So Im keeping an eye out for the right 300 to replace the 240 in my 65 F100. Since I want to go back to a 3 speed too, Im hoping to find a 300/3.03 3 speed combo that will work. There seems to be no shortage of 300 sixes for sale locally on F150s being parted out. Im wondering if you guys could give me some idea of what year ranges I should be looking at if I want it to bolt up without doing any mods.

 

Mr. Wilson ND can declare the last year that the 303 was used. My recall when they made big change in 73 the column shift started disappearing fast. I have a sayin Damn a full grown Ford truck that can't shift it's own gears, so the 3 spd was the first to go from my truck.

I don't know if there are fitment issues with the 300 out to the end. I don't care for them so I don't follow them. There are some later split manifolds and 4 barrel intakes to add more umpth. If I was gonna look at that option I would also be looking at an AOD to bolt up behind.


John

 

I'm doing the same thing (looking for a 300) and I want to keep my column shift. I'll keep the original 240 since it came with the truck.

I love the column shift and all the comments it brings from folks (not to mention that it's just fun).

I'm finding that good running used 300's aren't plentiful in the Houston area either.

 

Any of the later 300's will bolt in, but after '86 they are fuel injected and have no provision for a mechanical fuel pump.

 

would you guys consider just rebuilding your 240 to a 300, it just requires a crank and shorter piston rods. 300 are stroked 240's same block, head and all of the rest of the bolt on parts, just a thought

 

Im certainly considering just making my 240 into a 300. I dont plan on doing my own rebuilt but others have suggested just ordering a rebuilt 300 and using my 240 as the core. Not sure if sending back a core would be worth it for me...I live in Alaska.

If I could find a local rebuild shop to do it for a reasonable price, Id do it. But I get insane quotes up here for a simple rebuild...like $4000! And that's with me R&R ing the engine!

I see a few remaned engine shops online that do "mail order engines". They sound pretty reasonable at about $1500 for a straight six. What (if any) of these companies do you guys recommend?

 

wow $4000, what if you provided the rebuild parts and have the shop do the labor and dirty work.

 

Ive got another possible donor for a 300 to replace the 240 in my 65 F100 2wd. It's in a 84 F150 4wd. Can you guys confirm that will slide in and hook up effortlessly?

The donor truck was well cared for with just under 100,000 miles. it was then parked and sat idle for years. Then the guys idiot son got under the hood and started to rip and tear. It appears he cut all the wiring to the engine and took off the carb and smog control crap. He also cut the exhaust pipe off below the flange and seems to have stabbed another distributor in place.

It would be a real puzzle to put together in the truck it's in. But it would probably make a good solid rebuild candidate. I'd just like to make sure there wont be any fitment issues or performance problems going into my 65 F100.

Also, it has a 4 speed manual trans. but like I said, it's a 4wd. Could it be adapted to work in my 65? Otherwise, what other transmissions would it bolt up to? I suspect the 84 300-6 would match up with the old T-18 that's currently behind the 240-6. And if I can ever get ahold of an original 303 3 speed, would that transmission work with the 84 300-6?

 

I put a 300 in mine with no problems, I even put the intake/exhaust from my 240, along with the original distributor, I did have to change my distributor gear from the 240 to the 300, mine was a 3 speed too, but I changed it to the new process 435. Hope that helps.

 

Yes it will fit. You will need to use the early style motor mounts.

 

1984 300 I-6 has DuraSpark electronic ignition, with a POS TFI module torx headed screwed to dizzy. Also has an EGR valve and a smog pump, the exhaust manifold is different than 1965/83.

The 4 speed trans could be the "weak sister" RTS TS-OD Top Shift 4 speed overdrive, the New Process 435 or Warner T-18.

3.03 3 speed manual all syncro trans used 1963/86, but the 2 shift rods are 1965/66 ONLY. Where will you find these 2 shift rods...especially in the frozen north?

IMO, fix what you got. Shipping a long block from Bellingham up the AK Marine Highway won't be cheap.

 

Really old thread but I am just getting to do my restoration. Was wondering what exactly you mean by "early style mounts". You mean keep my 65 engine perches as well as order rubber mounts for a 65? So it sounds like the engine block didnt change but the perches did.

What it looks like I'll be going back in with is a remaned crate 240 or 300. So I wont really know what year the block came from.

 

300 I-6 & 3.03 3 speed: 1965/83 F100; 1969/87 Econoline; 1975/86 F150.

1965/74: The 240 was standard equipment, the 300 was optional. From 1975, the 300 was standard equipment as the 240 was cancelled at the end of the 1974 model run.

 

Putting the 240 cylinder head on the 300 will give an increase in compression and a bump in power output.

 

Yes, the perches and the rubber mounts changed around '78 I think. Block mounting is the same thru all years. Use the '65 style mounts and perches