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-   -   Going into my 4.6 soon (http://forums.mustangworks.com/showthread.php?t=45443)

Duane'97gt2v 02-23-2005 10:29 AM
Going into my 4.6 soon
 
I plan on getting into my 4.6 pretty soon, runs perfect though. No oil is leaking or burning. I'm going to add "PI" heads and intake, upper plenium, cold air, throttle body and headers. Should I go ahead and pull the whole block out and have it cleaned and replace the stock componets w/new? I feel I should add forged pistons also 'cause have future plans (1 yr. or so)of adding roots style supercharger, or should I just leave the bottom-end alone despite having 101,000 miles of no problems on it? Which headers should I go with '96-'98 or '99 up? I'm pretty sure '99 and up due to "PI" heads, but not certain, and what throttle body size, want to run BBK but not sure on size. I found a forged pistons rebuild kit in Summit for a little under $800.00, and pulling the block and replacing the bottom-end could seriously be felt on my budget and extended garage time( even with help of friends) any replys will be appreciated. Oh yeah, has anyone else ever broke into one of these mod motors? I hear it's rather time consuming and a head-ache.

Orange97GTVert 02-23-2005 07:04 PM
Re: Going into my 4.6 soon
 
I think if I was going to start moddin' a 4.6 with 101K miles I would go ahead and go through the block while I was at it. It may run perfect now, but go adding horsepower and possibly a heavy foot and who knows how long it will be before you have to go back into it. Go ahead and build the bottom end now so it can handle the mods you have planned for it.

302mazda 02-24-2005 01:10 AM
Re: Going into my 4.6 soon
 
Quote:
Originally Posted by Orange97GTVert
I think if I was going to start moddin' a 4.6 with 101K miles I would go ahead and go through the block while I was at it. It may run perfect now, but go adding horsepower and possibly a heavy foot and who knows how long it will be before you have to go back into it. Go ahead and build the bottom end now so it can handle the mods you have planned for it.
he has already add the heavy foot part lol :D :D :D

Red Mustang Gt 46 02-27-2005 07:37 AM
Re: Going into my 4.6 soon
 
With 110 on the odometer, it would be wise to rebuild the entire block. In my experience (w/ fleet Crown Vics) 100,000 + miles gets close to the compression ring failure area. It is not to say that you would experience failure, you just run the risk...

surfbeast 02-27-2005 08:28 PM
Re: Going into my 4.6 soon
 
Pull and replace or just buy a good used low milage 4.6. In good shape it can handle boost and you may save money on all the labor and trouble involved in rebuilding and old NPI block.

Duane'97gt2v 02-28-2005 08:25 AM
Re: Going into my 4.6 soon
 
Thanks guys, I appreciate the replys and advice!!!


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