351W Heads on a 87 302 Block

NitroNixon · 05-08-2003, 12:50 PM

I was told I need to use the heads that came off the fuel injection 351W since I'm planning to stick with fuel injection. Is this true? I have a chance to purchase a set of rebuild 351W heads from a fuel injected F-150. Can I use these heads? Or does it even matter what year 351W heads I use? Will these head make more power than my stock E7 heads?

Thanks for any replies

NitroNixon

Dark Knight · 05-08-2003, 02:49 PM

the late model 351 heads are the same as what you have... if you want to pick up the performance, get a set of 70 351w heads, but they arent drilled for the air pump lines...

NitroNixon · 05-08-2003, 02:56 PM

thanks for the warning, I guess I would have been wasting my time with these heads. Do you mean that these heads have the same castings as the E7?

86GT · 05-08-2003, 03:41 PM

I'm not sure of the exact year but I remember reading something about 74-76 351W heads flowing the same as the 69-70 and having smog ports in them. I'll try to find the book where I read it in, but do a search on early 351W heads, otherwise any Windsor style head out there would work.

tarmon8r · 05-08-2003, 08:58 PM

351 also uses 1/2 inch head bolts, while the 302 uses 7/16 inch, so you need to get the adapter also. But i would also recommend that you only put those heads on a fairly modified 302. Remember, bigger isnt always better, its about port velocity, expect to lose some bottom end torque.

Shaggy · 05-08-2003, 09:29 PM

Quote:

Originally posted by 86GT
I'm not sure of the exact year but I remember reading something about 74-76 351W heads flowing the same as the 69-70 and having smog ports in them. I'll try to find the book where I read it in, but do a search on early 351W heads, otherwise any Windsor style head out there would work.

This is true once ported but not ported the egr bump in these heads are HUGE.....

05-08-2003, 12:50 PM	#1
NitroNixon Registered Member Join Date: Mar 2002 Location: DC Posts: 129	351W Heads on a 87 302 Block I was told I need to use the heads that came off the fuel injection 351W since I'm planning to stick with fuel injection. Is this true? I have a chance to purchase a set of rebuild 351W heads from a fuel injected F-150. Can I use these heads? Or does it even matter what year 351W heads I use? Will these head make more power than my stock E7 heads? Thanks for any replies NitroNixon __________________ 87 GT As of 2/1/06 650 DP Carb Crosswind Intake Edelbrock Performer Heads 97 Explorer Bottomend w/ B-303 Cam 1.7 Roller Rockers Flowtech Longtube Headers Flowtech H-Pipe MSD Black Wires MSD ignition MSD Distributor Blaster 3 Coil Electric Fan Underdrive Pullies T5 Trans Hurst Shifter Lowered 1.5" 373 Gears

05-08-2003, 02:49 PM	#2
Dark Knight Registered Member Join Date: Oct 1998 Location: Az Posts: 854	the late model 351 heads are the same as what you have... if you want to pick up the performance, get a set of 70 351w heads, but they arent drilled for the air pump lines... __________________ 84 convt,roller 302,AFR's, performer 3.55's, underdrives BBK shorties stock cam, 1.7's 13.58@102.84 and a '68 stang .. project 8 sec street car... 557 big block + N20 :-) http://members.cox.net/darkknight302/68nwrear.jpg

05-08-2003, 02:56 PM	#3
NitroNixon Registered Member Join Date: Mar 2002 Location: DC Posts: 129	thanks for the warning, I guess I would have been wasting my time with these heads. Do you mean that these heads have the same castings as the E7? __________________ 87 GT As of 2/1/06 650 DP Carb Crosswind Intake Edelbrock Performer Heads 97 Explorer Bottomend w/ B-303 Cam 1.7 Roller Rockers Flowtech Longtube Headers Flowtech H-Pipe MSD Black Wires MSD ignition MSD Distributor Blaster 3 Coil Electric Fan Underdrive Pullies T5 Trans Hurst Shifter Lowered 1.5" 373 Gears

05-08-2003, 03:41 PM	#4
86GT Sniffed too much n20 Join Date: Oct 1998 Location: Ont, Canada Posts: 1,018	I'm not sure of the exact year but I remember reading something about 74-76 351W heads flowing the same as the 69-70 and having smog ports in them. I'll try to find the book where I read it in, but do a search on early 351W heads, otherwise any Windsor style head out there would work. __________________ 2002 Windsor Weekend Q16 Qualifier

05-08-2003, 08:58 PM	#5
tarmon8r Registered Member Join Date: Jun 2002 Location: manassas, va Posts: 186	351 also uses 1/2 inch head bolts, while the 302 uses 7/16 inch, so you need to get the adapter also. But i would also recommend that you only put those heads on a fairly modified 302. Remember, bigger isnt always better, its about port velocity, expect to lose some bottom end torque. __________________ 1983 mustang, 393 cubic inch stroker small block, victor jr heads and intake, gold race 1.6 roller rockers. comp cam 304, 244@ .050. .576" hydralic retro roller cam,lunati rods. block was o-ringed,10:1 forged pistons, speed pro fit fit rings, clevite bearings,msd distributor and igniton,be cool huge radiator, black lite electric fan, march underdrive pulleys, mildon deep sump oil pan, mac 1 3.4" long tube headers, 3" dr gas x-pipe and mac exhaust,ARP bolts. car weighs 2900 lbs w/out driver, sub frames, weld wheels, mickey thompson sportsman pro 26 x 10.5 x 15's,#8 fuel line steel braided

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