Nitrous on 6cyl

Lets understand a few things.
1) nitrous can be used on any engine
2) the milder the engine, the more effect it will have.
3) nitrous has the biggest effect at the launch.
4) if you go lean, kiss the engine goodby. But don't go too rich, either.
5) nitrous is addictive.

This might get a little long. Lets start with my 66 Cuda with a 170.

Engine is a stock short block, with a mild cam 264* dur 222* at .050 and .434 lift.
Head is milled .125, compression ratio about 10-1. 340 valve springs.
Home made 2bbl intake from a stock 1 bbl manifold, Holley 500 2bbl. Clifford headers.
MSD 6a with a stock Mopar lean burn distributor.
Nitrous system is a fogger.
Trans is a Push button shifted 904 with a manual valve body. 8 inch converter.
Rear is a 3.91sure grip 8 3/4. Tires are 10x23-13's. Weight 3250 with driver.
Carb jetting is 76's. Timing will vary from 15 degrees total to 25 degrees total, depending on the amount of nitrous shot. The bigger the shot the less timing. Timing is fixed, no centrifical or vacuum advance.
Last fall I went to the track, with a 225 shot on it. Made a motor only pass, and went a high 16 sec pass (I forget exactly how quick). Then I turned the bottle on and went a 12.90 at 101.6 mph. Three 12 sec passes. Next time out, at 1/8 mile track, car was a little "off". Second pass, it ate #4 piston. I have not taken it apart yet to see what was the cause.

My 66 Valiant was built as a low buck car, with a stock 225 short block, mild cam and milled head. Offie manifold 390 vac sec Holley carb, clifford headers. MSD 6a, mopar lean burn distributer. 9 1/2 inch converter, 904 manual VB, 3.91 gear 28 in tall tires. Car weighs 2500 lbs without driver.
Nitrous system was two 125 HP plates. Never did run the second plate. Over about 4 years, only ran the car once in a while, as the Cuda was the primary car. The Valiant alwas had a problem with a "phantom" misfire. Some days the car would be fine, other days would have the misfire. Never did fix it. That is why I pulled the engine, and put in the new 170 with the nitrous system, fuel system, and ign from the Cuda.

To be continued:
Continued:

The new 170 in my 66 Valiant has a lot more done to it.
Bored .030 with TRW forged pistons,with valve reliefs. Stock recond rods, and crank. Balanced. Deck cut to .010 deck hight. Mopar purple shaft .528 lift, 284 adv dur. Mopar dual valve springs, 1.70 intake valve and 1.44 exhaust. Bowl blending. 3/8 pushrods. Cloyes double roller timing set. Head is milled to 39 cc chambers, shim head gasket, about 10.6 CR. Ign MSD 6A, with a stock lean burn distributor, The manifold from my Cuda (modified stock cast iron 1 bbl) and Fogger system, with a 125 shot.
First time out, 1/8 mile, ran 10.06 at 68.7 mph with a 2.284 60 foot. Had the 28 inch tall tires on. Car was a slug off the line. I gave up too much bottom end torque with 50 cubes less, and the big cam.
Much better with the nitrous. 8.28 at 81.6 mph with a 1.824 60 foot. Had the 23 inch tires on, but had a little wheel spin. Car weight is 2718 lbs.
Will be a couple of weeks before I can run the car, again. Need to install a line lock. Check the engine, to make sure everything is OK. See if I can get the suspension to work better. Biggest thing, GET SOME MORE MONEY.

Any questions?