How much can my stock internals take?

**kealap** · 03-14-2007, 10:34 AM

I have a 99 SS with a MTI Heads & Cam pckg. already pushing 419rwhp and am looking at a procharger d-1sc intercooled kit. Since I already have more power I was going to start off with 5psi. Is this too much for my stock internals? Really don't want to pull the motor and build it up. Low miles only 30k.

**anarchy99** · 03-16-2007, 12:22 PM

If you stay around 5 psi, and around 550 psi, you should be fine with a good tune. Some engines last fine with 550 on stock internals, some blow stock, on stock internals. The tune is key.

**LS2Tuner** · 03-18-2007, 07:07 PM

NO thats not too much. We have went 8-10 lbs. on stock shortblock.
I would say the key to life period would be a good fuel system and a good tune!!!

**Chevythunder17** · 03-22-2007, 06:31 PM

What is your current compression ratio and cam specs? You don't want to have boost bleeding off due to a narrow LSA, but you don't want to have your cylinder pressures spike either.

**Turner8396** · 03-29-2007, 09:39 AM

I think your stock internals will handle the supercharger. I'm running 9 lbs of boost on my Vortech supercharger with intercooler. I'm running 10.45 @ 130mph. 1.391 60 ft time and yanking the front tires of the line.

**Liquifire** · 04-17-2007, 11:36 AM

You should be able to safely run 7 PSI with a good tune and fuel supply. Do check into your cam to see if the specs are suitable for FI purposes(most likely they are not designed for it)