JJONES

My Engines Are 525sc Now,If I Were To Get Bigger Blowers,will The Engines Hold Up?I Know I Will Need To Change Some Jetting And Timming,cut Holes In My Hatch Etc,anything Else,200 HRS NOW!IM THINKING 871

offshoredrillin

yea you forgot yutz

GOODT

Im thinking bigggggggg head aches!!!!!!! leave them as they are turn key blower motors

JJONES

So Far Ive Decided To Just Ad Superchillers,and When Its Time For Overhaul,redo Everything,thanks For The Opinions Though!

Griff

Somebody here switched to 671's on his 525sc's a while back and kept the same 5.5# of boost and lost about 4 mph on a 35??? Fountain The bigger SC's take a lot more hp to spin.

PPlay33

I can give you my experiance for what it's worth. I replaced a 250 holley with a blowershop 871 on a 502 and picked up 3mph and alot more punch. I also took a pair of 525sc's,added whipple innercoolers and a slightly smaller pulleywhich added only 1psi over stock boost , and picked up 4mph and stronger accelleration! Good luck. By the way, jetting was still good on the 525 after the cooler and pulley install.

JJONES

Cool To Know!im Going With The Superchillers Only!thanks For The Input