12 valve vs. 6.5 swap
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12 valve vs. 6.5 swap
i am looking into purchasing an 84 gmc jimmy with a 6.2.if i do get it i just wanna know what kinda work would be involved in the swapping of either of these motors . I love the cummins and already have 12 valve , but would a 6.5 drop right in?and how much would the cost run me for a turbo charged 6.5?iwould rather just sell my cummins as a whole cuz i dont have a good shop to do alot of work?what do you guys think?
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If you can find a used banks kit that would be the easiest. If you cant find some 6.5 parts. You will need a turbo. 92,93 will be mechanical waste gate newer ones are vacuum and you will have to convert them to mechanical not hard to do. A passenger side exhaust manifold,cross over pipe, and a down pipe. Find a F code non egr intake and upper intake. Any of the 6.5 turbos you will need to turn up which is not hard to do and I would not run more than 15 psi. One reason is you would be risking blowing a head gasket and the 6.5 turbos will not supply the volume needed to maintain more than that. Any of the parts I mentioned are not hard to come by.
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Banks says that it will gain 60 hp and 115 lb-ft of torque at the rear wheels. Now I don't know how much faith I put in there numbers because they also claim theres got 11mpg and I have never owned a 6.2 that got that bad. I am going to say it would be somewhere around a 6.5 200hp and mid 400 lb-ft but I have heard th turbo 6.2 will out perform the 6.5 I don't know because I have not had time to put my Banks kit on my 6.2.
Putting a 6.5 in it would be ok but they are basically the same as the 6.2. A Cummins would be easier than a D-Max but if I was going to go through the work I would put a D-Max in it.
Putting a 6.5 in it would be ok but they are basically the same as the 6.2. A Cummins would be easier than a D-Max but if I was going to go through the work I would put a D-Max in it.
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Mike H (06-21-2010)
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