what parts for forged bottom end? 2007 Mustang GT - Ford Mustang Forum
 
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post #1 of 14 (permalink) Old 10-12-2008 Thread Starter
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what parts for forged bottom end? 2007 Mustang GT

I'm thinking about adding forged parts to my stock 4.6 engine so that I wouldn't have to worry about it years from now, also I want to add more boost... around 10-12 psi. my goal is to get around to 480-500rwhp but have stronger internals that'll make my engine last longer.

What parts would I actually need to have a forged bottom end? The shop that installed my whipple said I'd should go with a new engine because it will end up costing just as much for parts and labor to reinforce the bottom end, they said 8k for a drop in motor and I'm not trying to do that now... but my friends are telling me it shouldn't cost no more that $1000 for forged parts a maybe a $1-2k for install....

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post #2 of 14 (permalink) Old 10-12-2008
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Sorry but that is a little bit of a lowball estimate. You will need
pistons 400
rings 80
pins160
rods w/ rod bolts 600
main bearings 100
rod bearings 100
engine gasket set 75
head gaskets 125
ARP head bolts (you cant re-use the head bolts) 300
crankshaft (optional) 800
freeze plugs 25
hot tank 60
aligng hone100
anti-freeze 35
oil 30
who will pull and replace the engine? 1500-2000
who will assemble the engine? 1000

Add that up and its more than 1000. i am just guestimating at prices but you get it.
You can buy a shortblock for 4300 plus head bolts and gaskets etc would be the best option.


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post #3 of 14 (permalink) Old 10-12-2008
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Yeah its all most as expensive to build your motor as it is to have your block built. Just because you are paying for labor to pull out all your internals and clean out your block.

with a brand new (depending on which you buy can cost you as little as 400$ i think thats how much my cast iron block cost thats just the price of the block not then entire bottom end.

With a good tune though and a good fuel system your whipple and block will be fine with that low of power your pushing out. any thing more then that. You should have a forged block..

But I have seen 480rwhp pop before and I have seen 520 rwhp last years. Its all in the tune

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post #4 of 14 (permalink) Old 10-12-2008
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Question Compression ration on SC

What volume piston cup is best for blowers in the 10 to 15 psi range? Probably will just end up buying a long block after all I've heard so far. Have also heard some say LTs will actually lower manifold pressure due to lack of overlap backpressure, any truth to that?

Last edited by Alfaduetto; 10-12-2008 at 04:38 PM. Reason: stupidity
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post #5 of 14 (permalink) Old 10-12-2008
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My parts were around $2500 and then another $2500 for installation. Agree that you should get a forged short block.

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post #6 of 14 (permalink) Old 10-13-2008
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Quote:
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My parts were around $2500 and then another $2500 for installation. Agree that you should get a forged short block.
That's 2500 for the motor and 2500 for the install?

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post #7 of 14 (permalink) Old 10-13-2008
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Quote:
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That's 2500 for the motor and 2500 for the install?
That also included replacing the heads and cams (which was another $3000 or so in parts).

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post #8 of 14 (permalink) Old 10-13-2008
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You did chuck a few buck at the car......:hihi:


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post #9 of 14 (permalink) Old 10-13-2008 Thread Starter
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Thanks, I guess will end up saving a while longer to get either a short block or a long block. if I'm gonna save for that I want something good like a aluminator or 302, I wish I had the money laying around for a 5.4 GT500 engine with s/c, but I'm sure it'll cost more than the $15k they want for it because I'll need parts that'll match up with it.
like tached_out said I am not really pushing out that much boost at the moment..
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You did chuck a few buck at the car......:hihi:
Pushing $35k so far.

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Pushing $35k so far.

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And not really proud of that fact either.

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im right there on the same price range as STL lol but my labor bill is only 35$ an hour so im sure it could of been much higher

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im right there on the same price range as STL lol but my labor bill is only 35$ an hour so im sure it could of been much higher
Good point... My labor was a lot lower too since most of my work was done by a family member.

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