302 to 351w swap

gunslinger8200 · 10-20-2002, 07:14 PM

I have a 1980 mustang, I blew up the 302 in it and I found a really nice 351W for it. I know its 3 inches taller and 2 inches wider than a 302, so I was wondering if I would have to change anything? Also i was wondering if anyone knows what cars used the dual sump 351W oil pan? and will the headers work from my 302?

GodStang · 10-20-2002, 08:52 PM

You can use everything from your 5.0 except the Headers, Lower intake, flywheel, and Harmonic balancer. At least that is what I have read.

DemonGT · 10-20-2002, 09:01 PM

probubly need a new oil pan...

GodStang · 10-20-2002, 09:16 PM

Oh yeah oil pan too. I think the Crown Vic. had the double sump.

gunslinger8200 · 10-20-2002, 09:49 PM

Ya, someone else had said i might have to change the headers. Does anyone know why I would have to change the headers? I had 351W heads on my 302, so I don't really get why I'd have to change then?

82 GT · 10-20-2002, 10:19 PM

You have to change the headers because the header tubes are routed different for the 302 and 351's.
Yes, the headers will fit on the 351 but they won't clear the steering shaft when you put the engine in the car.
Trust me on this.............been there done that.
Also, don't let the guy/kid behind the parts counter tell you that the 302 headers will fit.................they won't

10-20-2002, 07:14 PM	#1
gunslinger8200 Registered Member Join Date: Feb 2002 Location: Wisconsin Posts: 7	302 to 351w swap I have a 1980 mustang, I blew up the 302 in it and I found a really nice 351W for it. I know its 3 inches taller and 2 inches wider than a 302, so I was wondering if I would have to change anything? Also i was wondering if anyone knows what cars used the dual sump 351W oil pan? and will the headers work from my 302?

10-20-2002, 08:52 PM	#2
GodStang College Stanger Join Date: May 1999 Location: Aiken,south carolina, usa Posts: 1,097	You can use everything from your 5.0 except the Headers, Lower intake, flywheel, and Harmonic balancer. At least that is what I have read. __________________ 2003 Sonic Blue Cobra

10-20-2002, 09:01 PM	#3
DemonGT Registered Member Join Date: Aug 2000 Location: Wisconsin Posts: 879	probubly need a new oil pan... __________________ '91 GT,410W,10.5 to 1 comp,Victor Jr. heads,Victor 5.8 intake,FTI cam,Crane retro fit lifters,Scorpian 1.6 RR's,Melling HV oil pump,MSD distro.,Canton oil pan,FMS flywheel,Romac balancer,FMS timing chain,Accufab 90mm TB,C&L 76mm maf, 42lbers,HD clutch,K&N air filter,Mac long tubes,Pro dumps,powerchamber,FMS 9mm wires,180 thermostat,Ford Racing gauges,5inch Tach,centerline convo pro's,nitto DR's,Pro3i lower control arms,50/50 shocks,3.55 gears,TFS HD diff. cover Next year: Tremec TKO,Spec stage 3 clutch,alum driveshaft,complete fuel system www.angelfire.com/linux/demondan

10-20-2002, 09:16 PM	#4
GodStang College Stanger Join Date: May 1999 Location: Aiken,south carolina, usa Posts: 1,097	Oh yeah oil pan too. I think the Crown Vic. had the double sump. __________________ 2003 Sonic Blue Cobra

10-20-2002, 10:19 PM	#6
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	You have to change the headers because the header tubes are routed different for the 302 and 351's. Yes, the headers will fit on the 351 but they won't clear the steering shaft when you put the engine in the car. Trust me on this.............been there done that. Also, don't let the guy/kid behind the parts counter tell you that the 302 headers will fit.................they won't __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

10-20-2002, 09:49 PM	#5
gunslinger8200 Registered Member Join Date: Feb 2002 Location: Wisconsin Posts: 7	Ya, someone else had said i might have to change the headers. Does anyone know why I would have to change the headers? I had 351W heads on my 302, so I don't really get why I'd have to change then?

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