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View Full Version : Out with 302 and in with 300-6??


godtool
08-11-2011, 07:33 AM
My neighbor wants to buy a 1991 F150 that has a blown up 302 yet wants to know if he can take the 1988 straight 6 from his F150 truck and put it in the one with the 302. Both are standard and EFI. I've never done a switch like this and told him the wiring harness may cause problems.... Is it more trouble then its worth?

patford
08-11-2011, 08:45 AM
engine towers could be different , rad , exhaust

m j
08-11-2011, 07:20 PM
yes it is more trouble then it is worth, cause it would be a 6 cylinder

mus-Tard
08-11-2011, 08:29 PM
cables, air box, mounts l am guessing, harness, computer, and thats just off the top of my head. l was looking into doing that when l had to change my engine and decided that it was not worth it.

regulate34
08-11-2011, 10:45 PM
the big six rocks. but for sure not a simple swap

4skin
08-12-2011, 12:28 AM
the 300 makes just about the same power as the 302 but more torqu
worth doing depends on the trucks condition
all the parts will swap between the trucks so its doable

epic3
08-12-2011, 02:45 PM
It only makes about 5 lb-ft more torque then the 302 but about 20 less hp.

regulate34
08-12-2011, 07:38 PM
It only makes about 5 lb-ft more torque then the 302 but about 20 less hp.
yeah but my truck will lug along at 200rpm like a tractor and not stall

4skin
08-12-2011, 09:59 PM
my 71 had just about every size ford motor in it from a 300 to a 460 and wound up with a six in the end
and it worked best wheeling with the six

epic3
08-12-2011, 10:06 PM
yeah but my truck will lug along at 200rpm like a tractor and not stall

drive alittle faster grampa

In The Zone
08-14-2011, 07:13 AM
it is worth it and will clean up room under the hood

Punk in Drublic
08-14-2011, 07:38 AM
love the 6. built a snotty one up a few years ago. great workhorse.

godtool
08-14-2011, 08:58 AM
Thanks for the help. My biggest concern is the wiring and elewctronics for the efi, what needs to be switched so the truck knows theres a 6 in there vs a 8?