|
427/428 crankshaft ?
Hi, cleaning up the cobra i bought a few weeks ago and noticed that the motor has the cast counter weight behind the balancer, would this indicate the cranshaft in this motor is a 428 flavor or could it still be a 427 crank with maybe the scj rod package , any info or thoughts would be great
thanks Bob |
428, My understanding is that the 427's were internally balanced.
|
428 SCJ crank spacer to be more specific. Stock those used the LeMans rods and the 1UA SCJ crankshaft. See component ID section at Mustang 428 Cobra Jet Registry
|
Are you sure it's a 427?
|
Bob,
it is possible to have the 428 crank in a 427 block it was how to make a stroker before the aftermarket cranks were avail. if the block is a crossbolted 427 then it would have the 428 crank, balancer, flywheel\flexplate, 428 rods. the pistons were custom specifically for that crank-bore combo, 454 cubic inches could easily be achieved with factory parts. but on the other hand it could be just a 428.......you will need to get some block casting numbers to be sure and check for crossbolts on the block skirt. fred |
The only way to be certain of anything after almost 50 years is to measure the bore and stroke.
Measuring the bore might present a problem without removing the heads, but you should be able to measure the stroke through the sparkplug holes if it really really concerns you. If it's running and performing to your satisfaction, I 'd leave it alone and not worry about it until something breaks and needs fixing/replacing. What were you told the displacement was when you bought it? If you convert to efi and need to set parameters that might be an important number to know. |
Hi, took a peek under the car tonight and spotted the crossbolts at the base of the block and the 3 pipe plugs on the left bank with a slight bulge so i would say i have 428 crank in the side oiler block unless i am missing something.
thanks for all the help regards Bob |
Nevermind......misread your post that you saw the pipe plugs in the bulge. Yep would be a S/O.
Cool find and enjoy the new ride! |
| All times are GMT -7. The time now is 09:06 AM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: