Originally Posted by cosworth
My truck is a 1969 J3800 originally had the Buick 350
'71-79 is for the 360 engine. IIRC '80-on is the same except for the overflow outlet direction.
There are purpose-made radiators for the SBC swap available from BJ's and likely from other places. http://www.bjsoffroad.com/Radiators_c_56.html
I don't know if the core support for the 350 has the same radiator width as the later 360 core support, but it likely does. The 6-cylinder wagons have a narrower radiator (left to right), but I expect the V8s are all the same in this dimension.
Why don't you measure the core support yourself and compare to the radiator specs? Measure and post the numbers here. I would be happy to take a tape to my J-truck and see if the bay in the core support is the same size.
Or, you could use those measurements and buy a hot rod radiator that's the right size from somewhere like Summit Racing. https://www.summitracing.com/search/part-type/radiators/universal/yes?N=4294949245%2B4294951518&SortBy=Default&SortO rder=Ascending
Then you will get a choice of outlet locations too.
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk
Last edited by tgreese : 10-17-2018 at 12:40 PM.