I can't seem to find what I'm lookin for with the search, so here goes.

Will I see much improvement going with a 'reverse grind' cam? (i think thats what its called)

Swapping the 4 & 7 events to correspond with intake flow.

I've heard 15+ horsepower, but is it worth the extra expense in the cam?

FWIW this will be going into a stock bottom end, highly ported stock heads, 2.00/1.55 valves, 1.6rr's in an Impala SS, with a T-56 and 4.56's.

 

I have no experience with it personaly, but we discussed this at the track a month ago with a gythat was running one in his camaro SBC powered dragster. He said the first thing he noticed was the smoother engine operation. he thought it reved smoother too, but he had no way of proving it to himself . He had done alot of other stuff at the same time, so he doesnt know wether it gave him the power or the combination.

He wants to try it in a street car as well.

 

I don't think this will work on a closed loop setup because #4 and #7 injectors wires should be swaped and they are on different banks.

 

The biggest problem is that of the ECU.... I've done them on LT1's but you should only do it if you have a ECU like a DFI, FAST, BS3 etc... Then the computer can know which bank is doing what.

I basically does make the motor smoother and helps crank life. Mostly what is going on here is that you are making things more stable harmonically in the crankshaft and this produces power gains.

Bret

 

plug wires as well

 

SStrokerAce you have pm

 

Got you back Jason

 

Could the stock PCM be tweaked to run this??

Also, I guess it would mess with the O2 readings since the injectors would be swapped, but if I keep it running well, and scan it regularly then it could theoretically work??

What if I moved the O2's to the x-pipe, so they were reading the same thing?

 

Yeah I guess a X Pipe placement would work but it would make the O2's useless bank to bank.

You could run it if you did a lot of work with individual cylinder tuning and EGT stuff but at that level you would be better off with a aftermarket ECU.

Bret

 

Whats an ECU run? and how hard is it to work with?

 

Yeah that's the fun part... best thing to do is get a Accel DFI, FAST or BS3 and find someone who can tune it.

Bret

 

They start at $2000.00 and go up. It's a steep learning curve to tune it yourself(without hurting the engine) but you could have a DYNO TUNER do it if you can leave the button's alone afterward.Until you learn the system and know what you are doing,of coarse.

 

The stock PCM can be made to run in open loop or power enrichment mode all the time, so no corrections will be made to injectors pulse width based on O2 sensors feedback.
Keep in mind that some cars are originally programed as such, I have 2 of them.