Looking into converting 1990 c1500 383 MPFI/700R4 to 6.0 or 408/6l80e

[pl4yboy]

Me too. I own a G8 for my daily driver and a tahoe with the 6L80e. If you are under geared like the G8 comes from the factory then the acceleration gained is great. While I'm not looking at this transmission to be a 9 second warrior, the truck sees city driving 95% of the time so the idea of the 6 speed in the OBS truck is different and would better serve this purpose in my opinion so this is the route that I'm goig with it. Also, a lot of G8 guys run 600rwhp with procharger and are on the stock tranny with an upgraded converter so its strong enough for my setup.

Okay. What do I know? I just had a 600hp truck with one. Ask Allen Nelson how many 6l80s they have broken and ask him if he suggests it for performance in any way. Ask any reputable truck shop. This isn't a g8. It doesn't behave the same way. It doesn't transfer weight the same way. It has more drag in between shifts. Your stock Tahoe with a 6l80 is stock. You also arent undergeared like the g8.

[Frenchy]

They don't work in a truck. For performance anyway. I was a length or so behind Justin (pl4yboy) when his 6l80e decided it just didn't wanna shift with that much power going through it. Limp mode. Results? Two blown head gaskets and it could've been way worse.