460 vs 390: Rebuild or Replace
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From: Gilbert, Arizona (Phoenix
460 vs 390: Rebuild or Replace
I have a 76 F150 SuperCab with a very tired 460 and automatic tranny in it. I have a good running 390 ready to drop in (along with a C6 that bolts up to the 390). The question I want to pose: What would you do? Rebuild the 460 or drop in the 390?
The primary use for the truck will be hauling and towing a car trailer. I have a 73 F100 with a 390 and have always been happy with the performance. The only problem has been stopping when I have a loaded trailer.
However, when I purchased the 76, even with the tired 460, it pulls better than the 390.
So, what's your opinion?
-Vinny
The primary use for the truck will be hauling and towing a car trailer. I have a 73 F100 with a 390 and have always been happy with the performance. The only problem has been stopping when I have a loaded trailer.
However, when I purchased the 76, even with the tired 460, it pulls better than the 390.
So, what's your opinion?
-Vinny
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Senior User
Joined: Jan 2003
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From: Gilbert, Arizona (Phoenix
460 vs 390: Rebuild or Replace
I really want the 460, but rebuilding will easily go over $1000. The 390 and tranny I have is ready to go (too bad the existing tranny won't bolt up to the 390). How much would you estimate conversion to cost?
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Joined: Feb 2003
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From: Kentucky
460 vs 390: Rebuild or Replace
Originally posted by e065206
I really want the 460, but rebuilding will easily go over $1000. The 390 and tranny I have is ready to go (too bad the existing tranny won't bolt up to the 390). How much would you estimate conversion to cost?
I really want the 460, but rebuilding will easily go over $1000. The 390 and tranny I have is ready to go (too bad the existing tranny won't bolt up to the 390). How much would you estimate conversion to cost?
Thread Starter
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Senior User
Joined: Jan 2003
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From: Gilbert, Arizona (Phoenix
460 vs 390: Rebuild or Replace
Greg - Right on both counts. I am planning on doing it myself with the assistance of a mechanic friend of mine. He has the contacts at a local machine shop. I've also got an opportunity to do an engine exchange - long block for long block - for $800. Comes with a 1 year warranty.
I have the electric brakes on both my trucks. They help a lot, but the F100 still is a lightweight. When I've got a full load on the trailer, I still need more stopping distance compared to when I'm using the F150.
I have the electric brakes on both my trucks. They help a lot, but the F100 still is a lightweight. When I've got a full load on the trailer, I still need more stopping distance compared to when I'm using the F150.
