NASCAR 366 ?

NASCAR 366 ?

Joined: December 23rd, 2004, 3:26 pm

January 6th, 2012, 12:02 am #1

Just finnished reading the Motor Trend 71 article on the wiki. How did they get 366? .060 over doesnt get 366 so a little stroke? Maybe it was a stroked 352? Too heavy.
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Joined: October 1st, 2004, 8:05 pm

January 6th, 2012, 12:28 am #2

Ford experimented with the 351C using both 4.000" bore x 3.65" stroke or 4.080" bore x 3.5" stroke

It obviously takes a thick wall block to go the second route. Experimental thick wall blocks were around.

Bud Moore returned to NASCAR racing, using 351C power, in the 1972 season

The hood of his car read 351 C.I. so I'm not sure if it was stock displacement or 366 cubic inches.

The 366 rule didn't last long, NASCAR downsized it to 358 in 1974 and its been 358 ever since.

-G
____________________________________________________________

Pantera Photos | 351C Historic Information | 351C Technical Information

If you use a 351C 4V powered vehicle for a grocery getter ... the eggs aren't going to make it home!
Last edited by gpence on January 6th, 2012, 12:31 am, edited 1 time in total.
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Joined: December 23rd, 2004, 3:26 pm

January 6th, 2012, 12:38 am #3

I bet that 4 x 3.65 would pull hard.
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Joined: January 1st, 1970, 12:00 am

January 6th, 2012, 4:10 am #4

page 66!

http://books.google.com/books?id=m9cDAA ... &q&f=false

for you guys that hang out on the tube amp forum scroll down to page 72!!

Happy New Year 2012!!..
Last edited by blizzardND on January 6th, 2012, 4:35 am, edited 1 time in total.
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Joined: July 26th, 2002, 1:52 am

January 6th, 2012, 6:45 pm #5

I bet that 4 x 3.65 would pull hard.
this and the 4.08 x 3.5 were the two combos ford tried .

its a good thing they had the cleveland because the boss 429 only ran for a short period of time and its development consumed a great deal of money . they beefed up the bottom end until nothing could break it but then it took them 500 miles to get up to speed ! by then the race was over

that's why they use 29 cranks in the boss 500 doesn't matter what it weighs nitro will get it spun up .

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Joined: January 1st, 1970, 12:00 am

January 6th, 2012, 9:55 pm #6

He explains the evolution of the Na$car 366 from the destoked 429's to the '74 358 rule change (which was a Chevy thing 'cuz they couldn't over bore a chebby .080)

They started with a order of 50 blocks SK-46362, as thick wall 466 blocks in July 1969so that they could be bored like Joe's 4.080 they were cast with Fords AC grade cast iron with 5% additional nickel which increased strength but made machining slower and hard on tooling. they also had thicker main caps made from SAE-D5506 Nodular Iron.


He mentioned that the 1971 BOSS 351 Mustang was to be a BOSS 366, until Na$car said that the Ford wouldn't have to build 500 engine/cars to qualify. DAMMIT!

He explains the two orders of 100 XE -192540 blocks in '75 as well as the second order of 500 in March '82 and then the final order of 500 SVO blocks in later '82 which 300 were rejected and sent back to Australia due to core shift problems.

I'm not that great a paraphrasing, and I'd rather not scan and post a current book. But if you really have an interest in this buy the book, read it and then help the others out by relating what you read.

happy reading.. I wish I could get a cut of the sales!
-blizz

Happy New Year 2012!!..
Last edited by blizzardND on January 6th, 2012, 10:37 pm, edited 1 time in total.
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Joined: July 26th, 2002, 1:52 am

January 7th, 2012, 2:28 am #7

sk-46362 was a block assembly using the 46363 dry deck block "for 366 CID RX-452-1-2" Gelgota signed off between 7-11 and 7-18-69 on that one that block (46363) was actually 46250 which was "O.S.A. DOAE-6015-H except revised as shown " Gelgota 5-19-69



mine was not bored 4.08 it was bored 4.02


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