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Author Topic:   ford motor weight difference
pmiracing
Dirt Full Roller

Total posts: 44
posted February 11, 2004 06:40 PM  
does anybody know the weight difference between a 351W and 351C? how do they compare to a 350 chevy or a 360 dodge?

dirtracer7
Dirt Freak

Total posts: 337
posted February 11, 2004 07:06 PM  
I don't know what a 351c weights but a 302 is about 95 less than a 351w and about 40 lbs. less than a sbc.

supwitchew
Dirt Maniac

Total posts: 122
posted February 12, 2004 07:41 AM  
The 351C, 350 Chevy, and 360 Mopar weigh pretty close to the same at around 550 lbs. The Chevy's actually range from 535 lbs. to 575 lbs. depending on the year of the block. The older ones weigh more. The 351M weighs a little more the the 351C. The 351W is lighter at 510 lbs. A 302 is about 460 lbs. A 302 Boss is about 500 lbs.

Aren't Fords great?

supwitchew
Dirt Maniac

Total posts: 122
posted February 12, 2004 07:51 AM  
By the way, a lot of my posted information was taken from the internet....I don't want anybody thinking I'm smart....that would be misleading.

pmiracing
Dirt Full Roller

Total posts: 44
posted February 12, 2004 04:11 PM  
I wonder why you don't see more guys running 289's or 302's for the major front end weight loss?
thanks

chad01j
Dirt Forum Racer

Total posts: 82
posted February 12, 2004 04:41 PM  
what about a pontiac 350 or 400? anybody have an idea how much those weigh?

pmiracing
Dirt Full Roller

Total posts: 44
posted February 12, 2004 05:15 PM  
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Special Ed
Dirt Full Roller

Total posts: 63
posted February 26, 2004 08:21 PM  
The thing with not running a 289 or 302 to get the weight advantage is because the blocks are not strong enough to handle the stress of lots of horsepower. I know two different guys with mods that were running 347's with stock blocks and their blocks litterally split from front to back under the intake.

ford5
Dirt Forum Champ
Total posts: 711
posted February 27, 2004 05:08 AM  
i have been running 347s for 5 yrs now, and have NEVER had that happen. maybe you should try....Mythbusters LOL

outlawstock17
Dirt Forum Champ
Total posts: 1363
posted February 27, 2004 06:14 AM  
yep, a mythbuster indeed. ford blocks are cast from a better material than chevrolets. mopars are even harder. bore a few of each and you'll know what i mean. the factory machine work on a ford is better than a chevrolet too.....when was the last time you saw a ford block that needed the lifter bores straightened up or a line bore?

i did see a 302 with 4 busted main caps though.....didn't even know it until the engine was pulled to be freshened.....pulled the main caps off and 4 of them came off in 2 pieces!!! the bearings still looked good and the engine was running like a top.....put the reciprocating assembly in another block and kept going...

stockcar5
Dirt Forum Champ
Total posts: 578
posted February 27, 2004 11:01 AM  
my buddies 350 was like that...3 split caps that they found when they went to freshen it! just put the rotating parts in another block and ran it the rest of the year!!

i could never get that lucky


luke

------------------
www.geocities.com/dirtstockcar5

Special Ed
Dirt Full Roller

Total posts: 63
posted February 27, 2004 01:06 PM  
I don't doubt what you guys say but believe me when I tell you they busted their blocks. I don't know all the particulars but what I tell you is true. No mythbuster needed here.

pmiracing
Dirt Full Roller

Total posts: 44
posted February 29, 2004 05:31 PM  
Has anyone with a ford motor had a distributor gear wear through? I had it happen on my 351w and a friend of mine just had it happen on a 460. I know it's from the hi volume oil pump, but what do you do to prevent it? my 351 only had about 20,000 miles on a new rebuild with a new cam( destroyed the cam gear to)

outlawstock17
Dirt Forum Champ
Total posts: 1363
posted February 29, 2004 06:13 PM  
3 things....

1) be sure you have the correct distributor gear for the cam. hydraulic and solid should be fine with the cast iron gear. hydraulic roller should have the steel billet gear and a solid roller should have a bronze gear.

2) be sure you have the engine up to operating temperature BEFORE you race it or run it hard. synthetic oil is also helpful in preventing premature failure.

3) the distributor gear and cam gear must mesh correctly. there should be 4" from the surface where the distributor fits against the block and the bottom of the distributor gear.


gangster fords
Dirt Roller

Total posts: 13
posted March 01, 2004 12:35 AM  
AS TO YOUR MITH-BUSTER! I AM THE GUY THAT SPLIT THE 302. IT WAS A 347 WITH 12.5 TO 1 COMP. I WAS TURING IT ABOUT 7500 RPM'S THE ENGINE HAD ABOUT 17 OR 18 NIGHTS ON IT
CAME OFF THE CORNER AND IT WAS LIKE I SHUT THE SWITCH OFF. GOT BACK TO PITS PULLED OUT PLUGS AND WATER CAME OUT...THOUGHT BLEW A GASKET OR SOMETHING. NEXT DAY TORE IT DOWN AT THE SHOP AND IT SPLIT THE BLOCK ALL THE WAY DOWN THE LIFTER GALLEY ,DOWN BESIDE THE TIMMING CHAIN AND ON THE RIGHT SIDE OF EVERY MAIN. I HAD STUDS WITH A GIRDLE....BECAUSE I FIGURED SOMEBODY WOULD ASK THAT. IT DIDNT EVEN SCRATCH A CAM BEARING OR HURT THE TIMMING CHAIN. I USED EVERYTHING BACK IN ANOTHER BLOCK EXCEPT RINGS BEARING ECT. SO AS FAR AS SPECIAL ED, TELLING YOU THE TRUTH? TAKE IT TO THE BANK!! ONE THING I THINK IS THE WAY TO GO RUNNING THE 302 STYLE BLOCK IS TO EATHER GET A MEXICAN BLOCK OR BITE THE BULLET AND GET A DART BLOCK WICH IS A LOT HEAVRIER THAN A STOCK BLOCK. AS FAR AS POWER GOES "HECK YEAH" IT WILL MAKE MORE THAN THE BLOCK WILL STAND!!!!!!!

outlawstock17
Dirt Forum Champ
Total posts: 1363
posted March 01, 2004 05:52 AM  
WOW! that sounds like a freak deal. you got off lucky to be able to use everything.......who's the other guy that split the block down the middle?

gangster fords
Dirt Roller

Total posts: 13
posted March 01, 2004 11:33 PM  
im not sure who the other guy was but i for a fact have pulled that one lol dont get me wrong im realy not sure why it did it
best we could figure might have been compression or maybe predetonation which like i said we had alread ran 17 18 nights with no problem ..... i was running it on racing gas and since have changed to alky just to see if it makes a difference..... i'll let you know if it happens again.

superstock16
Dirt Roller

Total posts: 17
posted March 06, 2004 07:37 AM  
Guys, I had a 306 that did the same thing. 400 hp on motor/with a 250 no2 shot, same thing happened, except mine didn't sound like u turned it off. Sounded more like u dropped a box of flouresent lights under the car.And the only thing salvaged was a couple of h beam rods and je pistons and the heads.

dirtracer7
Dirt Freak

Total posts: 337
posted March 08, 2004 09:45 PM  
I been running my 347 this season will be the fourth year on the block and rotating assy.I might be cryin later but its held together good so far.

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