don't see the benefit of E85 as the blower will max out way before you run into spark knock. The setup is just dying for a properly sized blower - at least a junkyard m112 to take advantage of the octane.
-All that work on cooling to just stick the air filter above the header.
-500 wheel horsepower goal. IMO its completely impossible with that setup. IIRC stock LM7 vehicles only put down low-mid 200s to the wheels, so he's thinking this blower and carb setup is going to double that (especially with less than half a bar of pressure)? What makes it worse is it'll be even more of a struggle than a stock LM7 vehicle with a turbo 400, Ford 9", loose converter, and huge wheels / tires. Personally I'd be absolutely shocked if it made more than 300-350 whp.
-Street car with 5.13s and no OD. Plugging the numbers into an online calculator its going to be turning almost 4500 rpm at 75 mph and still almost 4000 at 65. Id bet its limited to city driving almost exclusively as thats screaming on the highway.
Not to rip on the setup too much, but it just seems to be all over the place in its intention. Props for doing something different at least, but I'd have put all that fab time towards a turbo personally; at least that could potentially hit 500 whp.
Last edited by bumpin96monte; Jun 1, 2021 at 11:34 AM.
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