1970 f100
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1970 f100
hi, i have a 1970 f100 4x4 with a 302 out of a 96 ford explorer and have a zf transmission behind it. i was wondering what the best way to add power to the motor. it is an all stock motor still fuel injected. thanks for any info
Posting Guru
Joined: Jun 2002
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From: redding U.S.A.
well, I guess we should take a step back.
What rear end gears do you have, and what are your RPMs at cruise on the highway?
How much are you looking to spend, and how much more power do you want?
What rear end gears do you have, and what are your RPMs at cruise on the highway?
How much are you looking to spend, and how much more power do you want?
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
The engine may be running under it's power band. The simplest thing to try would be to go to a 3.75 rear gear.
Don't forget to change your speedo gear to keep speedo on target when changing ratios. Usually a change like 3.5 to 3.75 will be one tooth difference.
John
Don't forget to change your speedo gear to keep speedo on target when changing ratios. Usually a change like 3.5 to 3.75 will be one tooth difference.
John
Posting Guru
Joined: Jun 2002
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From: redding U.S.A.
I would agree. Changing to a higher ratio rear end would help you out a lot.
Long tube headers would help with low end power, but in the north east where i'm from, they rust real quick. They are also loud in the cab and i hate them.
Long tube headers would help with low end power, but in the north east where i'm from, they rust real quick. They are also loud in the cab and i hate them.
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Fleet Owner
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From: Creedmoor, North Carolina
Check this site out * * Automotive Programs by Bowling & Grippo * *
Once you have your knowns you should be able to get your answer.
If your truck has a 9" rear it is just a matter of swapping the center section.
John
Once you have your knowns you should be able to get your answer.
If your truck has a 9" rear it is just a matter of swapping the center section.
John
Senior User
Joined: Jun 2004
Posts: 249
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From: Sacramento, CA.
Be careful with the fuel injection. Any time you start changing things with EFI you run the risk of having the ECM not functioning properly. Check with the 5.0 EFI boys on the engine forum, they may have some advise for you.
Good luck.
Good luck.
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