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Discussion Starter · #1 ·
Hope everyone had a great Christmas!!! I am just about ready to drop a 460 in my '85. My question is about getting things buttoned up. Which radiator to use, a heavy duty 351W radiator or a 460 F-250 radiator? (I have a C6 tranny)

Also I am debating on what engine mounts to use. I am getting perches from a F-250 so should I go with stock 460 mounts or use 390 mounts. I am worried that using the stock 460 mounts with the insulators the motor will set up too high in the perches and have problems clearancing the firewall. The 390 mounts are much thinner and therefore the motor wouldn't sit so high in the perches. I've thought about going ahead and lifting the body 2" just to give the 460 a little more wiggle room.

Also, I am going to replace the trans. mount. Any suggestions? Poly or stock?

Thanks in advance for the help :thumbup
 

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well guy,

I am just finishing up my 460 efi swap into my 1980 bronco and I can tell you best mounts to use are the l&l mounts... they will let your 460 sit at the height on your current engine so your tranny will line up correctly as well as position it the correct distance front to rear... I found that the f250 mounts put the engine to far either back or forward in the engine compartment, I can't remember which... good luck in your swap. :drinkbud
 

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haaarrrrr haaaarrrr
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i'd have to agree with timmy on this one. I was goin to use the 390 mounts and even went out n bought em, but decided on the l&l mounts just cause it was easier. yeah the other ones wer about $90bucks cheaper but droppin the motor in without fittin, cuttin, fittin some more, pullin the motor back out, measurin the mounts, drillin holes, tryin again, blah blah blah, was definitely worth the money! save your self the trouble. As for the radiator i just used my stock 351M rad. I just got it in the summer n didn't wanna just trash it. It's a 4core so i don't think i'll have any problems, used the stock 351M hoses too. hope that helps. :thumbup
 

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Discussion Starter · #4 ·
I would use the L&L stuff if I still had the 351W perches. I installed a set of Fabtech motor mounts on my 351W which required removing the factory perches and I threw the factory perches out :banghead
 

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haaarrrrr haaaarrrr
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so what was the difference between the perches? in that case i'd just use the stock 460 mounts n drill some holes. Sucks though. good luck
btw, u got the right c6 right? sorry for the dump question, just tryin to help :thumbup
 

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Discussion Starter · #6 ·
drexelsteve said:
so what was the difference between the perches? in that case i'd just use the stock 460 mounts n drill some holes. Sucks though. good luck
btw, u got the right c6 right? sorry for the dump question, just tryin to help :thumbup

There is a difference from the 351W perches and the 460 perches. The 460 perch has 2 slots in it where the 351W only has one. I do not know if there are any other differences. Never had both side by side.

Yes, I do have a C6 with a 460 pattern bell-housing.

The more I think about it I will probably just lift the body a couple inches to have plenty of wiggle room and use the factory stuff.
 

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Sway Is My Fan Club.
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The L&L mounts are for the factory Bronco perches. If you've got 460 perches from a F250, I would go with the F250 460 motor mounts.

I bought the 390FE mounts then decided not to use them, because dad couldn't get them to line up right. These are from a '76 F250, 390FE. Brand new...if you need some. ;)

 
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