Monte...are some combos just THAT much more nitrous friendly? I mean my car will go 6.teens on motor most of the time, but goes 5.70s w/ a 250 hit on at 3 tenths out. Yet your customers car goes from 7.teens to 5.70s on a 150 hit. I know I have a long way to go w/ my car, but seeing results like this make me wonder what I'm doing, lol. Or is this yet another result of running a nearly 2 ton car?
Could be several things. The smallblock is probably overcammed and has too much head to be an efficient N/A combo, for the given compression and other things. Converter is also probably a little tight. The small shot helps the efficiency of the motor and well as helps the converter on shift recovery.
In your case, I would think a 250 shot should pick you up more than 3 tenths. The converter may be a little loose. What does it fall back to on the shift on the motor and on the hose? If on the spray the drop really tightens, you probably need more stator. It could also be that the motor is fairly efficient as is and the nitrous is just not helping a lot because of cam, exhaust, whatever. HEMIs can be tough on spray. It could be that it just needs a lot more to really run....or the cam has too much overlap and is just putting the charge out the pipes. Hard to say. Look into converter question first.
How much mph does it pick up on spray?
Not sure on the rpm drop at the shift...will find out next time out for sure. It gains about 9 mph in the 1/8 and about 10 mph in the 1/4 when compared to it's best ever N/A pass w/ the tighter converter. The "nitrous" converter only slowed the car down about a tenth in the 1/4.
Doesn't seem to run as hard up top as it should. Was running the little -4 feed line last year, put -6 on it last week...thinking maybe that was a restriction. Bottle is in the trunk, so there's 14 feet of feed line.
NOS doublecross plate jetted 65x2 N, 53x2 F, 6 psi fuel, 23° timing, C12 fuel. Have not even begun to tune it from this baseline.
Have not gotten more aggressive than a 3 tenth delay on the hit due to wheelstand issues. Last time out I got a better handle on the shocks and kept it on the ground. shift at 6800-6900, cross the stripe at 7400. 4.10 gear, 295-65 radial 1.31 sixty foot w/ back tires 3.692 330' 5.710 1/8 121.6 mph 8.955 1/4 149.7 mph
