71 XLT 390

XLT · Post by **XLT** » Thu Mar 22, 2007 7:39 pm

It is now a 390. Was a 360. What am I getting?

March 22, 2007

ToughOldFord · Post by **ToughOldFord** » Thu Mar 22, 2007 7:41 pm

XLT · Post by **XLT** » Thu Mar 22, 2007 8:03 pm

http://www.edelbrock.com/automotive_new ... main.shtml

http://www.edelbrock.com/automotive_new ... rmer.shtml

kid · Post by **kid** » Thu Mar 22, 2007 9:32 pm

Look at that webbing. What is the casting number on that block if you don't mind.

68F250 · Post by **68F250** » Thu Mar 22, 2007 9:36 pm

Yeah it's got the crossbolt nubs.

kid · Post by **kid** » Thu Mar 22, 2007 9:48 pm

Borderline 500 plus cube stroker sitting there.

Brett6269 · Post by **Brett6269** » Fri Mar 23, 2007 10:20 pm

Cool i can smell the burning rubber!!!

fordman · Post by **fordman** » Fri Mar 23, 2007 11:10 pm

what are you guys seeing that i am missing. every fe i have ever seen looks just like that.

kid · Post by **kid** » Fri Mar 23, 2007 11:31 pm

There are little nibs that point straight at the bolt head area of the main caps. On 427 Side oilers that is where the side main cap supports were placed. The cap had a threaded hole in a boss on each side the block had a hole bored in from the outside through the nibs and a space is place between the two and then a bolt through to hold the main girdle tightly in place in those motors.

A little bit of history on those blocks. In 1966 427s were factory rated at 425 horses. A stock 66 fairlane went 10.21 in the quarter with that engine. Made the record books in stock class. That requires over 550 horses to do that. The side oiler 427 pulled 90% of it's power in the 1st 10 degrees of throttle opening that year at Le Mans in 1967 the Side Oiler was outlawed at LeMans so they used the SOHC version instead LOL and won again.

What is most important about that block is its sheer horsepower potential due to the side bolts when made into a stroker. Other companies made girdles that fit over other engine main caps in an attempt to get the strength of that block. Fuelers used them with 4.3 steel cylinders and 5 inch cranks for 580 cid motors.

I can't quit drooling

Sorry for going off the deep end but I have been trying to find one of those for years. My last large stroker used one and the bottom never failed.

XLT · Post by **XLT** » Wed Mar 28, 2007 7:55 pm

kid wrote:Look at that webbing. What is the casting number on that block if you don't mind.

The casting number is C5AE

What is webbing?

kid · Post by **kid** » Wed Mar 28, 2007 9:13 pm

Webbing is the thin areas of metal that come down from the bottom of the cylinders main bearing area called a girdle. All FEs have this webbing but some have more and that engine is 3 machining steps from being a cross bolt racer. That block is from a Top oiler 427 Galaxie. If it had the holes and machine work done it would be a side oiler 427 and the oil would get to the mains and rods through hollow bolts on one side of the main caps to block bolt.

The top two circles show the bosses or nibs that led me to look at the webbing in the other boxes.

mljjones67 · Post by **mljjones67** » Wed Mar 28, 2007 9:17 pm

SO I am guessing these blocks are pretty rare??

kid · Post by **kid** » Wed Mar 28, 2007 9:28 pm

Very rare Though now being revived at a premium.

Post by **DuckRyder** » Thu Mar 29, 2007 6:42 am

About the 5th picture down on this page shows the webbing pretty well.

http://www.428cobrajet.com/id-block.html

XLT · Post by **XLT** » Thu Mar 29, 2007 5:48 pm

What is the purpose of webbing. Does it circle inside the girdle?

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