Quote:
Originally Posted by BigAls87Z28
The LT1 is loosely based on the Gen I small block, only the Gen II's had a reverse cooling system and more advanced fuel inection. Outside of that, an LT1 block looks no different then an L98 or any other SBC 350 made since the 50's.
The Gen III engines were an all new design. They share nothing with the Gen I/II engines outside of bore spacing.
The GenIV engines are an upgrade from the Gen III design, but the L92, LS3 and LS7 have a totaly different head design. Gone are the cathedral ports of the GenIII and early Gen IV V8's, back are the more traditional rectangular ports.
The L92/LS3 and LS7 heads flow tremendus amounts of air from the factory, and the LS7's heads are CNC milled and hand built...some say by people, some say by God.
Oh...and Third Gens > 4th gens. If it wasnt for the LT1/LS1 combo's, GM would have sh*tcanned the Fbody in 94.
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I know that LT1's are based on original Small block Chevy's. What I'm saying is after the short 4 1/2 year run that was it..totally new design. The LS1 is what the current Chevy V8 is based off of and it looks like it will be until the LS3 is discontinued. The Gen IV isn't really a upgrade, Besides the displacement it shares so much of the same architecture. In fact the cam in the LS2 is the same cam that is found in the 01 LS6 ZO6. Sure the L92,LS3 and LS7 head design is better but again the other 90% of the motor is based on the LS1.
Also GM sold over 140,000 Camaro/Birds in 94.The last year for 100,000+ F-Body sales. It wasn't until 1996 that the F-body was in talks of being canned