"Are today's LS motors capable of sustaining much higher compression on much lower octane fuel apples-to-apples with the design of a older Pontiac ? " My wife's 2002 5.3 LS Avalanche rattles on 87 octane when pulling a horse trailer-and it has a knock sensor that should adjust timing.
"I test drove a new stick 2006 GTO with the obvious LS. based engine I did not take it to redline and speed shift it but I was soooo not impressed with the power and driving experience ". My hard core Pontiac buddy(he has 30 classic cars most Pontiacs) let me drive his '05 and it sure hooked me. My 2004 auto with less HP and just a computer tune runs 13s, when it hits second it better be pointed straight. Something not to many stock old Pontiacs do. My 6.2 2015 truck has way more pulling power than my '97 350 truck, and way better gas mileage.
That said a classic Pontiac (or even a Chevy) needs a classic motor in it. Remember not that long ago lots of SBC TPI swaps-look out of place now. I think LS swaps will at some point also. But a classic muscle car with a classic motor never will.
__________________
Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune [email protected]
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed
|