One topic that often overlooked when the subject of drivetrains comes up is the transaxle. With all these new engine/transaxle combos coming out, it just accentuates GM'* inability to put a solid transaxle behind (beside?) the L67.
With the Series III L67 having 260 HP and 280 FT. LBS torque, the 4T65E-HD transaxle is at it'* rated torque limit. Rather than come up with a beefed up 4T65E-HD, it seems GM prefers the 4T80E because it can take much more power but it'* a bigger package.
Signs are the L67 and 4T65E-HD will have limited life from here...too bad because it'* a durable engine that responds well to mods, and it most be cheap for GM to produce. Guess the W and H bodies will still use it for a time but...
40th Anniversary Edition
13.074 @ 106.579
FWI | 4" Intake | LQ4 | N* TB | Custom TB Adaptor | Ported SC | 2.8" Pulley | Custom Intercooler | Ported LIM | Custom Ported Heads | 105# CC Springs | Modded Retainers | Oil Restricted Push Rods | CC OE-R Lifters | XP Hot Cam | TOG | HF Cat | 2800 ST | 3.29 Gears | DHP PowrTuner | LC-1 Wideband | Engine now retired |