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Discussion Starter · #1 · (Edited)
I received my new RHP D3's yesterday and they look AWESOME!:D
I can't wait to try them out!
Scotty Johnston at RHP has been a HUGE help in the engine build for my 78 Bronco. He Helped me get the right cam for my vehicle and intended use (Scotty's custom grind) and after two sets of bad heads at my local machine shop I decided to go with a set of brand new modern D3's at stage 2.;)
My pictures didn't turn out as nice as the ones on Scotty's site, but it should at least give some idea as to how much attention to detail Scotty gives to his porting.
 

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The grooves are from the Kama Sutra for engine head technology!

But seriously, theres a lot of interesting articles about them out there on the net.

Have you done any dyno testing with the grooves Scotty? Do they make any difference when flowing the heads or do they just affect combustion efficiency only?
 
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