Then we gave it 118 octane oxygenated race fuel, adjusted the timing, and swapped in a bigger Trick Flow Track Max cam shaft, which was degreed to maintain a similar dynamic compression ratio. This power plant cranked out 413 horsepower and 424-pound feet of torque running on pump gas. Once the engine rolled into the dyno it received FiTech's Go-EFI classic black system rated for up to 550 horsepower. Next came a Trick Flow dual plane Street Burner manifold. 7-400 long Comp push rods and Trick Flow 1.5 ratio roller rockers completed the valvetrain. Comp hydraulic roller lifters were dropped in, followed by Trick Flow's Super-23 degree fast as cast 195cc cylinder heads. They received Total Seal rings with a gas ported top ring. We chose Icon forged pistons with a 13cc effective dome mounted on Scat I-beam rods. We used a Trick Flow Track Max cam shaft to keep it in a manageable range. Dynamic compression ratio is the actual compression ratio inside the cylinder after the intake valve closes. This build would increase the static compression ratio to 13.15 to one, and the dynamic compression ratio to 9.17 to one.
We started with our rebalanced stock crankshaft. We used our Sunnen SV-15 to hone it to 4.060 and two-ten thousandths. Since almost everything but the crankshaft would be replaced the engine was torn down. So, after a few months we decided to bring it back to demonstrate the relationship between static and dynamic compression ratio. (Frankie)> Back in the dyno cell the small block made 276 horsepower and 345 pound feet of torque. After finishing the top end the engine fired right up in our parking lot. We kept the existing pistons but replaced the worn out rings. We checked the main bearing clearances using Plasti-Gauge and installed a ten thousandths under crankshaft kit.
We gave the engine new seals and valve springs designed for a sportier hydraulic roller cam and refreshed the cylinder bores with a 320-grit ball hone. Then took it, some extra parts, and some simple hand tools outdoors. We found a well used and worn out engine. The first time we worked on this engine we wanted to recreate the backyard build experience that many people have at their home. This one has a pretty unique history, and if you're not familiar with it or you want a quick refresher here's a look at the evolution of this power plant. A dyno mule's an engine that doesn't really have a home or a specific application but is a great test bed for us to try out new parts combinations, engine theories, or any crazy ideas that we can think of. This is a 360 cubic inch small block Chevy that turned into a bit of a dyno mule. Today we're gonna return to one of our funnest builds, our Compression Obsession engine.
Cast of too hot to handle season 2 cam full#
(Pat)> We've got a barrel full of race E-85 and we're gonna see how it performs in our Compression Obsession small block Chevy. (Pat)> You're watching Powernation! (Frankie)> Ethanol fuel has some definite benefits, especially for a high compression engine.
0 kommentar(er)
