302 VS 351 weight diffrence

notchrocket · 09-26-2004, 11:05 AM

heres the deal i have an 87 notch that i just put about 5k into the body and suspension and now its time for the drive train. i am considering a 331 with a kenne bell or possibly a 351 based stroker n/a (for now) is the weight diffrence considerable between the 302 and the 351. keep in mind i will be going with a 4 bolt main and this is for serious street strip action. not a daily driver.

jonnyk · 09-26-2004, 01:39 PM

About 100 pounds...give or take.

420nitro · 09-26-2004, 01:56 PM

Minimal!
351 and dont look back.

Rev · 09-26-2004, 02:08 PM

I think at least some of the extra weight is in stronger main bearing webs. For your intended application (power adder, etc.), the minimal extra weight would be an advantage rather than a disadvantage.

Rev

notchrocket · 09-26-2004, 03:11 PM

thanks for the quick replys fellas. i was hoping to get approval on the 351. keep the info coming none the less. if anyone has done this i would appreciate any heads up thoughts and ideas . now the next question what stroke to go for....i cant help but think 408.

Fat0eknee · 09-26-2004, 04:02 PM

5.0L = 460 lbs
351 = 510 lbs

Fat0eknee · 09-26-2004, 04:02 PM

5.0L = 460 lbs
351 = 510 lbs

gmhatr · 09-26-2004, 05:29 PM

351=525lbs http://www.raceabilene.com/kelly/hotrod/engine.html

420nitro · 09-26-2004, 05:57 PM

Mine engine weighed somewhere in the 425-450 pounds shipped. But thats with Alumi. heads and intake.

As goes for what stroke...it's up to you really. You can open up a big debate over that very simple topic.

If your like me and want to keep things as simple as possiable, shift at a normal RPM range (5,600-6,200 rpms) I would go with at least a 408 if not a 418. If your going with a Dart block by ALL MEANS get the "Big Bore" option (4.125) instead of the standard bore (4.0).
4.030 Bore x 4.0 stroke is a 408 and use the 6.250 size rod.
4.125 Bore x 4.0 Stroke is a 427- 8 CI
or
4.030 Bore x 4.100 stroke is a 418
4.125 Bore x 4.100 Stroke is 436+ cubes. (i think)

Use the TFS-R heads out of the Box or a Set of AFR 225 heads out of the box.

Super Victor intake (out of the box)

750-825 Mighty Demon
or
850-950HP Holley

1 7/8 Kook Headers or 2.0 inch

10.5 to 1 compression

HYD roller Cam (Custom and in the 250+ range @.50 & .600 lift range)

Shifting in the 6,000 rpm range

Will net you a 575+ Horsepower, N/A ,Pump Gas Grocery Getter!

Will also set you back in some where around $10,000+ then add another 1,500-2,000 for the Dart Block option if you are considering it.

**remember anything over the 420 cubes will require some more work (porting) to the above list, due to the size of the motor.

Anything less then a 383 CI would most likely Require a Victor JR. intake but need alot of porting.
My .02's

notchrocket · 09-27-2004, 07:37 PM

excellent info i will have to sleep on it but i luv the idea of 575 n/a hp. imagine what a procharger would do for it....not to mention my wallet. thanks for the tech lesson.

nastyn8 · 09-28-2004, 02:33 AM

there is an article on 302 to 351 swap in june 2002 issue of 5.0 mustangs & super fords magazine, with tech support, necessary part, and list of pros and cons

09-26-2004, 11:05 AM	#1
notchrocket Registered Member Join Date: Sep 2004 Location: northern va Posts: 4	302 VS 351 weight diffrence heres the deal i have an 87 notch that i just put about 5k into the body and suspension and now its time for the drive train. i am considering a 331 with a kenne bell or possibly a 351 based stroker n/a (for now) is the weight diffrence considerable between the 302 and the 351. keep in mind i will be going with a 4 bolt main and this is for serious street strip action. not a daily driver.

09-26-2004, 01:39 PM	#2
jonnyk Being stroked is great Join Date: Oct 1998 Location: Alberta, Canada Posts: 772	About 100 pounds...give or take. __________________ Novi 2000 now spinning off the snout of the 331... Mods Pics

09-26-2004, 02:08 PM	#4
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	Stronger I think at least some of the extra weight is in stronger main bearing webs. For your intended application (power adder, etc.), the minimal extra weight would be an advantage rather than a disadvantage. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe Last edited by Rev; 09-26-2004 at 05:07 PM..

09-28-2004, 02:33 AM	#11
nastyn8 Smokes The Dope Join Date: Aug 2004 Location: Eldorado, Illinois Posts: 144	there is an article on 302 to 351 swap in june 2002 issue of 5.0 mustangs & super fords magazine, with tech support, necessary part, and list of pros and cons __________________ 88' coupe with a 2.3, displacement replacement in near future. 46' f1 My page

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
weight reduction on a 94 cobra	mak375	Windsor Power	2	11-21-2003 10:20 AM
88workcar-? reducing weight	Simi Stang	Windsor Power	10	11-08-2002 05:55 PM
Please Comment of Speed Secret # 2	jim_howard_pdx	Windsor Power	20	11-06-2002 11:44 AM
351 Windsor motor weight vs 302 5.0 weight?????	ELBGATOR3	Windsor Power	1	03-12-2001 12:07 AM
Weight and Weight Distribution	97snakedriver	Corner Carvers Delight	4	01-11-2001 12:21 PM

09-26-2004, 01:56 PM	#3
420nitro Registered Member Join Date: Nov 2003 Location: Rockford Posts: 596	Minimal! 351 and dont look back.

09-26-2004, 03:11 PM	#5
notchrocket Registered Member Join Date: Sep 2004 Location: northern va Posts: 4	thanks for the quick replys fellas. i was hoping to get approval on the 351. keep the info coming none the less. if anyone has done this i would appreciate any heads up thoughts and ideas . now the next question what stroke to go for....i cant help but think 408.

09-26-2004, 04:02 PM	#6
Fat0eknee I'm slow ...I know. Join Date: Dec 2003 Location: houston Posts: 518	5.0L = 460 lbs 351 = 510 lbs

09-26-2004, 05:29 PM	#8
gmhatr Registered Member Join Date: May 2004 Location: Mattoon IL. Posts: 91	351=525lbs http://www.raceabilene.com/kelly/hotrod/engine.html

09-26-2004, 05:57 PM	#9
420nitro Registered Member Join Date: Nov 2003 Location: Rockford Posts: 596	Mine engine weighed somewhere in the 425-450 pounds shipped. But thats with Alumi. heads and intake. As goes for what stroke...it's up to you really. You can open up a big debate over that very simple topic. If your like me and want to keep things as simple as possiable, shift at a normal RPM range (5,600-6,200 rpms) I would go with at least a 408 if not a 418. If your going with a Dart block by ALL MEANS get the "Big Bore" option (4.125) instead of the standard bore (4.0). 4.030 Bore x 4.0 stroke is a 408 and use the 6.250 size rod. 4.125 Bore x 4.0 Stroke is a 427- 8 CI or 4.030 Bore x 4.100 stroke is a 418 4.125 Bore x 4.100 Stroke is 436+ cubes. (i think) Use the TFS-R heads out of the Box or a Set of AFR 225 heads out of the box. Super Victor intake (out of the box) 750-825 Mighty Demon or 850-950HP Holley 1 7/8 Kook Headers or 2.0 inch 10.5 to 1 compression HYD roller Cam (Custom and in the 250+ range @.50 & .600 lift range) Shifting in the 6,000 rpm range Will net you a 575+ Horsepower, N/A ,Pump Gas Grocery Getter! Will also set you back in some where around $10,000+ then add another 1,500-2,000 for the Dart Block option if you are considering it. **remember anything over the 420 cubes will require some more work (porting) to the above list, due to the size of the motor. Anything less then a 383 CI would most likely Require a Victor JR. intake but need alot of porting. My .02's

09-27-2004, 07:37 PM	#10
notchrocket Registered Member Join Date: Sep 2004 Location: northern va Posts: 4	excellent info i will have to sleep on it but i luv the idea of 575 n/a hp. imagine what a procharger would do for it....not to mention my wallet. thanks for the tech lesson.