3.8 to 4.2 question

97v6stang · February 5th, 2008, 12:04 AM

alrite so heres wut im wanting to do ....i have a 97 v6 mustang it a 3.8 single port...and im wanting to put the 4.2 bottom end off of a 97 and up f 150.....and then im wanting to put the 99-04 3.8 split port heads and upper/lower intake on top of that...just to throw ppl for a loop they will never exspect the 4.2 bottom end ......how hard would this be to do and how much of a gain would i get....i kno the 4.2 block bolts up but other then that im not 100% sure

whitemustang02 · February 5th, 2008, 12:07 AM

that is actuealy fairly comen to go to a 4.2 or 4.3 stroker. so u arnt gana be throwing all that may people for a lope.
also if u r doing thisswap for the love of god get some beter intke the stock one sucks.
as well as some head and valve train work.

97fordsixer · February 5th, 2008, 12:08 AM

I wanted to do that too but too much time and money. instead I am just modding my current motor. someone else Help!!

whitemustang02 · February 5th, 2008, 12:09 AM

Originally Posted by 97fordsixer

I wanted to do that too but too much time and money. instead I am just modding my current motor. someone else Help!!

wanted to do what

Hourofpain · February 5th, 2008, 12:09 AM

either super six's box intake or a windstar swap

whitemustang02 · February 5th, 2008, 12:11 AM

Originally Posted by Hourofpain

either super six's box intake or a windstar swap

the box upper is best for f/i apps and the 96-98 windstar isen't a bad swap but there r better options out there.
but it definetaly has it's strong points.

Onemanzu · February 5th, 2008, 12:12 AM

I might suggest just pulling a hole motor out of a 97 and up F150 or something and re working that... and if you could just the core out of a 99 and up mustang that way you can take your time transfer what you need to and that sort of thing... after that drop the cleaned block and parts into your car...

also you might see 5-15 horse power gain

itschristorres8 · February 5th, 2008, 12:27 AM

you wont get much extra power from just have the 4.2L bottom end
nothing worth doing at least if your leaving the bottom end stock

99v6stang · February 5th, 2008, 01:09 PM

get the 4.2, and while you are trasfering parts over get some better heads, cam, and intakes and you will have one bad ass machine

itschristorres8 · February 5th, 2008, 01:22 PM

the 4.2L short block will just have a longer stroke with a little more torque maybe some hp

assuming he's pulling it out of a 4.2L F150 thats a stock bottom end

February 5th, 2008, 12:04 AM	#1
97v6stang Look Ma! My First Post! 97 v6 mustang rele slow Join Date: Feb 2008 Location: kentucky Posts: 1 iTrader: 0 reviews	3.8 to 4.2 question alrite so heres wut im wanting to do ....i have a 97 v6 mustang it a 3.8 single port...and im wanting to put the 4.2 bottom end off of a 97 and up f 150.....and then im wanting to put the 99-04 3.8 split port heads and upper/lower intake on top of that...just to throw ppl for a loop they will never exspect the 4.2 bottom end ......how hard would this be to do and how much of a gain would i get....i kno the 4.2 block bolts up but other then that im not 100% sure

February 5th, 2008, 12:07 AM	#2
whitemustang02 MM's official Chevy guy 2002 Mustang V6 Join Date: Sep 2007 Location: Rochester, NY Posts: 2,024 iTrader: 0 reviews	that is actuealy fairly comen to go to a 4.2 or 4.3 stroker. so u arnt gana be throwing all that may people for a lope. also if u r doing thisswap for the love of god get some beter intke the stock one sucks. as well as some head and valve train work. __________________ "Speak softly and carry a big stick" - Theodore Roosevelt "Any idiot can make a V8 fast, it takes a real idiot to make a fast V6". '02 Mustang N/A 4.3 stroker away for winter '72 Chevelle project car 454 coming '93 Bronco EFI 351W DD

February 5th, 2008, 12:09 AM	#5
Hourofpain Hardcore Enthusiast 2005 Torrid Red GTO m6 Join Date: Mar 2007 Location: Virginia Beach Posts: 1,524 iTrader: 0 reviews	either super six's box intake or a windstar swap __________________ 1996 Cobra To be sold... 2005 M6 Twin Turbo GTO Torrid Red Fully Forged LS2 Block Built to handle 1000RWHP. Fully ported Dart Heads. Edelbrock Jr Intake. Custom cut upper intake plenum. APS twin Turbo System with APS twin Fuel pumps.

February 5th, 2008, 12:12 AM	#7
Onemanzu ¡ʇsnq ɹo uʍop ǝpısdn Join Date: Oct 2006 Location: Looking for free hand jobs in poland springs nebraska... silly gooses Posts: 12,551 Blog Entries: 1 iTrader: 0 reviews	I might suggest just pulling a hole motor out of a 97 and up F150 or something and re working that... and if you could just the core out of a 99 and up mustang that way you can take your time transfer what you need to and that sort of thing... after that drop the cleaned block and parts into your car... also you might see 5-15 horse power gain __________________ My Foz

February 5th, 2008, 12:27 AM	#8
itschristorres8 Banned 00 V6 & 09 GT 13.37@104.4mph--BONE stock GT Join Date: Aug 2006 Location: south florida Posts: 15,806 iTrader: 2 reviews	you wont get much extra power from just have the 4.2L bottom end nothing worth doing at least if your leaving the bottom end stock __________________ [SIGPIC][/SIGPIC] Acmillr loves me

February 5th, 2008, 12:08 AM	#3
97fordsixer Regular 97 single port w/bolt ons n/a Join Date: Sep 2007 Location: iowa Posts: 218 iTrader: 0 reviews	I wanted to do that too but too much time and money. instead I am just modding my current motor. someone else Help!!

February 5th, 2008, 01:09 PM	#9
99v6stang Enthusiast Join Date: Dec 2006 Posts: 760 iTrader: 0 reviews	get the 4.2, and while you are trasfering parts over get some better heads, cam, and intakes and you will have one bad ass machine __________________ My car ---- (m112 in progress)

February 5th, 2008, 01:22 PM	#10
itschristorres8 Banned 00 V6 & 09 GT 13.37@104.4mph--BONE stock GT Join Date: Aug 2006 Location: south florida Posts: 15,806 iTrader: 2 reviews	the 4.2L short block will just have a longer stroke with a little more torque maybe some hp assuming he's pulling it out of a 4.2L F150 thats a stock bottom end __________________ [SIGPIC][/SIGPIC] Acmillr loves me

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