ok so i have a 306 with 351w heads on it...I will be getting new headers for her soon because the ones i have have seen better days, also they would rest on the frame of the car ..
who here can tell me if 302 headers will fit on 351w heads or do i need to get 351w headers?
and what long tube headers can i get that wont rest on the frame of the car or do i need to get shorty headers? oh and its a 88 notchback
thanks
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88 mustang coupe.....6.cage,90/10's,50/50,410gears,sump tank,2 holly fuel pumps,southside frame conectors,306 motor,block has been bored and honed,square deck,linehoned,speed pro cam,540 lift,forged aliminum rods,shot peened and polished,harden steeled crank,arp studs,high volume oil pump,high preformance timing chain,351w heads,fully ported,1.6 roller rockers,750 holly double pumper,cowl hood and saleen wing
You will have to get 351 specific headers. Just try google. there are a few companies that make them, i just cant think of them off the top of my head.
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1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
There are no external differences in Windsor heads.
If he had a 351 block the deck height would be taller and then he might need 351 specific headers because of interference with the body or accessories.
There are no external differences in Windsor heads.
If he had a 351 block the deck height would be taller and then he might need 351 specific headers because of interference with the body or accessories.
Any 5.0 header/manifold will fit the 351W heads.
My thoughts exactly! I was reading these responses and thinking "why would he need special headers"? Any headers made for a 302 fox should work. If the headers are hitting the frame, then the engine is not in the stock location, most likely due to either dropped, or worn motor mounts.
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OFR - old fart racing
We're not the fastest car at the track but we might be having the most fun.
If you're not having fun, then you're taking this stuff too seriously!
The 351 is a taller motor. Even though it uses the same heads, if he uses 302 long tubes lets say, the collector will most likely be right up against the bottom of the body.
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1993 GT Hatch: 306 with Twisted Wedge heads,TFS stage one cam,TFS upper/lower intake, 190lph fuel pump, 30lb injectors, 70mm TB/EGR plate, Granatelli MAF= now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
Marine Detachment, Keesler AFB, Biloxi MS
OOORAAHH!!!
The 351 is a taller motor. Even though it uses the same heads, if he uses 302 long tubes lets say, the collector will most likely be right up against the bottom of the body.
If I'm reading the original post right he has a 306 with 351 heads, not a 351 engine. Since he has an 8.2 deck motor, 302 headers should work whether he has 351 heads on it or not.
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OFR - old fart racing
We're not the fastest car at the track but we might be having the most fun.
If you're not having fun, then you're taking this stuff too seriously!
The 351 is a taller motor. Even though it uses the same heads, if he uses 302 long tubes lets say, the collector will most likely be right up against the bottom of the body.
Yes, the difference is in the block.
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1992 Deep Emerald Green Mustang GT Hatch, 5 speed, 2.73s, Mac fenderwell cold air intake, '93 Cobra MAF, Mac 70mm throttle body & spacer, Explorer intakes, Mac unequal headers & offroad pipe, Magnaflow catback, Walbro 110lph fuel pump, Jet adjustable FPR, MSD Blaster coil, Accel 8mm wires, FRPP aluminum quadrant, UPR firewall adjuster, stock cable, Granatelli upper control arms.
Waiting to go on: Granatelli lower control arms, and GT40 Iron heads!
The only difference in specific 351 heads is the bolt holes are 1/2 in. vs the specific 302/5.0 heads with 7/16 in. bolt holes. You need reducing washers to use the 7/16 in. bolts in the 351 head. There were some 351 heads that had "dog leg" shaped cooling passages also. ---Chuck
P.S. The 351 I'm refering to is the Windsor engine.
306 with 351 Heads, What headers will I need? 
now using Pro-M, Lakewood upper/lower control arms, powertrax diff, subframe connectors, Eibach springs, aluminum ds, t56 trans, Eibach swaybars, Flowtech LT's, Magnaflow CB, 17x10.5 deep dish cobras in rear, 17x9 cobras in front.
