how much will a stock crank hold procharged.??
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how much will a stock crank hold procharged.??
was up guys, well doing my build right now, i am going to be running a stock crank out of a 6.2 .... the motor is going to be forged piston and rods but the crank stock on a 6.2 block, i am going to be running an F1a with around 15 or more pounds of boost, my point is if the crank will handle.?? i really dont know how much hp is going to be making but i am going to be on E85 and going to be running a 4.0 pulley on the blower and a 10% overdrive on the crank (this is on a truck) so itll be close to maxed out, can anyone tell me will the crank hold the extra extress or should i just do a forged crank? i already have the pistons for it or else i would have gone 418ci but i dont feel like dumping 1000+ on a stock 3.622 but forged, thanks in advance
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I have seen these cranks make amazing power numbers on e85.
I am sure you have a solid platform and just ease up the boost..
Actually i havent seen a broke crank..just pistons...good luck bro
I am sure you have a solid platform and just ease up the boost..
Actually i havent seen a broke crank..just pistons...good luck bro
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Uhhhh makes me happy lol ... I really dont want to was all this money i am wasting and have the crank as its weak link .... So a stock crank with a blower could hold up 1000rwhp ... But how long??
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I kinda have the same boat as you, forged everything except stock crank on a 370 LQ9. My engine builder (LME) said that I could push to 1000rwhp turbocharged, but he said he wouldn't recommend doing that alot, and that I should stay around the mid to high 800's range, and I would be fine.
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I've been running 830+rwhp/18psi on my stock crank 370 for a little while now. Also remember the tensioning system will play a key factor. I use the Aster setup which with the auto spring tensioner, doesn't put nearly as much stress on the crank snout as a very very tight manual tensioner will. I plan on putting my new blower on and seeing what she can do...I'll most likely go direct drive for this though.
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http://www.procharger.com/supercharger/blog/?p=178
This Corvette ran hard for several years on a road course with a D-1SC at 16 psi of boost on the stock crankshaft, so problems at all. We then built another engine for the car and jumped up to an F-1C. Bob
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