1000hp, High School Built, SBC
3 Attachment(s)
This isn't really marine related but I thought some of you might be interested
in seeing what is possible with turbos, now that there seems to be a little bit more happening with them. We dyno'd a twin turbo small block at Tom Earharts over the weekend which turned out pretty well. The entire motor, including hand built exhaust headers and intake plumbing, was built by students at Pinckney High School, in Pinckney, MI. The motor is a 357 cid Chevy with two 60mm turbos and a very mild 236/[email protected]" Cam, and 8.5:1 compression. We dyno'd the motor naturally aspirated first, and then put the turbos on and dyno'd with boost. The results were pretty astounding. 348HP naturally aspirated, 563 with 10psi boost, and 931HP with 25psi. Given more tuning time and better air(oil and exhaust leaks contaminated the intake air) it would have no doubt made 1000 horse. I've posted all three dyno sheets, and a couple of videos, one 770 raw ft-lb@3000rpm and one at 830 raw ft-lb@5500 rpm. Make sure to watch the torque scale. Thanks to Tom Earhart for all the dyno time, Bill Reifer(check300) for reading gauges and donating some race fuel, and John at Pole Barn Engines for boring and honing the block. http://www.youtube.com/watch?v=fhOiWL4_qmc http://www.youtube.com/watch?v=-dlSfSgWACE |
Do you have a knock sensor? That is some big psi at 25 and really pushing some fuel. Carburated? Great project for the students and they did a great job.
Wannabe |
nicely done! I lived in Hamburg for about 12 years before I moved to Florida - great to see some HP being built back in Pinkney - too bad I never had that class offered when I went to school.
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Originally Posted by raimerm
(Post 3112368)
This isn't really marine related but I thought some of you might be interested
in seeing what is possible with turbos, now that there seems to be a little bit more happening with them. We dyno'd a twin turbo small block at Tom Earharts over the weekend which turned out pretty well. The entire motor, including hand built exhaust headers and intake plumbing, was built by students at Pinckney High School, in Pinckney, MI. The motor is a 357 cid Chevy with two 60mm turbos and a very mild 236/[email protected]" Cam, and 8.5:1 compression. We dyno'd the motor naturally aspirated first, and then put the turbos on and dyno'd with boost. The results were pretty astounding. 348HP naturally aspirated, 563 with 10psi boost, and 931HP with 25psi. Given more tuning time and better air(oil and exhaust leaks contaminated the intake air) it would have no doubt made 1000 horse. I've posted all three dyno sheets, and a couple of videos, one 770 raw ft-lb@3000rpm and one at 830 raw ft-lb@5500 rpm. Make sure to watch the torque scale. Thanks to Tom Earhart for all the dyno time, Bill Reifer(check300) for reading gauges and donating some race fuel, and John at Pole Barn Engines for boring and honing the block. http://www.youtube.com/watch?v=fhOiWL4_qmc http://www.youtube.com/watch?v=-dlSfSgWACE Looks like the Students did a great Job,.....can only imagine what the future will continue to bring. :drink: Jon |
Originally Posted by Swamplizard
(Post 3112440)
nicely done! I lived in Hamburg for about 12 years before I moved to Florida - great to see some HP being built back in Pinkney - too bad I never had that class offered when I went to school.
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Looks like it had a Classic FAST EFI judging from the software on the laptop shown
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I
Originally Posted by wannabe
(Post 3112382)
Do you have a knock sensor? That is some big psi at 25 and really pushing some fuel. Carburated? Great project for the students and they did a great job.
Wannabe My buddy teaches the auto shop class, and him and I have always been turbo fans, and horsepower fans in general. It's just nice to see some of the next generation as excited as we are, and who are willing to put in the extra time to accomplish this. |
Originally Posted by EightSecv6
(Post 3112698)
Looks like it had a Classic FAST EFI judging from the software on the laptop shown
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