'97 Express 383 Marine intake

[L31MaxExpress]

I'm not trying to step on anybodies thread, but did they ever make the express vans in a 4wd/4x4 model?

Thanks.

GM built some 2003+ as AWD. Quigley did 4x4 conversions and IIRC still does.

 

[L31MaxExpress]

I read a post (The Ultimate 88-98 Performance Toolbox), with a section about stall converters and started looking in to it. I sent my stats to two converter manufacturing companys. One recomended one that was 200 rpm over stock (which doesn't seem like much) and the other recomended a 2400 rpm stall. Raptor Engines (building my 383) recomended a 2200 to 2500 stall.
Is it worth the cost to go to a higher stall? What is the pro's and con's?

The converter in my 4L85E was custom built local, brake stalls about 2,900 rpm behind my 383 at ~1/2 throttle. Any more throttle than just starts pushing the van through the locked front wheels. The front wheels locked in place by the front calipers will just slide forward while the rear wheels push the van forward. That being said some hate higher stall converters but I love them myself. Properly matched to the engi e setup, they put the engine right into the meat of its power curve as soon as you get on the throttle.

 

[marcgyver77]

I have been having problems with my 411 pcm reading my O2 sensors. (I beiieve it's because they are too close to the combustion chamber.) Looking at parts list, I see that the '03 Express uses a differnt O2 sensor (213-3867) than my '97 (AFS 105). Should I update my O2's ? What would be the best O2 sensor to use?

 

[L31MaxExpress]

I have been having problems with my 411 pcm reading my O2 sensors. (I beiieve it's because they are too close to the combustion chamber.) Looking at parts list, I see that the '03 Express uses a differnt O2 sensor (213-3867) than my '97 (AFS 105). Should I update my O2's ? What would be the best O2 sensor to use?

AFS105 is what I run in my 97. Have worked with the black box, the 0411 and the P59.