What Is Needed To Swap Early 302 To Fox 5.0???

oz

Founding Member
Jun 29, 2000
1,066
1
38
Plymouth, MI
Visit site
Greetings,
Can someone please list all the things I'd need to do if I want to put a late 80's/early 90's 5.0 in a '73 in place of the stock 302?
The original '73 302 is junk and instead of getting another early 302 long block, how hard would it be to use a 5.0 (w/ roller cam) and use it in the '73?
The plan would be to use an early 302 carb intake.
I know the firing order is different, the timing cover would have to be changed for a mechanical fuel pump or an inline electric pump could be used. I'd also assume that the pan and oil pump would have to be changed to the early 302 type? Finally, I think the clutch pivot from the original block would have to be swapped to the 5.0 to keep the early clutch linkage.

What am I forgetting?

THANKS!
 
  • Sponsors(?)


Rusty67

15 Year Member
Dec 3, 2002
3,749
36
109
Seattle area, WA
Sounds like you got just about everything. I think the clutch pivot is cast into the engine block. They sell an aftermarket bracket for the 5.0 motors. The oil pump doesn't need to be changed, just the pickup and the pan. Your flywheel wont work unles you reballance it for 50oz imballance, your early motor is a 28oz imballance. You will need to swap the cam gear on your distributor to the late model cam gear otherwise your cam gear will get destroyed by the newer 5.0 cam as it is much harder. The firing order is the same as a 351w motor. You can plug the hole in the 5.0 block for the dip stick and use the early timing cover. You will also need to swap in the cam excentric for the fuel pump. Use the motor mounts for your year car. Change the oil pressure and tempurature sending units to match the gauges in your dash.

I think that covers it.
 

oz

Founding Member
Jun 29, 2000
1,066
1
38
Plymouth, MI
Visit site
OK, thanks. I take it from your reply that a long block won't come with a balancer and the 5.0 would need the 50 oz balancer as opposed to the 28 oz that is on the 302, correct?

What about the flywheel - is there any difference there or is it internally balanced (not related to overall engine balance)?

Thanks again.
 

Rusty67

15 Year Member
Dec 3, 2002
3,749
36
109
Seattle area, WA
I was figuring you were going to get the whole motor with the accessory drive/pumps which would come with the ballancer. Were you just going to order a long block from Ford racing or another engine builder ? I think a long block will come with a proper ballancer but I'm not sure.

Did you want to keep the vbelt or go to a serp setup ?
 

oz

Founding Member
Jun 29, 2000
1,066
1
38
Plymouth, MI
Visit site
The back story is that my uncle bought a '73 with a toasted 302 w/ 2BBL and 3 speed. He is planning to buy a long block from the local parts store. I suggested that he consider getting the 5.0 instead of the 302 since it has better flowing heads, a roller cam and the one piece rear main oil seal.
I'm pretty sure he'll use the V belt setup along with his '73 intake, carb, exhaust, etc.
I wanted to find out what else he'd need to consider so that there aren't any surprises if he decides to go with the 5.0. I want to make sure it isn't too expensive or a pain in the butt to do the conversion before he goes and buys the engine.

Thanks!
 

oz

Founding Member
Jun 29, 2000
1,066
1
38
Plymouth, MI
Visit site
I've never bought one although I would rather rebuild what I have than trust someone else to do it. I think my uncle just wants to get the thing running now and isn't interested in rebuilding the engine. It's been sitting for 30 years and has pretty low compression on a couple of cylinders. I believe it's rebuildable though.

What about Jasper or Edelbrock or the Ford Motorsports long blocks? Are they any better?
 

Rusty67

15 Year Member
Dec 3, 2002
3,749
36
109
Seattle area, WA
The blocks from engine builders are fine. I just wouldn't run a parts store recon. Any racing/performance aftermarket long block will be fantastic.
 

horse sence

That $5 hooker turn out to be a guy
Mod Dude
Nov 29, 1999
9,214
3,658
233
Wile Coyote's stunt double
The blocks from engine builders are fine. I just wouldn't run a parts store recon. Any racing/performance aftermarket long block will be fantastic.
your correct about parts store blocks ,we put one in a 65 convert ,shook so bad we thought it was going to come apart, opend it up a found rods with three different date castings ,seems they are built with what ever they can find, dont go that rout
 

oz

Founding Member
Jun 29, 2000
1,066
1
38
Plymouth, MI
Visit site
Another question - If someone wanted to keep the 5.0 timing cover (and run an electric inline fuel pump), what water pump would fit the 5.0 cover while still using the 302 forward rotating V belt setup (not a reverse rotation water pump like 5.0) ?
 

Rusty67

15 Year Member
Dec 3, 2002
3,749
36
109
Seattle area, WA
Unless you are using the later style short pump timing cover, the flange pattern for the water pump is the same for a standard or reverse rotation pump with the outlet on either side.
 

oz

Founding Member
Jun 29, 2000
1,066
1
38
Plymouth, MI
Visit site
2+2GT, Thanks for the info.

A follow up - Can the '73 timing cover be used with the 5.0 timing chain/gears? If I remember correctly, the 5.0 timing set is thinner - so this would work - but no fuel pump cam.

I know this would necessitate putting a cover plate over the mechanical fuel pump opening and plugging the 5.0 dip stick hole too.

Thanks again!
 
Thread starter Similar threads Forum Replies Date
T Late fox dash in a early fox swap. Who's done it? I need help. Fox 5.0 Mustang Tech 4
0 Need Help Transmission Swap 2005 - 2009 Specific Tech 1
T 64.5 D code auto to 4 spd manual trans swap advice/info needed Classic Mustang Specific Tech 4
W 97 Mustang GT Engine Swap (Need Help) 1996 - 2004 SN95 Mustang -General/Talk- 5
6 Help Need for a 4 cylinder swap with a microsquirt!!!!! Digital Self-tuning Forum 5
K Need Motor Swap Help!! 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 2
C Need a little advice on 2000 3.8 to 5.0 swap. 1996 - 2004 SN95 Mustang -General/Talk- 7
S 2002 V6 TO V8 SWAP NEED INFO 1996 - 2004 SN95 Mustang -General/Talk- 0
J 1989 wont start after motor swap Fox 5.0 Mustang Tech 79
S 2002 V6 - swap to V8. Need recommendation for a good shop in Houston area that has done this before. Thanks in advance. 1996 - 2004 SN95 Mustang -General/Talk- 1
T Engine 1990 5.0- Overheating and Smoke after Head Swap (Need advice ASAP) Fox 5.0 Mustang Tech 3
T Need help with Wiring (obd2/DLC) SN95 4.6L Mustang Tech 2
T 93 Foxbody 2.3 auto V8 Swap need HELP! Fox 5.0 Mustang Tech 7
M Brakes Foxbody sn95 5 lug swap need help Fox 5.0 Mustang Tech 10
M 1974 302 with C4 swapping to AOD..... need guidance please 1974 - 1978 Mustang II Talk & Tech 2
ebowie SN95 SN95 GT to Cobra brake swap... in need of rear caliper mounting brackets and anti-moan brackets 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 2
B Swapping transmissions need info 1996 - 2004 SN95 Mustang -General/Talk- 1
S what is needed to swap 03-04 4v into 2002 gt? 1996 - 2004 SN95 Mustang -General/Talk- 0
ThinBlueCobra 2001 3.8L Windstar Intake Manifold Swap - NEED HELP!! 1996 - 2004 SN95 Mustang -General/Talk- 6
M 1989 foxbody coupe irs swap needs 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 17
G Progress Thread A/C install/swap help needed Fox 5.0 Mustang Tech 0
W Need Help With My Fox Body Irs Swap ! Fox 5.0 Mustang Tech 17
B I Really Need Help! 3.8 Engine Swap 1996 - 2004 SN95 Mustang -General/Talk- 6
9 Need Help - Inlet Oil After Intake Swap Fox 5.0 Mustang Tech 4
M 5.0 Swapping A 1986 3.8 Mustang Need Advice! 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 0
A 2001 Cobra Engine Advice Needed 1996 - 2004 SN95 Mustang -General/Talk- 7
92Apocalypso Need A Quick Answer On Differences With Ball Joints And Control Arms After Doing 5 Lug Swap 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 10
T Everything Needed For A Carb 302 Swap In A 1993 Coupe!! Help 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 11
Ethan Keirn I Need Advice! 1996 - 2004 SN95 Mustang -General/Talk- 24
cmerk27 1998 Mustang Gt Engine Swap. I Need Help! SN95 4.6L Mustang Tech 6
C Need Help Carb Swap Fuel Pressure To High Fox 5.0 Mustang Tech 29
N New Project, Need Help 1996 - 2004 SN95 Mustang -General/Talk- 2
Eric77 Engine Need Any Info On Swapping To A 393 Stroker Fox 5.0 Mustang Tech 3
Possessed94 Carb Swap Fuel Setup(help Needed) 1994 - 1995 Specific Tech 8
jw3st0n Progress Thread Pcm Swap, (need Help With Pats) 1996 - 2004 SN95 Mustang -General/Talk- 0
jw3st0n Hello Everyone! (i Need Help) The Welcome Wagon 2
T Engine Swap 1996-2004 Need Advice 1996 - 2004 SN95 Mustang -General/Talk- 2
j0rd4n Do I Need To Tune Ecu After Engine Swap? Fox 5.0 Mustang Tech 19
S New Engine Put In 2000 Mustang Gt, Need Help! SN95 4.6L Mustang Tech 8
N Need Help With A T5 Swap Fox 5.0 Mustang Tech 4
C 8.8 Gear Swap "need Help" Fox 5.0 Mustang Tech 6
1 99 Mustang.. 302-351 Swap Need Help 1996 - 2004 SN95 Mustang -General/Talk- 1
R Swapping Tranny Need Some Help Fox 5.0 Mustang Tech 1
N 2014 Radiator Needs Swapping 2005 - 2014 S-197 Mustang -General/Talk- 1
JchamperIII 1989 Aod To T5 Swap Complete. Having Issues Getting Into First. Help Needed! Fox 5.0 Mustang Tech 6
FiveOhSwap98 Planning On Doing A 4.6, Or 5.0 Swap! Need Tips :) 1996 - 2004 SN95 Mustang -General/Talk- 7
L Need Help With 351 W Swap Fox 5.0 Mustang Tech 2
silviapunk1987 302 Swapped 240sx Need Dry Sump Pump Drive Specs Or Oil Help Plz Fox 5.0 Mustang Tech 3
modulistic 4.6 Swap Underway. Need Ideas To Solve Rear Axle Problem. Fox 5.0 Mustang Tech 31
8 What Do I Need To Know To Do A 6 Speed Swap ,or Should I Not Fox 5.0 Mustang Tech 6
Similar threads