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Advice on 460 swap into a 91'

Old 05-12-2005, 03:15 AM
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RAGNAROK
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Default Advice on 460 swap into a 91'

I have come across a free 460 w/ c6 and I am entertaining the idea of eventually dropping in my 91 Notch. I rode in a 89 hatch with a 460 in it a few years ago and I believe thats as close as I have came to crapping my pants since I was 2 years old. Anyway , I could be dropping 450 hp / 500lbs, without breaking a sweat if i built that 460 even mildly and way cheaper than i can do it with my 302. My question is , exactly how hard is it do perform this swap assuming I have bought a kit with the motor mounts , headers and oil pan? I have heard there are going to be issues with firewall clearance as far as the bellhousing is concerned, also clearance issues with the master cylinder, and I guess I will be needing to do suspension work as well. Also what about a driveshaft? Custom i am guessing. i guess my overall question can be summed up as How hard is it going to be assuming i have all the swap parts together.
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Old 05-12-2005, 04:36 PM
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mkspeed26
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Default RE: Advice on 460 swap into a 91'

450 hp? try more like 500 easily!!!!!! i was gonna do the swap, but found out i was very short on money. i bet you could find a site on the swap. i have heard about master cylinder clearance issues and know for a fact that you will need new oil pan/headers/hood/mounts. you might need a new crossmember for the C6 as well, but im not sure.
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Old 05-12-2005, 04:40 PM
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Default RE: Advice on 460 swap into a 91'

a mild 408 combo can top 500 hp ..with less weight too..and no bucthery
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Old 05-13-2005, 01:56 AM
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Default RE: Advice on 460 swap into a 91'

Well I had thought about doing a 351w combo of some sort, but I got this setup free and it actually only has about 20k miles on it. I just figured it would be a pretty fun swap condisering how few big block Foxbodies I've seen before, and i live in hardcore Mustang country. There are 3 Performance shops within 15 miles of me dedicated to Mustangs, and there were 4 until recently. In the last 4-5 years I've only seen 3 460 Mustangs and they were all badass. I'de just like the cheap (almost free) power, and the ability to reply " Oh , it's just a 460" whenever someone asks what got in it, and watch their confused expressions.
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Old 05-13-2005, 09:50 AM
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Default RE: Advice on 460 swap into a 91'

Which is lighter the 460 or the OHC 4.6?
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Old 05-13-2005, 04:44 PM
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mkspeed26
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Default RE: Advice on 460 swap into a 91'

460s are f*ckin monstrous. a kid is rebuildin one in my auto calls. i feel bad for him cause it takes him FOREVER to do anything to it.
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Old 05-13-2005, 09:09 PM
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Default RE: Advice on 460 swap into a 91'


ORIGINAL: FoxGT

Which is lighter the 460 or the OHC 4.6?
Remember "460" is cubic inches and "4.6" is liters. A 460ci motor is approx same as 7.5 liters!

So yup, a 7.5 weighs a ton more than a 4.6
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Old 05-13-2005, 09:12 PM
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Default RE: Advice on 460 swap into a 91'

the 460 heads are smog heads,,,unless you got cobra jet heads..ehich i dont think you got ,,8.5to1 compression ...hi compression makes more tq.
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Old 05-14-2005, 04:57 AM
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Default RE: Advice on 460 swap into a 91'

No they aren't CJ heads unfortunately. But they are the D0VE castings. If i end up going with the 460 I'll get them ported. I guess the only thing I am worried about right now is the suspension. Because yes, they are scary big and they weight about as much as a geo metro lol. Hood clearance isn't an issue and neither are the headers and pan. Another question I have ( which may sound stupid btw) is wether the motor mounts are going to bolt right up to the stock location or if I have to move them and re-weld them.
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Old 05-14-2005, 11:12 AM
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mkspeed26
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Default RE: Advice on 460 swap into a 91'

ur stockers wont bolt the 461 in (dont know for a fact, but its almost not possible) if u buy swap mounts they should bolt right in
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