How much will stock internals hold?

[Scotty15204]

Simple question right, sorry guys i tried the search function but it just kept re-showing me the normal page..... same order of threads and everything. I know that the internals are notoriously brittle.... but how brittle are they really? For 400-475 horse how much do i really need to replace on the lower end rotation, already planning on replacing top end stuff.

 

[driller]

While it depends a lot on HOW you achieve the extra HP, the limit has been noted to be 450 HP plus or minus at the flywheel.

 

[ILLS]

While it depends a lot on HOW you achieve the extra HP, the limit has been noted to be 450 HP plus or minus at the flywheel.

That is pretty much about it. You could push a little more if running a turbo.

 

[Roadboss]

You could also get the SHM book and do some reading to gain additional knowledge.

 

[Icarus]

If your going to be approaching the limits of the internals, a good dyno-tune would be a must imho, as you can make sure it's tuned correctly (air-fuel) as that is what will destroy your engine the quickest if it's off... So plan that into your budget as well

 

[ILLS]

If your going to be approaching the limits of the internals, a good dyno-tune would be a must imho, as you can make sure it's tuned correctly (air-fuel) as that is what will destroy your engine the quickest if it's off... So plan that into your budget as well

A good dynotune with anything besides a mild N/A combo is a must to keep things together. As for when you are blown??? Well those two are hand in hand at that point. I see allot of people spend allot of money on the blower and this and that but then either cheap out on the fuel system or the tuning. Those are about the two worst areas to cheap out on. Like Ic said, definitely budget the custom tuning into the project.