NRE Twin Turbo 515 BBC
 

Here's a few pics of an all aluminum, reverse cooled, hydraulic flat tappet 515 BBC with twin turbos that Nelson Racing Engines built. It made 1100HP on 91 octane and 1850HP on 109. It idles at 750 RPM.

Videos coming soon. :thumbsup:

https://lateral-g.net/temp/tt515top.jpg

https://lateral-g.net/temp/tt515.jpg

What are the dimenisons on that intercooler? It looks tiny in the pictures!

Also, what kind of car is it in? Judging by the fenders, it looks like quite the sleeper...

I am no expert but I can't see only changing fuel spec would make 700hp more. No doubt by changing fuel they can change mixture curves and timing curves and gain a bunch but I clearly can't see or understand that much of a change unless the boost knob was turned up with the 109 and down on the 91. Please inform this young grasshopper.

Mike

You got it. High octane = more detonation resistance, which means you can run more boost, put in more fuel to go with the additional air, and more timing... and that means more power. Lots more power.

:eek: That is nice!! Looks like it was planned out well. Everything fits just right! :thumbsup:

Cool! What kind of car is it in?

Amazing, simply amazing!!!!

how much do you think one of those would set you back?!?!?

thanks Chris.

wow..........

A very quick one!! :yes: lol

A 57 Chevy.