Hi,

This is my very first ever post on a forum! I hope I'm doing this correctly. Anyway here is my situation.I have recently purchased an unfinished 1939 Plymouth Business coupe project race car.The Car came to me with a very Built (383cid) LT1 and 4L80E Transmission.I need help picking a PCM build profile for this engine/tranny/car combo and then a good Tune.The block has no crank sensor (92-94 vintage) intake is complete minus sensors; the distributer is a vented Opti-spark (96-97 vintage).The car does not have a single wire in it, nor does it have a PCM of any kind.I am starting from scratch as far as a PCM is concerned.

My first step is to purchase and install all of the sensors, wires and PCM.I'm thinking about mimicking a (96-97) LT1 Camaro, or should I get rid of the Opti-Spark and upgrade to all LS components, or skip the crank sensor and go with OBD1.Your thoughts are greatly appreciated.

 

http://paceperformance.com/i-6493399...m-lt1-ls1.html

Fast makes wiring kits to hook up the LT1 into whatever you desire.

http://www.fuelairspark.com/fas/xfit...onversionhtml/

Also Painless

http://www.painlessperformance.com/webcat/60502

Optispark if you have the free cash to ditch it I would do so but if it's not broke... no need to fix it.

 

With your description of a very built 383, I would stay away from the stock computers as they are difficult to program. For a street application megasquirt is a good start.

https://www.diyautotune.com/support/...t-lt1-lt4-l99/

These guys can also help you with designing a system and tuning.

https://realtuners.com/

 

Thanks for turning me on to MS. I like what I’m reading about the ProMS3.

 

The Mega Squirt also address the 4l80e tranny controller. Does anyone have personal experience with the ProMS3 product?

 

you might get a better response if you post in a different section. I know alot of the ls guys use ms alot and you'll get more traffic than the dinosaur area.

 

[QUOTE=Fladiver64;19742194]With your description of a very built 383, I would stay away from the stock computers as they are difficult to program.

Really? 808 Horsepower, force inducted on a stock pcm. absolutely no problems, street driven car even on trips.

 

Stock PCM is only a handicap if you have an NA build that needs a ton of RPM.

Without knowing the heads and cam to get an estimate of where you need to spin it to, its hard to recommend a PCM for you. For the large majority of people, the stock computer is plenty...but can be hard to find a tuning guru like Moe depending on where you are .