Can you put a 6 cylinder engine in a chevy suburban ?
What year but more importantly..... Why?
Sure you can- if you are a good mechanic-
YEAH But............ WHY??????
It's possible, but probably not powerful enough to move that big hulk, and by the time you add-on all the "good stuff" like turbo, intake, & exhaust, (slap yourself in the head) you could of had a V8 !
Maybe a Cummins diesel six? Big bucks, for torque & stink. And many mods to change over more $$$. But towing power is great for like a trailer or boat.
Work on getting your 350 V8? more efficient like small valve & or small cc combustion chamber cyl heads from a junkyard (reconditioned 302- 307" heads) RV duel profile cam, small CFM 2-bbl Holley fuel injection or 2-bbl throttle body, tube headers, cold air intake, K & N cone type air filter, cat back 3" exhaust, overdrive trans, bigger dia. higher pressure commercial or military type tires for less rolling resistance, etc. [ I got 21+mpg cross country out of my 1970 C-2500 Chevy pickup V8 granny 4-spd. with a 2-bbl carb, tube headers, RV hyd. cam (less intake lift & duration, more exhaust lift & duration) K & N filter w/ cold air intake. And a camper on the back too! ]
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