Kong X Port C6ZR1 vs 3.8 Whipple GT500

[big reg]

I’m having a hard time believing a 3.8 GT500 (running right ) can’t best that ZR1. Yes big weight difference but give that bolt on GT500 are making around 1k , wouldn’t they 3.8 blower make a lot more ? I mean the car does 130+ stock and should be around 145 with that big of a blower ? I’m no expert just asking

The ZR1’s trap over 150 nowadays with those mods. This car is full weight, stock bottom end, stock ported blower, stock heads, stock cam, stock 6 speed manual trans, full weight. Blower porting has come a long way for these cars since then too. This car only made 8xx rwhp

 

[F8l Vnm]

No doubt that Z moves the **** out but again a 3.8 blower should be enough power , no ?

 

[Tezz500]

No doubt that Z moves the **** out but again a 3.8 blower should be enough power , no ?

If you watch the vids I posted they’re getting about 1300 with the current stock motor, trans, rear set up on the 3.8L Whipple.

I personally think the car in the vid was tuned very conservatively and wasn’t at that max effort power level.

I also think weight reduction, Trans Tunning/Race Build and suspension mods may be needed to advance the S550 GT500 beyond that 8.5ish second limit we’ve been seeing.

 

[kcobra]

It's strange how the first few runs the 500 got smoked and later he held his own? Heat soak in the Vette? Tune change in the 500?

 

[bb83]

Cool video but straight line racing us boring. I wanna see some road course action.

 

[_Snake_]

It's strange how the first few runs the 500 got smoked and later he held his own? Heat soak in the Vette? Tune change in the 500?

I noticed the same thing and it sounded like the GT500 was trying different launch speeds to find the sweet spot.

 

[black99lightnin]

I too am surprised the Shelby took it so hard.