LS engines are different from...
LS engines are different from traditional small-blocks in that their rods are on-center, meaning there is no offset in the rod, it can face either direction. Traditionally though, the engines are assembled with the bearing tangs all facing the driver side. The coated Mahle pistons are right at home in Bowers' engine; Mahle produces the pistons that go into the stock Gen III engine from GM.
To make it easier to work with it can be split in two for porting, then joined back together with an O-ring seal. Bowers just did a little minor touch-up and port matching to the heads to get the fit right, but the intake was otherwise untouched.
Six-bolt mains and a strong...
Six-bolt mains and a strong cast-iron block make the 6.0L block a natural choice for high-horsepower engines. With a reasonable power goal, the crew was comfortable using stock fasters on the bottom end, though they are torque-to-yield so replacement is necessary upon removal. Like many top engine builders, the RED guys marked their fasteners once torqued to eliminate any questions should the engine sit for a few days or weeks before the pan is installed.
A turn of the starter and the machinery came to life, ready to embarrass some bucks-up entries that cost two to three times what Bowers' little budget buster set him back. The dyno operator made three back-to-back pulls like he was shifting a Lenco, and as a testament to the efficiency of the engine, it varied by a mere one average horsepower and lb-ft in all three pulls. The torque curve looked like a giant Southwestern mesa. Through a pair of Magnaflow mufflers and 13 feet of pipe, the exhaust note sang crisp and clear. Best of all, with less than $7Gs in his engine, Bret and his crew were able to travel first class all the way back to Colorado.
GM's distributor drive adapter...
GM's distributor drive adapter kit is a neat way to get an LS up and running without the hassle of deciphering miles of wire. Simplicity is the key: A distributor, ignition box like the MSD Pro Billet, a Digital 7 ignition, and a carb, and it is ready to go.
| BY THE NUMBERS |
| RACING ENGINE DESIGN 370 GEN III CHEVY |
| Bore: |
4.030-inch |
| Stroke: |
3.622-inch |
| Displacement: |
370 actual cubic inches |
| Compression ratio: |
11.34:1 |
| Camshaft: |
Bullet solid roller |
| Cam duration: |
247/247 degrees |
|
at .050-inch tappet rise |
| Valve lift: |
.810/.810-inch |
| Rocker ratio: |
Harland Sharp |
|
1.8 intake / 1.8 exhaust ratio |
| Top ring: |
1.5mm |
| Second ring: |
1.5mm |
| Oil ring: |
3mm |
| Piston: |
Mahle flat-top |
| Block: |
OEM cast-iron |
| Crankshaft: |
OEM cast-iron |
| Rods: |
Eagle 6.125 H-beam |
| Cylinder head: |
OEM LS7 |
| Intake valve diameter: |
2.20-inch |
| Exhaust valve diameter: |
1.54-inch |
| Intake manifold: |
Performance Induction |
| Carburetor: |
Quick Fuel 1050 4150 style |
| Header: |
Pacesetter 13/4-inch primary |
| Ignition: |
MSD 7 |