SBF question from a Bow Tie guy
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Laughing Gas
Joined: Dec 2009
Posts: 938
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From: Bishop, CA
SBF question from a Bow Tie guy
Having just recently(last couple of years)learned that it was possible to put a cam with a 351W firing order in a 302, I've got a question for you guys.
I've read(in here)where you can't tell the difference between a 390 and the similar-but-smaller motors without opening them up.
So, is there any way to tell a true 351W from a 302 with an aftermarket cam with a 351 firing order without checking bore and stroke?
I'm checking to see that a 302 didn't mysteriously become a 351W somewhere along the way.
BTW, just 'cuz I worked for GM dealerships for 24 years doesn't mean my shop truck isn't a '61 F-100.
Also seems like all the Mustang guys in Arkansas found me...we've done 3 in the year+ I've been running this place and another one is due in in Nov.
I've read(in here)where you can't tell the difference between a 390 and the similar-but-smaller motors without opening them up.
So, is there any way to tell a true 351W from a 302 with an aftermarket cam with a 351 firing order without checking bore and stroke?
I'm checking to see that a 302 didn't mysteriously become a 351W somewhere along the way.
BTW, just 'cuz I worked for GM dealerships for 24 years doesn't mean my shop truck isn't a '61 F-100.
Also seems like all the Mustang guys in Arkansas found me...we've done 3 in the year+ I've been running this place and another one is due in in Nov.
Posting Guru
Joined: Oct 2007
Posts: 1,144
Likes: 0
From: Sedro-Woolley, WA
Same block and bore. The 302 has a 3" stroke where the 351's is 3.50.
I'm not sure if you can check the stroke on these by running a dowel through the spark plug hole and turning the motor from TDC to BDC and measuring the distance.
Anyone?
I'm not sure if you can check the stroke on these by running a dowel through the spark plug hole and turning the motor from TDC to BDC and measuring the distance.
Anyone?
Elder User
Joined: Jun 2012
Posts: 522
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Are you doing total restores?
Posting Guru
Joined: Nov 2008
Posts: 1,255
Likes: 2
From: Santa Monica, CA
The 351W has a taller deck height and wider intake than the 302. I know the heads will usually interchange but that's about it. I'm not sure about the exact measurements but for the intake widths I think the 351W is about 11" wide and the 302 is about 9". You can do a search in the engine section or on the internet to find more specifics. Hope that helps a little....
Post Fiend
Joined: Nov 2000
Posts: 6,060
Likes: 7
From: Glendale Arizona
Also look to the Water pump to intake hose.
302 is a 90 and done.
351 is a 90 and about 2 inches of hose.
The tall deck is where you run in to issues with headers for 302s as thay sit higher in the chassis and run in to things.
Garbz
302 is a 90 and done.
351 is a 90 and about 2 inches of hose.
The tall deck is where you run in to issues with headers for 302s as thay sit higher in the chassis and run in to things.
Garbz
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Laughing Gas
Joined: Dec 2009
Posts: 938
Likes: 0
From: Bishop, CA
Thanks guys. After I posted this yesterday I had to go to Harrison AR. to score some parts for one of the Mustangs. The guy there had a whole room full of engines and there was a 351 and a 302 sitting side by side. Pretty easy to pick out the differences when the 2 engines are sitting on the ground.
OBP, yes, we'll do anything from a frame-off complete restoration to just paint jobs. The Mustang we're about to finish got new floors from the firewall all the way to the back bumper, new quarter panels, and the filler piece between the back window and the deck lid. On the other hand, the '89 F150 we just finished was just take the body apart and change the color from gray/white to solid blue., fix some dents and Rhinoline the bed. Check us out: www.vincesvintage.net
Anybody needs any Mustang parts, I've got a great contact in Harrison. He's 86 years old, sharp as a tack and has about $1,000,000 in inventory, used and new parts. Heck he was even showing me a rack of about 10 true 64 1/2 hoods, brand new hoods. Another learning experience, I didn't know there was a difference between the 64 1/2 and 65 hoods. Old guy loves to talk about cars.
OBP, yes, we'll do anything from a frame-off complete restoration to just paint jobs. The Mustang we're about to finish got new floors from the firewall all the way to the back bumper, new quarter panels, and the filler piece between the back window and the deck lid. On the other hand, the '89 F150 we just finished was just take the body apart and change the color from gray/white to solid blue., fix some dents and Rhinoline the bed. Check us out: www.vincesvintage.net
Anybody needs any Mustang parts, I've got a great contact in Harrison. He's 86 years old, sharp as a tack and has about $1,000,000 in inventory, used and new parts. Heck he was even showing me a rack of about 10 true 64 1/2 hoods, brand new hoods. Another learning experience, I didn't know there was a difference between the 64 1/2 and 65 hoods. Old guy loves to talk about cars.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Hey bro, Share some luv with the rest of us here, what is the difference between true 64 1/2 hood and 65?? I have become an old fart without knowing this thing.
Help.
John
Help.
John
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FTE Chapter Leader
Joined: May 2006
Posts: 12,338
Likes: 1,314
From: Central Mississippi
For future reference, generally the quickest way to ID a 351 from a 302 is an angled support rib cast into the distributor boss on the 351.
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