Rat Rods Rule / Undead Sleds - Hot Rods, Rat Rods, Beaters & Bikes... since 2007!

Go Back   Rat Rods Rule / Undead Sleds - Hot Rods, Rat Rods, Beaters & Bikes... since 2007! > Engine Q&A!

Engine Q&A! The spot for engine talk, Q&A & tall tales!

Thread Tools Display Modes
Old 03-14-2017, 09:11 AM
sneakysnake's Avatar
sneakysnake sneakysnake is offline
"There’s nothing new in originality"
Join Date: Dec 2009
Location: Oklahoma
Posts: 2,601
Default Flat cam

Whats the worst cam you've seen?I bought this short block 350 4 bolt main motor some years back. Guy said it had bad heads.When I finally tore it down I found this,I'd heard stories of cams going flat but never had one.Two of the lobes are wore smooth down.Rest of the motor seems fine, no ring groove, rods and mains look good.

Attached Images
File Type: jpg 20170117_171425.jpg (70.5 KB, 44 views)
File Type: jpg 20170117_171439.jpg (76.6 KB, 43 views)
File Type: jpg 20170117_171457.jpg (35.3 KB, 45 views)
'46 Build Link

'53 Build Link

"Its a catastrophic success"
Reply With Quote
Old 03-14-2017, 11:48 AM
fuzz's Avatar
fuzz fuzz is offline
Livin' the rat roddin' lifestyle
Join Date: Sep 2007
Location: Victoria Virginia
Posts: 1,397

That's pretty bad. Must have used a good filter if the crank isn't scratched from all that metal...
The funniest thing about my signature is that by the time you realize it doesn't say anything it's too late to stop reading it!!...

God bless our troops, especially the snipers

Always be sincere, even if you don't mean it.
Reply With Quote
Old 03-14-2017, 01:39 PM
skull's Avatar
skull skull is offline
''SARCASM: just one of his many talents.''
Join Date: Apr 2009
Location: wet side, washington state
Posts: 5,603
Default 283

l had a 1966 6hevelle we bought in 1976 with the stock SBC 283, in the 199O's it started running rough so we tore it down, the cam that came out looked like that one in the picture and it came out in 3 pieces, funny thing the motor started and ran 0K, but it was filthy inside, but the nearest we could figure there was about 25O,OOO miles on the thing, the previous owner turned the odometer over once, we put a ton of miles on the poor thing. the lifters dished and were so messed up they had to be "gently" removed from the crank side with a hammer.

my opinion only, valid where prohibited, for official abuse only.

1928 maxwell hybrid build/drag car

1948 dodge truck in deceased son's memory.

1930 2dr mopar.
Reply With Quote
Old 03-14-2017, 05:48 PM
smallfoot's Avatar
smallfoot smallfoot is offline
He's rockin' the "Nuttin Special"!
Join Date: Nov 2013
Location: Flawda Flats
Posts: 5,435

Another one of those reasons some of us are fond of chebby stuff...you can beat em bad and they'll still run...
Reply With Quote
Old 03-14-2017, 06:33 PM
Dr Crankenstein's Avatar
Dr Crankenstein Dr Crankenstein is offline
Rocket Surgeon
Join Date: Mar 2011
Location: SK CAN
Posts: 5,412

Gives new meaning to the term, "zero lash".

305's from the early-mid '80's were bad for "soft" cams... swapped a few of 'em... "lobes" were round as round can be...

- The distinction between psychological illness and creative thinking is wafer thin -

1937 Chevy Coupe
1938 Chevy Sedan
Reply With Quote
Old 03-14-2017, 08:33 PM
Tripper's Avatar
Tripper Tripper is offline
Older and more rusted every day!
Join Date: May 2007
Location: Central Tejas
Posts: 12,067

I've flattened a few in my time & always go roller now! Never flattened a roller cam (yet)!

Rust... Mother Nature's paint job... don't fool with Mother Nature!

RRR on Facebook
RRR on Twitter
Wanted: Ratty '35 Olds coupe!
Reply With Quote
Old 03-14-2017, 10:57 PM
Old Iron's Avatar
Old Iron Old Iron is offline
Rusty Rat Rodder
Join Date: May 2011
Location: Willard Mo.
Posts: 11,013

Other than the zinc being removed from the oil, the lifter bores are not square with the center line of the cam.
You can have the lifter bores honed out square to the cam, use Ford lifters and eliminate that problem.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -5. The time now is 06:12 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Rat Rods Rule Inc.