please do not respond with
"I would just swap in a V8"
that's not what im doing.


I need to know if the stock 411 for 2001-2 will handle 10 psi boost witout a modified OS performance file.
The truck is a 2000 with the old black box and im already planning on the 411 swap --and spider eradication, and a single turbo without an intercooler.

 

Like I said i your other post, it can only handle boost till you max out what the MAF can see. Since it's a 4.3, might be able to get 10 psi before it maxes it. I'm running 5 psi on a 5.3 on a stock OS but short shifting it at 5500 to keep the MAF happy on my dads 72 K20.