1997 Suburban 7.4L to 6.0l swap: Looking for some suggestions

[Mickeymotormount]

1) Yes, the Gen 3 engine will drop right onto the big block mounts, provided you get the 1" setback plates or mounts that adapt the big block clamshell mounts to the Gen 3 engine block. This is very easily done and plates or mounts go from about $35-$80 or more, depending on the brand you choose.

2) Yes, you will be able to keep the stock gauges and other interior things stock. The gauges can cause some trouble,but others have worked out the bugs to get them to work.

3)If your existing radiator is in good condition, it should be more than up to the task of cooling the LS engine.

4)Your exhaust may work. I would certainly try to obtain everything from the donor truck that the LS engine comes from. That will give you the options you need to get something to work. I was lucky and grabbed the entire exhaust for my swap and ended up using the whole thing in my '93 Ext. Cab Long Bed 4X4.
The exhaust will need at least 2 if not 4 O2 sensors on it, depending on the flash/tune of your PCM.

[willis68nova]

Great info guys! Thanks! I think I might begin looking for a donor truck...

Any suggestions on years good or bad for the 6.0L?

[Mickeymotormount]

If you're looking for a 6.0, anything later than '01 or '02 since they have the aluminum heads. '99-'00 have iron heads. My '99 engine runs just fine with the "old iron sides" but I'm sure later engines run better with the aluminum versions.

[willis68nova]

Thanks everyone I think I have enough info to begin searching and see what I can come up with. Thanks again!

[bigdaddy9x6]

this is a little off topic but i want to ask this question, i have a 56 belair that id like to put the 454 tranny combo in,, im looking for any donor trucks suburbans whatever that is cheap for the engine tranny , id like it to have the buckets seats tilt ac rear end id like to be able to use as much parts off of donor as possible. is this a ok way to go or is it a bad idea? thanx any info would be helpful