351w 302 question

shadowgames81 · May 30th, 2008, 05:49 PM

Question is I heard the blocks were the same block just heads are different deck height. But then in another thread someone said the 351w block can handle more power than the 302. Is this true and if they are the same block then how?

MIGHTYJO3YOUNG · May 30th, 2008, 05:57 PM

i'm pretty sure they aren't the same block, because when doing a swap you have to change out things like intake, flywheel and oil pan. They are just similar.

r.barn · May 30th, 2008, 06:23 PM

Think of the 351W as the big brother to the 302.

They are very similar.

They have same lower mounting points and dimensions
i.e. bellhousing bolt patter, motor mount location, ect ect.

The deck height is taller on the 351 giving it a longer stroke and more cubes
This spreads the heads apart and up a little, so lower intakes are wider.

Heads are interchangeable, but the 302 use 7/16 head bolts and the
351 use 1/2"

Stock for stock the 351W block is a good deal stronger than the 302.
The crank and rods are stonger and the casting on the block itself is
beefier in several places.

The 351W is about 3" taller over all and weighs about 100lbs more.

vfast · May 30th, 2008, 07:30 PM

the web is a ton better on the 351...the engine will sit taller but with a set of vert motor mounts will help that

1989Gt. · May 30th, 2008, 07:36 PM

and b oth sexy lol

vfast · May 30th, 2008, 07:37 PM

dude did you get booted from MF?

Originally Posted by r.barn

Think of the 351W as the big brother to the 302.

They are very similar.

They have same lower mounting points and dimensions
i.e. bellhousing bolt patter, motor mount location, ect ect.

The deck height is taller on the 351 giving it a longer stroke and more cubes
This spreads the heads apart and up a little, so lower intakes are wider.

Heads are interchangeable, but the 302 use 7/16 head bolts and the
351 use 1/2"

Stock for stock the 351W block is a good deal stronger than the 302.
The crank and rods are stonger and the casting on the block itself is
beefier in several places.

The 351W is about 3" taller over all and weighs about 100lbs more.

shadowgames81 · May 30th, 2008, 09:42 PM

interesting...thanks for the tidbits of info

trueblue01 · May 31st, 2008, 08:09 AM

Two different blocks altogether. Deck height refers to the distance from the crank centerline to the top of the deck (cylinder bore). There are several variations even in 351 and 302s.

jonboy2389 · May 31st, 2008, 08:13 AM

damn r.barn you got a 351 twin turbo...shit must screwww, run any times?

May 30th, 2008, 05:49 PM	#1
shadowgames81 Hardcore Enthusiast 87 Coupe Join Date: Sep 2006 Location: Hampton, VA Posts: 1,220 iTrader: 3 reviews	351w 302 question Question is I heard the blocks were the same block just heads are different deck height. But then in another thread someone said the 351w block can handle more power than the 302. Is this true and if they are the same block then how?

May 30th, 2008, 06:23 PM	#3
r.barn Regular 1989 LX Vert - 1993 Notch Fast Join Date: May 2008 Location: Houston Posts: 398 iTrader: 0 reviews	Think of the 351W as the big brother to the 302. They are very similar. They have same lower mounting points and dimensions i.e. bellhousing bolt patter, motor mount location, ect ect. The deck height is taller on the 351 giving it a longer stroke and more cubes This spreads the heads apart and up a little, so lower intakes are wider. Heads are interchangeable, but the 302 use 7/16 head bolts and the 351 use 1/2" Stock for stock the 351W block is a good deal stronger than the 302. The crank and rods are stonger and the casting on the block itself is beefier in several places. The 351W is about 3" taller over all and weighs about 100lbs more. __________________ The last President elected in anger of previous President was ....... Jimmy Carter God Help Us Last edited by r.barn; May 30th, 2008 at 06:25 PM.

May 30th, 2008, 07:30 PM	#4
vfast Banned Join Date: Aug 2005 Location: shimmy shack takeout Posts: 1,084 iTrader: 0 reviews	the web is a ton better on the 351...the engine will sit taller but with a set of vert motor mounts will help that __________________ EVERYONE IS ENTITLED TO MY OPINION:cool: 6'ers are for kids 1965 chevelle SS 421 sbc 6 speed, 3.90 gears,alum d-shaft, brodix heads,roller cam,925 AED carb...grocery getter[COLOR="Red"]RIP[/COLOR]

May 31st, 2008, 08:09 AM	#8
trueblue01 Enthusiast 1989 Mustang LX 10.98@126.7 NA Join Date: Feb 2008 Location: N.E. Ohio Posts: 698 iTrader: 0 reviews	Two different blocks altogether. Deck height refers to the distance from the crank centerline to the top of the deck (cylinder bore). There are several variations even in 351 and 302s. __________________ Never fast enough.

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May 30th, 2008, 05:57 PM	#2
MIGHTYJO3YOUNG Enthusiast 1992 mustang Lx 13.4@ 106 Join Date: Dec 2006 Location: MD Posts: 569 iTrader: 0 reviews	i'm pretty sure they aren't the same block, because when doing a swap you have to change out things like intake, flywheel and oil pan. They are just similar.

May 30th, 2008, 07:36 PM	#5
1989Gt. Hardcore Enthusiast 1989 Mustang GT Join Date: Apr 2008 Posts: 2,799 iTrader: 0 reviews	and b oth sexy lol

May 30th, 2008, 09:42 PM	#7
shadowgames81 Hardcore Enthusiast 87 Coupe Join Date: Sep 2006 Location: Hampton, VA Posts: 1,220 iTrader: 3 reviews	interesting...thanks for the tidbits of info

May 31st, 2008, 08:13 AM	#9
jonboy2389 Newbie 1989 mustang gt ? Join Date: May 2008 Location: new bedford mass Posts: 13 iTrader: 0 reviews	damn r.barn you got a 351 twin turbo...shit must screwww, run any times?

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