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Apr 2, 2005 | 07:41 AM

cjric

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300 six question

hey all. First post here. Looks like alot of good info! Im well versed in Jeeps, but not Ford trucks, so hopefully you can help me.

Anyways, I have a chance to buy an impecibly maintained 95 F-150 300-6, 5speed, 2wd. The bad news is that the motor is blown (oil pump failed on the highway). The good news is that (1) I can get it for 350.00 (2) I have a running 300-6 out of a 74 F150 sitting behind my father-in-laws.

My question is, will the 74 motor bolt up in place of the 95 motor? Any changes to bolt pattern, intake, etc. that will need to be addressed, or can I simply pull the 95 block/head and drop in the 74 block/head and put everything back together?

Apr 2, 2005 | 07:58 AM

frederic

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From: New Jersey

The bell housing pattern is the same.

since the 95 is EFI, and the 74 is carb, if you want to retain the EFI in the newer truck you'd need to swap intakes on the engine. I believe, but am not 100% sure, if you have to swap the heads or not.

You'll be able to tell however as you line up the intake to bolt it down whether the ports are the same size/shape more or less. A minor mismatch isn't the end of the world, but if they are way off you might sacrifice power and idle a little bit.

Welcome to the world of Ford

Apr 2, 2005 | 08:04 AM

cjric

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i want to keep the efi. anyone know if the heads changed? If so, when. I might be able to pick up a cheap 84-85 f-150 with a remanned 6 w/ 20k on it as well.

This whole venture would be most likely to sell the truck and turn a profit. There's a slight chance I'd keep it for a dd to replace my grand cherokee.

Apr 2, 2005 | 09:19 AM

tex94F250

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From: N. Gwinnett Co. Georgia

If you get the '95 running and drive the 300 I-6 you may never want to sell it. It's a super powerplant and is loaded with torque. Makes a great daily driver. The only thing you'll miss is space if the truck is not an extended cab. Your cargo handling ability will certainly go up.

Apr 2, 2005 | 10:19 AM

Franken-Truck

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From: Virginia Beach

87' was the first year for EFI for the Six. The heads are slightly higher compression, and are a fastburn(?) design. Mine also has what looks like air injection into the heads, your pre 87' head shouldn't have these holes. You might be able to rebuild the original EFI head, and use it on the 70's block (if the head isn't seized up too). Another thing you should look for is if the 70's block has a knock sensor hole (probably not, but still worth the check). I think its down near the distributor, but can't say for certain. The 1 sensor I have never replaced

(knock on wood).

Good luck, let us know how it goes

Apr 2, 2005 | 04:04 PM

cjric

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just found another truck! a buddy has a early-mid 80s f150 with a 6 in it w/ about 6k miles on it (factory remanned). I can get the whole truck for about 200 bucks.

So, I should be able to easily swap the EFI head onto the 80s block w/ no problem, right? Oh, EFI head is fine per mechanic who diagnosed the bad oil pump and bent crank.