GMC 12valve conversion

[RyanB]

Hey All-



I am posting this in both the 12-valve forum this one.



I have a 1989 GMC 1-ton reg-cab 2wd Dually. I am in the process of doing a major conversion with all the best parts!!!!

I am dropping in a 1996 12-valve (215hp) into the truck with a NV5600 behind it with a NP241HD T-case (Yes I am also converting it to 4wd) I am also putting in a Dodge Dana60. (OKAY... . I know this isn't the axle of choice... . I would have went with a Ford Dana60 any day but I am going with the coil springs seeing I have the 2wd frame). As for the front suspension amazingly it should all fit together great. I am using the GMC coils which are smaller in diameter and 4" shorter because the dodge coils would hardly fit into the pockets and gave me way to much lift!!! In the rear I am going with an AAC 11. 5" out of a 2004 GMC dually. I chose that axle over the Dodge AAC over the Dana80 because it is said to be a tougher axle and has a much better posi in it seeing the selection of lockers are still limited.



Here is the rundown of the cost of parts that I am using and I think I got a really good deal and all the drivetrain is rebuilt with 6 months/10,000 miles warranty.



$3000cdn - 1996 Cummins 12-valve (215hp)

(3months/5000miles warranty



$3000cdn - 2003 NV5600

$1000cdn - 2000 241HD t-case

$1500cdn - 1997 Dodge Dana60 (dually) with

the suspension parts

$2000cdn - 2004 GMC 11. 5" AAC (dually)

$500cdn -front and rear drive shafts

________

$11,000cdn =$7,998US



I thought it was a pretty good price. Anyway, here is my question. It will be almost the begining of Sept before I get the truck on the road. I am looking or was looking to bomb it right from the start to about 450-500hp. I also live up in Ontario, Canada and have real winters!!!! should I wait till the spring to do the bombs? what should I do now? I was planning on an ATS manifold and HX40 turbo and of course an SBC (probably the new FEW). If I were to run these 3 on the stock engine would it effect anything? then in the spring I will put in a good plate, big injectors. What all am I going to need to get a 215 pump to 500hp? I am getting the head O-Ringed before I install the engine!!!.



Does anyone else have anything other idea's on things to install while I have everything apart (engine or other wise)???



Thanks in advance... . Ryan

 

[BV]

Sounds like a nice set up. My only advise is that it's always easier to put parts on them while the engine in on the floor, work bench or stand.

 

[RyanB]

Yeah, you know I thought of that too. But due to the winter I would rather run it at almost stock levels to get a feel for it and then bombs away come spring!!!!! It will also give me some figures to go by as far as millage and what not.



Ryan