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Old 08-14-2005, 08:56 AM
JF5speed JF5speed is offline
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4 bolt main 460 truck motor??

are 460 truck motors 4 bolt mains?????????????????
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Old 08-14-2005, 09:02 AM
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Thread moved to 460 forum.

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Old 08-14-2005, 09:23 AM
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Try and search for this topic as it was just dicussed not to long ago.
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Old 08-14-2005, 02:39 PM
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short answer---NO
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Old 08-14-2005, 06:41 PM
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Monsterbaby's right...short answer no. 4 bolts do exist but i have only seen 1. Sitting beside it on the shop floor was also a very old Ford factory dual four barel 460 intake. only seen one of those too.
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Old 08-14-2005, 07:30 PM
JF5speed JF5speed is offline
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I should have said 429
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Old 08-14-2005, 07:50 PM
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Quote:
Originally Posted by doccamel
Monsterbaby's right...short answer no. 4 bolts do exist but i have only seen 1. Sitting beside it on the shop floor was also a very old Ford factory dual four barel 460 intake. only seen one of those too.
HOWEVER, if you've got the money you can order a 4 bolt 429/460 block
from your Ford dealer through the motorsport catalog. Severe overkill for the street, though.
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Old 08-14-2005, 10:04 PM
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Quote:
Originally Posted by JF5speed
I should have said 429
short answer is still--NO. the only ones that had 4 bolt mains from the factory were HI-PRO engines I.E. Boss 9, SCJ, and some but not all CJ 429s no 460s had 4 bolts in them factory, and to the best of my knowledge (although with ford I won't say 100%) they were all DOVE-A castings.
However Kruse is correct you can buy the A460 block and it will have 4 bolt mains, and priority main oiling (same as Boss 9 block) they run around $2200 if I remember correctly, you can also buy aftermarket blocks from eliminator ranging from $1900 for the sportsman block to around $2800 for the Premier block.
Rumor has it Ford is supposed to come out with a sportsman block in the near future that will be in the $1600 range, and should be borable to 4.6" bore, but to date that is still rumor, and not fact yet.
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Old 08-15-2005, 08:48 PM
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You can do crossbolting if you want. Any competent machine shop can do it. It's a matter of boring 5 holes per side perfectly alinged with the main caps, then drilling and tapping smaller holes into the main caps themselves. use steel main caps for extra strength. It's not as strong as a racing 4-bolt main block, however it is stronger than stock.
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Old 08-15-2005, 09:39 PM
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I have never heard of anybody ever crossbolting a 385 engine. I know it used to be common on FE blocks.
I'm not sure if it's possible on a 385. I'll have to look at the bare block out in the shop and see.
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Old 08-16-2005, 12:39 AM
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it's not possible on a 385 series engine. On an FE the caps go down into the block on a 385 the bottom of the caps is almost perfectly level with the oil pan rails.
you can buy 4 bolt splayed caps from blue thunder I believe that work on most blocks, or use a DOVE-A block with thicker main webbing and convert those but start looking into the cost of converting them, and all the other stuff involved, and it's getting to the point that you are better off buying an aftermarket block with the thicker cyl walls allowing a much larger overbore.
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Old 08-16-2005, 09:03 AM
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Are you sure? I thought I read that early truck blocks mimiced the 429 Boss/SCJ with 4 bolt mains. They later reduced them to 2 bolts. These truck blocks can be wonderful for super street/race setup. What is the casting code on the block?
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Old 08-17-2005, 09:44 AM
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I had asked the question about the 4 bolt blocks a week or so ago. I wanted to find a 460 4 bolt block. I have a 429 CJ with the thick web 4 bolt mains that is pretty much complete and I am going to be putting it up for sale after I get it cleaned and checked. I was wanting to do a 460 build with a 4 bolt main if they were available.

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Old 08-17-2005, 12:52 PM
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Ragtop, I'm confused about what you're after. Put a 460 crank in your 4-bolt CJ block and you've got a 4-bolt 460 (after changing pistons of course).

I've also read that there was a 4-bolt 460 truck motor (D8 casting I think) but, after 3 years of watching on Ebay, I've never seen one go by. A bunch of DOVE-A CJ blocks and a ton of 2-bolt 460 blocks, but no D8s. If they exist, where are they?
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Old 08-17-2005, 01:14 PM
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I didn't want to separate a good 429 CJ since it has the heads, intake and everything I wanted to part with it as a complete motor. Back to the 460, I was wanting a 4 bolt because the long term plan is to run this as a blown injected alcohol motor and it needs the bottom end strength. An aluminum block would be great but I can't budget for that now.

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Old 08-17-2005, 01:14 PM
 
 
 
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