How good is the 402???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bglad420 · 12-30-2005, 04:07 PM

I have a number matching 70 GMC LWB Truck w/ 402BB TH400, 373 Posi, 97K original miles, rust free, all original...I'll post pics later (Main bearings went out

) But What I was wondering is since the 402 is pretty much just a boared out 396 from factory, will this motor loose a lot of strength if I get I machined. I plan on supercharging this motor, with a Vortech setup Let me know what you think How good is the 402BB???? Thanks!

12-30-2005, 04:07 PM	#1
bglad420 Registered User Join Date: Dec 2005 Location: Bellingham, WA Posts: 167	How good is the 402???? I have a number matching 70 GMC LWB Truck w/ 402BB TH400, 373 Posi, 97K original miles, rust free, all original...I'll post pics later (Main bearings went out ) But What I was wondering is since the 402 is pretty much just a boared out 396 from factory, will this motor loose a lot of strength if I get I machined. I plan on supercharging this motor, with a Vortech setup Let me know what you think How good is the 402BB???? Thanks!



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.