454/502mpi procharged
 

Just wondering if anyone has put a procharger on either one of these engines, the speed gains,and reliability after install?
any input would be appreciated.

was it a 454 or 454mag?

That is impressive increase in speed. Equally impressive that there were no problems if they put many hours on it. I have heard that that motor doesn't have good internal componets for that kind of application.

thanks for the input

I put a M1 procharger on a bone stock carbed 1996, 454 (330hp stock)He's got over 300 trouble free hrs. And this guy only knows 2 throttle positions. Idle and WOT!!!! I jetted the carb using a EGT gauge. I highly recomend installing an EGT gauge, for under $200.oo it's good cheap insurance.
;)
My 502 mpi mag has over 200 hrs trouble free, but I have done some mods to that one.
Gil exhaust, 50 lbs injectors, reprogramed ECU, 2 bar map sensor,and EGT gauge.
Oh, and if you go that route, and have further questions. Ask us, not procharger. The guys on this forum have better knowledge than anyone;)

kanookstr
 

Do you know the increase in speed from stock.

Thanks for the info

The 454 was in a big bulky 4200lbs 22 foot Searay bow rider. it gained 12 MPH. he went from a 23 pitch to a 28 pitch.

The 502 was in my 1999 230SX stingray, That went from 72 MPH to 88.9 MPH 16+MPH. I went from a 25 pitch to a 31.5 labbed prop spinning just under 5200 rpm.