Originally Posted by an8sec70cuda
Originally Posted by GY3

Assuming everything is optimized...

8.0 with 300 shot.

7.70's with 500 shot.

My WAG.

It's slower NA than it used to be by a couple tenths.


Mine is too, although I'm way slower than you. Used to run 11.20's pretty easily but now 11.30's - .40's.

I attribute it to the colder plugs, plate restricting flow and maybe the thicker VR1 20w50 I started using in conjunction with nitrous. Maybe the weight of the added hardware for nitrous as well? Freaked me out at first thinking it was having issues but the more I thought about why... shruggy

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.