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CPT 9" non L/U "N" stall??

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i have heard different opinions and it varys in different cars.they are supposed to stall 3600. i just bought a new NL billet 9" N stall from ac(cpt). it stalls 2700-2800 @ 0 psi and goes up about 100 rpm per psi of boost(3700-3800 @ 10psi). might be a tad loose. be careful what you use for the rpm readings. i thought the stall was very loose using an old auto meter tach. it read about 700 rpm higher than it should(4500 @ 10 psi) i then checked it with my FAST data logger to get the right readings..
 
Mine must be really losse then. It stalls at 3500 at 0psi.......
 
I think that the N is the Stator, but please don't quote me.
 
WSLN 6 said:
Mine must be really losse then. It stalls at 3500 at 0psi.......
what tach are you using? if i read from the auto meter tach im at 3500 rpm @ 0 psi also.
which rpm reading is correct, the auto meter gauge or the FAST system? i wish i knew but art did say i should be about 3300-3400 rpm at 10psi, therefore id have to say my tach is out to lunch.
auto meter=4500 @ 10psi
FAST system=3700-3800 @ 10psi (a little higher than art predicted).
 
It is an Autometer tach, and seems to be right on the money, same with Directscan.My 1 to 2 shift drops 300 rpm. 2nd to 3rd doesn't drop at all......
 
WSLN 6 said:
It is an Autometer tach, and seems to be right on the money, same with Directscan.My 1 to 2 shift drops 300 rpm. 2nd to 3rd doesn't drop at all......

You're convertor is way too loose. No doubt about it.
 
c&cgn said:
You're convertor is way too loose. No doubt about it.
my 2nd-3rd shift drop was about 400rpm with my previous a/c convertor, which was about 2-300rpm tighter than this new one. winter weather hear therefore i cant test the car at wot with the new convertor yet.
 
Those little 3/8" bolts

I wasn't to happy to see the mounting pads tapped foir 3/8 bolts when the flex plate has 7/16" holes. I thing I will drill the converter pads out to 7/16" What did you guys use for bolts?

thanks
9sec.
 
9SECVSIX said:
I wasn't to happy to see the mounting pads tapped foir 3/8 bolts when the flex plate has 7/16" holes. I thing I will drill the converter pads out to 7/16" What did you guys use for bolts?

thanks
9sec.
i upgraded the fasteners from grade 5 to a grade 8. kept it 3/8 though, just used a large flat washer, lock washer and some red loctite. no problems so far.
 
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