Newbie Questions
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Senior User
Joined: Feb 2003
Posts: 193
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From: Carroll County, MD
Newbie Questions
I have a 79 f100 (2wd) that I bought in July that I am slowly restoring. The body work is on its way to getting finished so that means that it is time for me to start worrying about engine things. This is a f100 "Custom" with the 300 i6, 3 on the tree. Here are my ?'s
1. What gear ratio do you think I might have?
2. Do I have a 9" rear?
3. Where might I get a fiberglass cowl hood?
4. Should I swap my 300 for a 302 or build the 300?
5. How hard is a 302 swap? or How readily avaible are performance parts for the 300?
I want this truck to run 15's or better so the engine is very important to me. Thanks in advance.
1. What gear ratio do you think I might have?
2. Do I have a 9" rear?
3. Where might I get a fiberglass cowl hood?
4. Should I swap my 300 for a 302 or build the 300?
5. How hard is a 302 swap? or How readily avaible are performance parts for the 300?
I want this truck to run 15's or better so the engine is very important to me. Thanks in advance.
Lead Driver
Joined: Nov 2000
Posts: 6,625
Likes: 342
From: Albuquerque
Newbie Questions
If I were you I wouldn't take out the 300/6 unless I wa going to step up to a 400 or 429/460.
You should have 9" probably not posi. Not sure on the ratio.
There are some steel hoods available that might be better. I don't remember the company, maybe US body?
I don't think you will get into 15 sec quarter mile times with out at least a mildy built 400. What is the altitude above sea level where you live?
Have fun with it!
You should have 9" probably not posi. Not sure on the ratio.
There are some steel hoods available that might be better. I don't remember the company, maybe US body?
I don't think you will get into 15 sec quarter mile times with out at least a mildy built 400. What is the altitude above sea level where you live?
Have fun with it!
FTE Chapter Leader
Joined: Sep 2000
Posts: 3,862
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From: Beachville, Ontario
Newbie Questions
You can put in a 351W and change your gears to get in the 15's or better. My truck ran a 16.2 last summer with the stock 2.75 rear end, this year it will have a 3.50 LS rear before I try again. Your truck might have the 9", can be identified by removable carrier, otherwise it has small Dana, has removable cover plate on the rear of the axle instead.
To see what rear end your truck has now, either get the code off the door tag and post it here and we can tell you what it is, or jack up your rear end and spin a wheel and count the driveshaft revolutions.
To see what rear end your truck has now, either get the code off the door tag and post it here and we can tell you what it is, or jack up your rear end and spin a wheel and count the driveshaft revolutions.
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Senior User
Joined: Feb 2003
Posts: 193
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From: Carroll County, MD
Newbie Questions
I am 99.8% sure I have the 9" rear. I will find the code this weekend and post it. As far as the 351W goes: I know where I can get one and I know a guy that will build it for me. But, will I have to change my tranny? I was hoping to keep the same transmission. I have already replaced the clutch and I have the kit to make it a floor shifter.
FTE Chapter Leader
Joined: Sep 2000
Posts: 3,862
Likes: 5
From: Beachville, Ontario
Newbie Questions
Yeah, the same tranny will work ok, another guy on this board is using a 3 spd behind a 351W.
To change engines to a 302 or 351W you need a new rad, frame mounts, & wiring harness.
To change engines to a 302 or 351W you need a new rad, frame mounts, & wiring harness.
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