351w in 90 yj

[MikeB]

ive decided to replace my 4.2 with a 351 w. i will be starting the swap very shortly. my main concern is going to be the cooling and exhaust systems. anyone know of any good rads that i can fit in my jeep that will provide adequite cooling for this motor?

is anyone on this forum running a side dump exhaust set up? (exhaust outside the frame)

 

[SteelHeadz]

Go with an Aluminum Radiator with at least 3 row, then use an Electric fan and an adjustable Thermo switch. I've had this set up for at least 5 years and haven't had any problem with the Cooling system. Bounty_Hunter has a cool fan module he just purchased. i beleive it's a Dakota Digital.

 

[Bounty__Hunter]

A stock radiator rebuilt to 3-core will work also.

Here's the electric fan controller: http://www.dccontrol.com/0820.htm