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Written by Justin Banner
Big RPM and big displacement EFI University has worked some magic here.High-RPM LS-engines exist, but usually are limited to destroking and reducing their displacement. What if you could get over ten-thousand-RPM with a LS7 block and displacement?It seems like the impossible dream. Getting 427-cubic-inches to spin above 7,000-RPM without slinging parts out of the block seems like the perfect dream. A reliable small block Chevy spinning over 8,500 revs doesn"t even seem like a reality. Well, the students and teachers over at EFI University decided it was time to make that change in an LS7 engine they built for a drag race project known as "Spinal Tap."This was a two-year development, so it"s not like this has been something that was done overnight just to say "look at what we did" and it blows up the next day. Instead, this has seen multiple simulated runs on their dyno and on the Spintron of COMP Cams Research and Development Department. However, you"ll notice there wasn"t any mention of extreme work done to the bottom end. That"s because it"s not the rotating assembly there that poses the issues at 11000, it"s rotating assembly that controls the engines breathing and the heads. #gallery-4 { margin: auto; } #gallery-4 .gallery-item { float: left; margin-top: 10px; text-align: center; width: 50%; } #gallery-4 img { border: 2px solid #cfcfcf; } #gallery-4 .gallery-caption { margin-left: 0; } /* see gallery_shortcode() in wp-includes/media.php */ <br style="clear: both" />
Date written: July 5, 2018
More of this article on the LS1 Tech website
ID: 12446
Big RPM and big displacement EFI University has worked some magic here.High-RPM LS-engines exist, but usually are limited to destroking and reducing their displacement. What if you could get over ten-thousand-RPM with a LS7 block and displacement?It seems like the impossible dream. Getting 427-cubic-inches to spin above 7,000-RPM without slinging parts out of the block seems like the perfect dream. A reliable small block Chevy spinning over 8,500 revs doesn"t even seem like a reality. Well, the students and teachers over at EFI University decided it was time to make that change in an LS7 engine they built for a drag race project known as "Spinal Tap."This was a two-year development, so it"s not like this has been something that was done overnight just to say "look at what we did" and it blows up the next day. Instead, this has seen multiple simulated runs on their dyno and on the Spintron of COMP Cams Research and Development Department. However, you"ll notice there wasn"t any mention of extreme work done to the bottom end. That"s because it"s not the rotating assembly there that poses the issues at 11000, it"s rotating assembly that controls the engines breathing and the heads. #gallery-4 { margin: auto; } #gallery-4 .gallery-item { float: left; margin-top: 10px; text-align: center; width: 50%; } #gallery-4 img { border: 2px solid #cfcfcf; } #gallery-4 .gallery-caption { margin-left: 0; } /* see gallery_shortcode() in wp-includes/media.php */ <br style="clear: both" />
Date written: July 5, 2018
More of this article on the LS1 Tech website
ID: 12446
