January 20, 2005460 swaps must be more common than I thought. I just got a Summit Racing "new" parts catalog and they are selling motor mounts for the swap.
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January 20, 2005when Steve and I first met he had just finished doing a 460 swap on an 82 orginally the car was a 4 banger its a track only car BUT the 460 only has intake and carb upgrades and it runs 12's the best Ive ever seen from the car was 12.22 at Atco in FEB but the annoucer kept calling it 'the little Mustang that could' it was a sweet day
anyway back to the point here he took the car out w/ the stock rear and flew apart the first time out he upgraded to the 9" and even the new onwer hasnt had any issues with the rear. besides beefing the sup up he upgraded the brakes of course like I said he started w/ a 4 cly car. a thing I would point out is if you plan on doing 3 grand clutch dumps you should consider tieing the frame. this is the second car he did the swap in and he ditched the first car because the way he was launching he twisted the frame badly - of course he was also pulling the right wheel off the ground about an inch while the left one wasnt coming up that high
either way I think the swap is a cool idea but why not just go with the engine you have instead of the added expense of buying a 460???
January 21, 2005I think Ive got him convinced to do the cleveland. We have a few 460s around, but they all need a rebuild, I got a cleveland when I was buying motors for my 86 Bronco. I was really wanting to put the cleveland in it, but it just proved too costly at the time. Ended up paying $65 for a 302 out of a mercury and putting it straight into the Bronco. The junk yard down the road has an 8.8 out of a fox body they said they would take $100 for.
January 21, 2005I'm not sure weight-wise if the 351C would be that much lighter then the 460. The Cleveland motors are built stout. But in a good way. If you like ultra-high RPM horsepower go with the Cleveland. They were designed for Trans-Am racing and scream [rev] like a scalded ape. Is the motor built/rebuilt? Parts aren't hard to find and they aren't expensive either. Parts are more expensive than 302W parts, but 302's are a dime-a-dozen and have a huge aftermarket. Just pick up a PAW catalog - tons of parts for Cleveland's.
$100 isn't bad for an 8.8 - but if you plan on putting down a significant amount of power it will need to be built, and bracing/trussing wouldn't hurt.
A FMX trans will do good. It's the 3-speed grandfather of the AOD/AODE/AODEW/4R70W line of transmissions, all great slushboxes.
You will need subframe connectors, HD rear control arms, and beefed-up torque boxes if you plan on putting down serious power...
January 21, 2005What keeps happening with the Harmonic Balancers? (you say 'breaking them off', which is not a very precise desciption). Are you installing them yourself? Do you have a bad keyway on your crank? Are they used HB's? Poorly rebuilt ones? Ford ones? Or a good aftermarket one like a Romac?
I have to play the voice of reason - yes, you can put a 351C OR a 460 in a late model Mustang. (You said you have a Cobra, which is just a Canadian Mustang GT AFAIK). But, is this out of frustration or is it a cost thing?
Fixing your 302 (buy a good balancer!), or simply swapping in another one (heck, put a late '80's EFI 5.0 in there - it makes a LOT more power than a '79 era 302) would be dirt cheap compared to swapping out the entire powertrain for a 351C or 460, both of which have been out of production for years and years.
The 351C was last used around '73? The 460 around '97? The 5.0 was discontinued (from the Explorer) also around '97-'98, but they were made in HUGE numbers compared to either of those other engines - it will always be easier to find parts for the 5.0.
January 21, 2005I dont know why they were breaking. The last time it broke the end of the crank off too. Ive just always wanted a cleveland in something and have one ready, but dont want to hack my 64 1/2 coupe or 65 Falcon enough to make it fit. Seeing as how I put 40" Boggers on my 79 Bronco it wouldnt be a good choice either... The cleveland isnt built much, but it isnt completely stock.
January 21, 2005Here's a very silly question. Do you know what the imbalance is supposed to be on your engine?
A '79 era 302 would have a 2M marked crank (just like a '6, a V-belt drive front accessory set, and a ****** 28 oz imbalance ******
(as opposed to 50 oz like a latemodel).
Of course, all it would take to convert over to 50 oz is to swap crank and flywheel/flexplate (and balancer). Is this the original engine in factory shape?
The balancer, crank, and flywheel (for a manual) or flexplate (for an auto) are the only parts necessary to swap, and you may have a weird miss-mash... that would certainly explain some issues...
January 22, 2005It is the original motor, but was rebuilt around 1988. I remember it was bored over for the rebuild, but cant remember how much. It didnt start breaking the crank/harmonic ballancer until 1990-1991.
December 15, 2005Due to trying to keep the Big Bronco running and Buying an 05 crewcab CTD Im just getting back to this project. I found out today the 4V 351C I have is either a Boss or Cobra Jet. It has 4 Bolt mains and I think it has a steel crank. Looks like Im getting a little lucky with it. Im hoping to be able to get 450-500Hp, but we will see. Doing some research on Cams now. Hope to send the block and heads to the machine shop soon.
December 16, 2005Cool!
A '79 Cobra with a 351C. Sounds like a fun car to me! You doing a 5 speed or auto. Let me take that back, do they even make a 5 speed that would bolt to a 351C? Probably would have to go 4 spd top loader...
Anyways, I always have liked those early Foxes...
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