Diesel Place : Chevrolet and GMC Diesel Truck Forums - View Single Post - Craiglist ads that we all want to buy
View Single Post
Old 01-13-2015, 09:22 PM   #2919 (permalink)
respect the DB4 5722....
turbonator's Avatar
Join Date: Oct 2009
Location: lac superieur, quebec
Posts: 12,490

[QUOTE] As the turbos said the RPM is governed...somewhwere around 4000rpm, which is weird because the ad says that the max speed in D (1:1 since it's TH400) is 55mph/88kmh. I just did an RPM calculator and @ 55mph with 3.08s (the blazer CUCVs had 3.08's correct) and I assumed a 31" tire RPM would be more like 1900, so in theory you should be able to bury the needle in one of those Blazers.

If the gearing had been changed all the way up to 4.56 and kept the 31" tires it would still have 1000 rpm more before it hit governed max, so i don't quite know what that guy is talking about

I know with both my trucks and 4 different engines I've been able to bury the needle with each one. Th400 and 4.10s[ /QUOTE]
needle burying and engine swapping...... hmmmm...

i think probably the injection pumps are governed lower than civilian, around 32-3400rpm, so they had some longevity with the "drive it like you stole it" policy....
Building power "Sanford and Son Style"

1998 gmc 3500 RCLB/4X4, 4L80E, DB2 converted, 6.2l #599 casting, bored .040", water-cooled garrett gt3271G turbo, CTS manifold, j-code intake, .290" IP, delphi injectors popped to 2300PSI with modded tips, 3" D.P., aero stainless muffler, triangle tip side pipe, Holley Red lift pump @ 5PSI, canton racing oil filter delete, remote filters, custom 5000psi gates oil cooler lines, over-sized long oil cooler, over-sized hayden tranny cooler, other than that its a "stock" engine....

acolytes of the "aggressive buddist's" principles since march 13th 2014

Last edited by turbonator; 01-13-2015 at 09:23 PM.
Offline   Reply With Quote