How much heaver is the 351 than the 302?

enyawix · Dec 5, 2006

How much heaver is the 351 than the 302? I am looking at options for a torque monster.

spierce · Dec 5, 2006

A bunch.
It's in the neiborhood of 65lbs +/-10 lbs
it also depends on what year block. the older blocks with a higher nickel content will be a bit heaveir (but not much) and 4 bolt vs 2 bolt mains.

usually it's said that if you go with aluminum heads on a 351 you get a weight very close to a stock 302.

I weighed my short blocks and it was about 75-85 lbs difference if my memory serves correctly.

Modular2v · Dec 5, 2006

aluminum heads on a 302 based stroker the way to go for less front end weight!

FastDriver · Dec 5, 2006

enyawix said:
I am looking at options for a torque monster.

Consider nitrous. There are systems that range from a few hundred dollars to a couple thousand (and even more for the crazy guys). Nitrous adds huge low-end torque when sprayed.

A 351 would definitely be a fun build, though. And if you've got the dough, you'd still always have the option of nitrousing it. Just don't come home crying to mommy when the torque-driven pressure from your spine starts rupturing internal organs.

Chris

85_SS_302_Coupe · Dec 5, 2006

I could be off on this one but i believe it's more like 100lbs, and to come close to 302 weight you need aluminum heads and a tubular K member. Don't worry about weight though unless you're into autocross or road racing. You won't notice 100lbs on the front of your car.

silverstangman · Dec 5, 2006

yeah the weight difference won't even phase you when compared to the additional torque at low rpm's. granted my car is a race car but at about 50mph in high gear, i can hit it and it will get sideways no replacement for displacement.
and granted u can make good power with the 302 but u are limited as far as doing future things to it, like a 347 is pretty much the max without getting a $3k race block. windsor u can start at 351 and go right on up. but really it all depends on what you want to do. i don't think the weight factor should even concern u, believe me once u get behind the wheel of that big old windsor, u will forget all about an additional 50 lbs.

85_SS_302_Coupe · Dec 5, 2006

I just look at 100lbs as superficial....how much does the average passenger weigh? Sure, they're not sitting over top of the front tires, but like i mentioned before that only matters when you're really concerned about weight distribution, and if you're that worried then aluminum heads, a trunk mounted battery and a tubuler K member and A arms will offset the extra weight of the engine.

Hell the typical supercharger and intercooler setup is easily 100lbs.

Boss 351 · Dec 5, 2006

yeah I think you'll forget about the weight once you slap in a 418 stroker in there lol Victor CNC heads, victor intake,

silverstangman · Dec 5, 2006

how bout a pump gas 420 w/ tfs stage 3's hog ported, super victor,950 holley and a zex 250 shot hmmmm....sounds strangely familiar

86bluecobra · Dec 5, 2006

Ok just a few wieghts i got off of FORD RACING web site
392 stroker Z (aluminum) heads 669lbs
347 stroker Z (aluminum) heads 543lbs
5.4L S/C 837lbs
So whats the wieght difference? we are looking at 100lbs. I know that my 351w is one heavy beast. I think it as a shortblock wieghs as much as the 302 laying in my garage as a long block no intake.

65ShelbyClone · Dec 5, 2006

spierce said:
the older blocks with a higher nickel content will be a bit heaveir (but not much) and 4 bolt vs 2 bolt mains.

There was never a 351W with four bolt mains. 351C 4V yes(even then not all of them), but the only Windsor with a four bolt bottom end is the Boss 302.

Look at it this way, the 351W has more iron in a lot of different places. The decks are taller and that's a lot of metal right there. The mains are 3.00" instead of the 302's 2.25. The bottom of the block is wider because of this, that's more iron. The main caps are wider and the crank itself has thos big 3.00" mains and is heavier. The rods are also longer....and heavier.

The weights I was able to find for Ford smallblocks were ~460lbs for an iron-headed 302 and 510-525lbs for a similarly dressed 351W.

Modular2v · Dec 5, 2006

100lbs is a tenth in the 1/4 and not to mention that this extra 100lbs is at the front of the car (which is crucial for launches) All being said and done though i wish i had done a windsor stroker instead of my 331 but im not complaining at all with my setup

86bluecobra · Dec 5, 2006

Yes it is true an extra 100lbs on the nose is not a good thing but the extra torque the 351w generates makes up for it.

Boss 351 · Dec 5, 2006

but a tubular k-member would allow the 351 to sit an inch closer to the rear I know I have the option on my k-member but I don't know what the difference would be with a 351???

86bluecobra · Dec 5, 2006

The difference would be with wieght transfer. If the engine is moved back an inch the wieght is closer to the rear less up front so to speak to pick up. It would make a difference in the first 60 feet of a drag race for sure.

Modular2v · Dec 5, 2006

an inch makes a difference in the launch.....the closer you can get all the weight to the back the better.....or maybe the center of gravity? Im willing to guess my 331 makes more torque than equally modified standard bore/stroke 351.......or thats the way it looks when i compare the two

stangjunkie · Dec 5, 2006

Modular2v said:
an inch makes a difference in the launch.....the closer you can get all the weight to the back the better.....or maybe the center of gravity? Im willing to guess my 331 makes more torque than equally modified standard bore/stroke 351.......or thats the way it looks when i compare the two

normally i agree with every post you make however this one no.... if you make everything else equal (even though you wouldn't) a 351 still pushes more air than you 331.... a true statement would be a stroked HCI 302 beats a stock 351. HOwever equally modded now. if they were equally modded it would be a 393w with an HCI against your 331 and ill take the 393. not to mention you could do a sick 408 or even a 427 if your brave

65ShelbyClone · Dec 5, 2006

A fairer comparison might be between an equally-equipped 347 and 351W.

85_SS_302_Coupe · Dec 5, 2006

I'm surprised you guys are making this big of a deal over 100 pounds! That's NOTHING! Don't ever ride with a passenger because that's probably 150 or more, and don't ever fill your gas tank because that's even more weight! You better stay on skinnies because the average wheel is about 40lbs too.

Hey, a 351W didn't hurt the '95 Cobra R when it was waxing everyone's ass in AIX. I have a buddy who owns one and still runs the original engine.

stangbear427 · Dec 6, 2006

65ShelbyClone said:
There was never a 351W with four bolt mains.

Umm...

FRPP A4
DART Sportsman
DART Iron Eagle
World Products Man O War

There are many options that didn't come out of the Ford Windsor plant for a 351. I can't speak for spierce, but when I read his post I immediately assumed he wasn't suggesting any of the 4 bolt blocks did. And he's right, the 351s with 4 bolt mains are heavier.

How much heaver is the 351 than the 302?

enyawix

Member

spierce

Member

Modular2v

FastDriver

I was uncomfortably high & wearing a helmet

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

silverstangman

New Member

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

Boss 351

Here sthhhhhhhheeeve take a picthh of my man flowe

silverstangman

New Member

86bluecobra

Advanced Member

65ShelbyClone

Modular2v

86bluecobra

Advanced Member

Boss 351

Here sthhhhhhhheeeve take a picthh of my man flowe

86bluecobra

Advanced Member

Modular2v

stangjunkie

New Member

65ShelbyClone

85_SS_302_Coupe

it sucks (I know) to be on the receiving end

stangbear427

Active Member

Similar threads

How much heaver is the 351 than the 302?

Member

Member

I was uncomfortably high & wearing a helmet

it sucks (I know) to be on the receiving end

New Member

it sucks (I know) to be on the receiving end

Here sthhhhhhhheeeve take a picthh of my man flowe

New Member

Advanced Member

Advanced Member

Here sthhhhhhhheeeve take a picthh of my man flowe

Advanced Member

New Member

it sucks (I know) to be on the receiving end

Active Member

Similar threads

Privacy & Transparency

Privacy & Transparency