351w swap into 3.8 car - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 05-06-2007, 08:58 PM   #1
Registered User
Newbie
 
Join Date: May 2007
Region: North Carolina
Posts: 9
Send a message via AIM to 84vert Send a message via Yahoo to 84vert
351w swap into 3.8 car

hey guys..heres one for you. we just purchased a 1984 mustang lx convertible with the 3.8 v6 and auto trans for $450.00. it runs and we drove it home! I want to install a well built 351w and at trans in it. whats the pros and cons of this since the 351w will be carb and the v6 is TBI?? I know the rear will be changed to a 8.8, maybe a custom built 9". does these TBI cars have the fuel pump in the tank or inline? what about wireing the dist to work? we may purchase a aftermarket c-4 or what one from another vehicle will work? we've owned a 87gt,90lx,98gt and a 80 which i put a 460/c6 in. just looking for advise/help since this one has a computer in it and the 80 didn't.
84vert is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-08-2007, 06:21 PM   #2
Registered Member
Regular
 
bullitt482's Avatar
 
Join Date: Apr 2006
Region: Mississippi
Posts: 1,106
Re: 351w swap into 3.8 car

If you have done a 460 in a Fox body, you shouldn't have ANY of these questions to worry about. Just a cake walk.



I'd just go pick up a wiring harness from a donor(yes I said it svtlx) and use it for gauges, starter, etc. I don't know much about the fuel system on a stock 84 6 banger. Maybe someone else will chime in.
__________________
01 Bullitt
bullitt482 is offline   Reply With Quote
Old 05-08-2007, 08:40 PM   #3
Registered User
Newbie
 
Join Date: May 2007
Region: North Carolina
Posts: 9
Send a message via AIM to 84vert Send a message via Yahoo to 84vert
Re: 351w swap into 3.8 car

Thanks bullitt482...the 460/at was a breeze,slight ding in the trans tunnel to clear a spot on the c6 trans. I used the dist and box from the the donor car it came from,which was a 76 lincoln cont. also i spiced the wires for the gauges,etc and everything worked fine. I assume this one has a computer of some sorts and why i was wondering about the dist and box i should use and if i have to or can do away with the computer and some or all wires from it. I'm not concerned about the fuel pump being inline or in tank as i know the aftermarket has a pickup without the pump. Thanks again Bullitt482 and any other thoughts/ideals from you or anyone else send them my way.
84vert is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-09-2007, 06:29 PM   #4
Registered Member
Regular
 
bullitt482's Avatar
 
Join Date: Apr 2006
Region: Mississippi
Posts: 1,106
Re: 351w swap into 3.8 car

Anytime. Oh, and how hard was the actual install of the 460 block and trans. What kind of mounts did you have to make/buy? We have a 385 series block out of a lincoln cont that was never install but it needs serious cleaning first. We will be looking at a donor body to put it in sometime in the next year or two.
__________________
01 Bullitt
bullitt482 is offline   Reply With Quote
Old 05-10-2007, 07:25 AM   #5
Titus Wadicus
Regular
 
svtlx's Avatar
 
Join Date: Jan 2007
Region: Ohio
Posts: 2,103
Send a message via Yahoo to svtlx
Re: 351w swap into 3.8 car

Quote:
Originally Posted by 84vert View Post
Thanks bullitt482...the 460/at was a breeze,slight ding in the trans tunnel to clear a spot on the c6 trans. I used the dist and box from the the donor car it came from,which was a 76 lincoln cont. also i spiced the wires for the gauges,etc and everything worked fine. I assume this one has a computer of some sorts and why i was wondering about the dist and box i should use and if i have to or can do away with the computer and some or all wires from it. I'm not concerned about the fuel pump being inline or in tank as i know the aftermarket has a pickup without the pump. Thanks again Bullitt482 and any other thoughts/ideals from you or anyone else send them my way.
haha bullit...u knew i would find this post!!!!..as for u 84 vert. if u can get wire diagrams from donor car and the recieving vehicle, i would "just me talk'n here" splice the new wiring directly into the bottom of the dist. block, that way all functions shut on/off with relays as intended from the factory. that's wut i did on my last few conversions....less chance of something catching fire if u wire it to factory spec and location... don't by-pass the fuses and relays if u don't have too...it takes a lil longer to do then engineering your own harness, but it works out alot better in the end and alot safer...at least for efi cars anyway....or i'm sure bullit can hook u up with the appropriate painless wiring link for your application..lol...all seriousness, that really might be a route for you to consider...i dunno...i'm far from the brightest guy on this forum
svtlx is offline   Reply With Quote
Old 05-10-2007, 12:57 PM   #6
Registered Member
Regular
 
Join Date: Feb 2007
Region: Mississippi
Posts: 87
Send a message via AIM to A5295
Re: 351w swap into 3.8 car

both bullitt and svt make good points...

Im gonna post something else for you to consider as well - i know the car was TBI, so you may have too much fuel pressure for the carb setup. you can go to your neighborhood oreillys/autozone/kragen and pick up a low pressure regulator pretty cheap. Most carbs need less than 6 psi to run efficiently. Too much pressure, and you run the risk of running really rich, or ruining the seals in your carb. Your TBI pump probably runs 9-15 psi, so you only need to bring it down a bit.

Im by no means a carb guru, but ive owned a couple in my time... had to change pumps on my old 240z, cuz it was putting out too much pressure, and the car ran really really rich. new pump helped, but the dual sidedraft SU's still needed some adjustment to run right. God i miss that car!

anyway, now that ive rambled for a bit, back to topic. Check your fuel pressure, and if its over the recommended press for the carb/engine setup, just get a regulator and turn it down a bit.
A5295 is offline   Reply With Quote
Old 05-13-2007, 08:51 AM   #7
Registered User
Newbie
 
Join Date: May 2007
Region: North Carolina
Posts: 9
Send a message via AIM to 84vert Send a message via Yahoo to 84vert
Re: 351w swap into 3.8 car

it was easy. the only thing was the trans hit the tunnel. a hammer and a small dent here and there was all that was needed. i used every thing from the linc,brackets etc. I got the oilpan,pickup,pump,dipstick tube,motor mounts and long tube hedders from Holcomb motorsports. the 460/c6 was rebuilt back to stock with the exception of a small cam and shiftkit in trans.it fit under the stock hood useing the factory intake,carb,aircleaner. when i intalled a aftermarket intake,carb,air cleaner had to use a cowl hood. i did use the frt springs from a v8 car and 8.8 rear with stock 3.08 gears. the 460 fits with ease. plenty of room!! i used a motorsports rad and two electic fans. its temp stayed at normal level,in traffic, with the factory gauge. never any overheating. i ran 2 1/2 inch pipes with mini-turbo mufflers and no tail pipes,just turn downs.
84vert is offline   Reply With Quote
Old 05-13-2007, 09:01 AM   #8
Registered User
Newbie
 
Join Date: May 2007
Region: North Carolina
Posts: 9
Send a message via AIM to 84vert Send a message via Yahoo to 84vert
Re: 351w swap into 3.8 car

Thanks A5295, I'm useing the aftermarked pickup assy with no pump attached. I'll be using a electic pump. the 351w has 10.5 pistons,victor jr. heads,comp xtreme cam-294/306-544/558,victor jr intake,750 dp. balanced/blueprinted. maybe a "little" to much motor,lol. Thanks again A5295
84vert is offline   Reply With Quote
Old 05-13-2007, 09:05 AM   #9
Registered User
Newbie
 
Join Date: May 2007
Region: North Carolina
Posts: 9
Send a message via AIM to 84vert Send a message via Yahoo to 84vert
Re: 351w swap into 3.8 car

Thanks SVTLX. the engine is from my old 83 f150 4X4 which i installed a new crate 351w in. probe inds. claims these are some of the best yr engines to use for HP. so i don't have a donor car,lol.
84vert is offline   Reply With Quote
Old 05-13-2007, 11:42 AM   #10
Titus Wadicus
Regular
 
svtlx's Avatar
 
Join Date: Jan 2007
Region: Ohio
Posts: 2,103
Send a message via Yahoo to svtlx
Re: 351w swap into 3.8 car

Quote:
Originally Posted by 84vert View Post
Thanks SVTLX. the engine is from my old 83 f150 4X4 which i installed a new crate 351w in. probe inds. claims these are some of the best yr engines to use for HP. so i don't have a donor car,lol.
LOL, my 302 is still in pieces. i'm hope'n my dad gets a new car before i finish the rebuild, he is gonna give me his '96 e-150 w/351 efi. definatley my prefered power plant. and then drop my 9lbs. blower on it..woohoo!!! goodluck with the swap..there r alot of swap parts available out there,i just don't know wut most of them are, i'm so use to being broke and modifying stock parts and electronics to make them work, i don't have a clue of wut good aftermarket stuff is available. personaly, i would do an efi set-up. in my opinion that stuff is more available at salvage yard then some of the more acient/obselete stuff. professional products makes a great inexpensive efi 351intake. less than 400 dollars, mustang specific type install. better flo bench #'s than gt40 and cobra intake. very close to trick-flow performance, with half the price. just my opinion though. u probably already know, but it doesn't have to be late model roller to be fuel injected.
svtlx is offline   Reply With Quote
Old 05-13-2007, 03:41 PM   #11
Registered Member
Regular
 
bullitt482's Avatar
 
Join Date: Apr 2006
Region: Mississippi
Posts: 1,106
Re: 351w swap into 3.8 car

Quote:
Originally Posted by svtlx View Post
LOL, my 302 is still in pieces. i'm hope'n my dad gets a new car before i finish the rebuild, he is gonna give me his '96 e-150 w/351 efi. definatley my prefered power plant. and then drop my 9lbs. blower on it..woohoo!!! goodluck with the swap...
You definately want a newer 351W like yours. That way you wouldn't have to convert it to a roller cam like in the HO Mustangs.

And if it's a roller 351W, you can use the computer, harness, EFI setup, etc. that is on a 302. Same firing order.

1-3-7-2-6-5-4-8
__________________
01 Bullitt
bullitt482 is offline   Reply With Quote
Old 05-13-2007, 04:54 PM   #12
Titus Wadicus
Regular
 
svtlx's Avatar
 
Join Date: Jan 2007
Region: Ohio
Posts: 2,103
Send a message via Yahoo to svtlx
Re: 351w swap into 3.8 car

Quote:
Originally Posted by bullitt482 View Post
You definately want a newer 351W like yours. That way you wouldn't have to convert it to a roller cam like in the HO Mustangs.

And if it's a roller 351W, you can use the computer, harness, EFI setup, etc. that is on a 302. Same firing order.

1-3-7-2-6-5-4-8
really?...i thought i had to use the 351 computer & dist....but i could use my e-cam, and other crap....wishful think'n, i'm not hold'n my breath, those 351's don't die easy. i'm hope'n to get it before i h have to buy a new crank and rods for it....but my dad will drive it till the rods punch through the block.
svtlx is offline   Reply With Quote
Old 05-13-2007, 08:36 PM   #13
Registered User
Newbie
 
Join Date: May 2007
Region: North Carolina
Posts: 9
Send a message via AIM to 84vert Send a message via Yahoo to 84vert
Re: 351w swap into 3.8 car

ok guys..we're missing the point here. my main corcern now is wiring the dist to work. can i remove the brains (computer) if it has one or can i bypass it someway without buying a a harness? heck i can buy a race type harness for the whole car if i need too. and no i'll stay with the carb setup, remember it was TBI not FI.
84vert is offline   Reply With Quote
Old 05-14-2007, 07:25 AM   #14
Titus Wadicus
Regular
 
svtlx's Avatar
 
Join Date: Jan 2007
Region: Ohio
Posts: 2,103
Send a message via Yahoo to svtlx
Re: 351w swap into 3.8 car

Quote:
Originally Posted by 84vert View Post
ok guys..we're missing the point here. my main corcern now is wiring the dist to work. can i remove the brains (computer) if it has one or can i bypass it someway without buying a a harness? heck i can buy a race type harness for the whole car if i need too. and no i'll stay with the carb setup, remember it was TBI not FI.
i'm sorry, i get carried away sometimes as m.e.'s unofficial e.f.i. advocate. u don't have to remove the computer. i would remove it's harness (for a cleaner look) and leave the ecm in place. depending on the ecm's location. it's totaly up to u to remove it or leave it. when we went from an 86 to a 95 cab on my buddies tow truck we left the ecm in place and removed the harness. cleaned up the engine bay, without leave'n a big rectangular hole in the fire wall. he filled ecm harness "connector" with black silicone so the pins wouldn't look rusty...just looks like a black rectangle in the firewall. we wired the stuff from the 86 chassis to the 95 cab. we had to change all the sensors on the motor to 93-95 sensors so that the 95 cab gauges would read the sensors. if u r goin carb., y buy a harness. seems like u could buy a couple rolls of wire, 1-2 rolls of electric tape roll, 5-6ft. of your favorite color of wire loom, soldering iron & solder (optional), & a test light. u should have that thing wired up in 3hrs. or less. unless race harnesses are cheaper than the items i listed, if so, then just get the race harness. personaly, i feel that wiring your own electronics gives you that intimate knowledge of your car and how it operates "electronicaly speaking". so in the future if u have any problems you have a pretty good idea where to look. in my opinion, a plug and play harness doesn't teach u anything about your cars electrical...not to mention, doing your own wiring gives you an opportunity to extend or shorten wires to give u a clean, custom look. that's just my oppinion cause i like wiring and efi in general. however, i do understand that alot of people here don't feel that spending a whole saturday wiring their car is a relaxing experience (like i do..lol). and a race harness may be your in your best interest.
svtlx is offline   Reply With Quote
Old 07-06-2007, 10:32 PM   #15
Registered User
Newbie
 
Join Date: May 2007
Region: North Carolina
Posts: 9
Send a message via AIM to 84vert Send a message via Yahoo to 84vert
Re: 351w swap into 3.8 car

ok..heres a update...351w/c4 is in the car!! used a proform HEI type dist for it.easy one wire hook up for the fire. engine pulled 575hp on the engine dyno...DAMN!! v8 springs in front,8.8 rear with auburn locker,3:73's,33 spine axles, all gauges work correct. putting exhaust on it 7-7-07 and it'll be street ready! thanks for all the infor. now looking for another project....anyone with a 79-93 body for sale??
84vert is offline   Reply With Quote
Old 07-08-2007, 04:39 PM   #16
Registered Member
Regular
 
bullitt482's Avatar
 
Join Date: Apr 2006
Region: Mississippi
Posts: 1,106
Re: 351w swap into 3.8 car

Dammit man, what was done to the 351? Obviously H/C/I and a bore/stroke combo...
__________________
01 Bullitt
bullitt482 is offline   Reply With Quote
Old 07-14-2007, 09:07 PM   #17
Registered User
Newbie
 
Join Date: May 2007
Region: North Carolina
Posts: 9
Send a message via AIM to 84vert Send a message via Yahoo to 84vert
Re: 351w swap into 3.8 car

lol...no its just 30 over. listed the items i used in a earlier post. did swap out the 750 holley for a 850. balanced,blueprinted. only used name brand parts since the wife gave me the checkbook,lol. i did use longtube headers on it, 2 1/2 inch pipes with 2-chamber flows and turndowns. and it has a 250 hp nos kit installed just in case! now looking for a 79-93 mustang body for our next project!! anyone in North Carolina have one for sale??
84vert is offline   Reply With Quote
Old 07-22-2007, 09:28 PM   #18
Registered Member
Regular
 
silverstangboy's Avatar
 
Join Date: Jan 2005
Region: Alabama
Posts: 583
Re: 351w swap into 3.8 car

whoa!, 2.5" exhaust on a 351 making 575 fwhp? thats a huge restriction...
__________________


93 mustang notch
~450hp 331 stroker - Sold
silverstangboy is offline   Reply With Quote
Old 07-23-2007, 06:33 AM   #19
Legacy Member
Legacy
 
bbunt302's Avatar
 
Join Date: Jun 2004
Region: Texas
Posts: 2,459
Send a message via AIM to bbunt302
Re: 351w swap into 3.8 car

Uh... what's that smell?
__________________

Scary stuff.
bbunt302 is offline   Reply With Quote
Old 07-23-2007, 05:20 PM   #20
Registered Member
Regular
 
bullitt482's Avatar
 
Join Date: Apr 2006
Region: Mississippi
Posts: 1,106
Re: 351w swap into 3.8 car

I think I smell it too......... Reminds me of a barnyard.
__________________
01 Bullitt
bullitt482 is offline   Reply With Quote
Old 07-25-2007, 07:03 AM   #21
Titus Wadicus
Regular
 
svtlx's Avatar
 
Join Date: Jan 2007
Region: Ohio
Posts: 2,103
Send a message via Yahoo to svtlx
Re: 351w swap into 3.8 car

Quote:
Originally Posted by bullitt482 View Post
I think I smell it too......... Reminds me of a barnyard.
huh? wut smell?.....oh, i'm clean'n the stables...these damn bulls...lmfao
svtlx is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1979-1995 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
351w swap ? juced302 1979-1995 Mustang GT 2 02-26-2010 09:19 PM
72-351W to 98-4.6 swap 06TC88 1996-2004 Mustang GT 1 04-27-2009 04:54 PM
94 V6 Gear Swap?? (5spd Car) jimmyjams Pre-2005 V6 Mustang 1 04-23-2008 11:34 PM
351w swap fuel delivery? sneakyD 1979-1995 Mustang GT 0 01-16-2008 03:56 PM
4.6 2000GT swap to 351W (5.8) sgtcrouse 1979-1995 Mustang GT 11 07-27-2004 02:30 PM

» Like Us On Facebook



12:50 AM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.