stock cranks above 6k RPM's ???

[92TY0393]

Has anyone run a stock crankshaft above 6,000 RPM's regularly without any problems? I'm trying to build a good roadrace Ty and need to be able to accelerate out of different speed corners. This means I need a broader hp range, or more gears. As usual I'm trying to do this on a budget, so a billet steel crank is out of the picture.

From what I'm told the RPM's are more of an issue than the boost pressure. The plan is to keep the recipricating weight to a minimum, and use a 4bolt bowtie block to keep the crank from moving around too much, and not to go above 20-25psi.

Does anyone have experiance with a similar combonation??

How high do most on you rev them?

Any feedback would be appreciated.

Scott

 

[jwaller]

most built trucks see 5200-5300 at the most...... the power drops off quick after that :fist:

 

[92TY0393]

If I understand, the reason power fall of is because the air can't flow more than a certain amount without getting too hot. If you have a more efficient turbo, intake, head combination wouldn't the power peak at a higher RPM?

How high do the guys with a steel crank rev them?

 

[myclone]

Yes I have on a regular basis.

The crank isnt the issue IMO. Its the oiling system in a stock block that is at sustained 6k+ RPM.

Drop me a mail if your interested as Ive posted the same info on here so many times Im tired of typing it over and over.