Ozz1967

iTrader: (4)

Hey guys,

I'm going to be replacing the stock torque converter in my 84 T/A with one that more matches the cam profile which calls for a 2200+ converter. I've got a 355 installed with a Lunati Voodoo cam, world sportsman II heads, Edelbrock performer intake, hooker 2055's and custom 3" exhaust. The company says I should run a 2200+ converter with this (not sure how I missed this when I originally installed it but oh well) so I need to replace my stock converter. Would you go with a 2400 or say a 3000? I've heard the end of the argument from guys in my car club who dont' like their 3k converters so are going back down to a 2400) and from Atilla (for those of you who know him from here) who says that unless i like geting gone from go with a 2400 every time I leave from a stop light, that I should go with a 3000. He says this would give me better driveability until I mash the pedal at which point it does the Dr. Jeckle/Mr.Hyde thing (his words). I"m planning on using this as my every day summer car and just cruising around with occasional trips to the track. So, for those of you with experience with both of these size converters, I"m looking for some input. Any insight would be greatly appreciated. Thanks!

AlkyIROC

For street/strip you want a converter stall about 500 rpm into the cam's powerband. For full race, it's about 1000 rpm into the powerband. Too high a stall is just as bad as too low a stall.

What's the camshaft advertised (total) duration?

Ozz1967

iTrader: (4)

On lunati's web site they recommend a 2200+ stall converter.

Here is the CAM specs:

Brand Lunati
Manufacturer's Part Number 60121

Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,800-5,800
Intake Duration at 050 inch Lift 219
Exhaust Duration at 050 inch Lift 227
Duration at 050 inch Lift 219 int./227 exh.
Advertised Intake Duration 270
Advertised Exhaust Duration 278
Advertised Duration 270 int./278 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.515 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.530 in.
Valve Lift with Factory Rocker Arm Ratio 0.515 int./0.530 exh.
Lobe Separation (degrees) 112
Computer-Controlled Compatible Yes
Grind Number VDSC-270
Quantity Sold individually.

AlkyIROC

Operating range is 1800-5800. A good street converter should have a rated stall speed around 2300 just like Lunati recommends. For full race, 2800 would be better but I wouldn't recommends a stall speed that high for that cam on the street.