9,000rpm oem rotating assembly, how would you do it?
03-21-2012, 03:32 PM
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9,000rpm oem rotating assembly, how would you do it?
I've been kicking around the idea of building a high revving budget build. Oxymoron I know
Here's my idea
6.0 block
4.8 crank
Arp bolts
Regular gasket set
Cam
Valve springs
Intake
Is a longer rod like the 4.8 necessarily better than the 6.0 rod?
Are shaft mount rockers necessary?
I'm expecting 15,000-25,000 miles out of this motor. I'd like to see it with a turbo.
What're your guys opinions and ideas?
Here's my idea
6.0 block
4.8 crank
Arp bolts
Regular gasket set
Cam
Valve springs
Intake
Is a longer rod like the 4.8 necessarily better than the 6.0 rod?
Are shaft mount rockers necessary?
I'm expecting 15,000-25,000 miles out of this motor. I'd like to see it with a turbo.
What're your guys opinions and ideas?
03-21-2012, 03:46 PM
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The PCM only reads to 8000.. anything above that and i dont wanna know 
Have you talked to any engine builders? Maybe they have tried it and it didnt work so great.. might be a good starting point to save yourself a headache and money.
Good luck!!
Have you talked to any engine builders? Maybe they have tried it and it didnt work so great.. might be a good starting point to save yourself a headache and money.
Good luck!!
03-21-2012, 03:50 PM
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I have
They suggested 305 or 283 crank with oversized bearings in a bored 400 block. They've clocked 10-11,000 rpm. I'm relatively tame compared to that.
So carb and msd.
Anything else you guys can think of right off the bat?
Shaft mount rocker arms necessary?
Longer rods better?
They suggested 305 or 283 crank with oversized bearings in a bored 400 block. They've clocked 10-11,000 rpm. I'm relatively tame compared to that.
So carb and msd.
Anything else you guys can think of right off the bat?
Shaft mount rocker arms necessary?
Longer rods better?
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03-21-2012, 04:01 PM
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I asked around and haven't encountered anyone destroking the gen III yet.
I did find guys up by the iowa border running bored 454 blocks with custom cranks around 400 ci in their mud racers. I bought tires off a guy that showed me first hand what 11,000 rpm sounds like from a 397? Or so ci big block he had built. If I wasn't an idiot and it wasn't snowing at night I would have one bad *** video.
That guy is who convinced me to sell my 426 small block chevy and consider a destroked motor.
I did find guys up by the iowa border running bored 454 blocks with custom cranks around 400 ci in their mud racers. I bought tires off a guy that showed me first hand what 11,000 rpm sounds like from a 397? Or so ci big block he had built. If I wasn't an idiot and it wasn't snowing at night I would have one bad *** video.
That guy is who convinced me to sell my 426 small block chevy and consider a destroked motor.