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#48303 07/27/2006 3:03 AM | Joined: Aug 2001 Posts: 79 'Bolter | | 'Bolter Joined: Aug 2001 Posts: 79 | Ok... I recently purchased a 68 Chevy C20 with what he claimed had a 327 in it.... I ran the number that was stamped on the engine (V0725GF). Turns out that its either a 1955 265, a 1957 283 or a 1965 283.. My guess is that its a 1965 283 because it has side mounts and not front mounts.. Dissappointing to say the least. Regardless, I now have a 283. My question is... how can I find out if this is a 4 bolt main other than getting the casting number or popping the pan off. I guy from work who used to dirt track with 283s said that there was a boss cast in the front of the motor on 283s with 4 bolt mains. This true? If so, where is it suppose to be? Thanks for your help. | | |
#48304 07/27/2006 4:34 AM | Joined: Aug 2005 Posts: 424 Shop Shark | | Shop Shark Joined: Aug 2005 Posts: 424 | I have no idea about a boss cast on the 283 4-bolt blocks but if you have a casting number it will tell you what years that particular casting was manufactured as well as whether it is 2-bolt or 4-bolt block. | | |
#48305 07/27/2006 4:40 AM | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy guys, I have never heard of or seen a 4 bolt main 283 in my life, so I'd be very suprised to learn there is such a thing. | | |
#48306 07/27/2006 5:01 AM | Joined: May 2006 Posts: 1 Junior Member | | Junior Member Joined: May 2006 Posts: 1 | The guy from your work has probably got some facts confused. Anyway, no such animal as a four bolt 283. The four bolt SBC blocks were designed for engines that produced relatively high torque and HP. Therefore not necessary in a 283. hahaha
All kidding aside, as designed, the little mouse motors weren't prone to twisting the block and pukin' the crankshafts out. So, four bolt caps weren't really necessary. | | |
#48307 07/27/2006 11:49 PM | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Ditto-no such critter as a 4 bolt main 283. Only the 350, early 400, and '68-'69 302 ahd 4-bolt mains. There is a difference in the block casting for 4-bolt engines, the webs between the cylinders are thicker. Not all engines with the thicker webs are 4-bolt, however. They did build 2-bolt versions of those blocks, mainly for light truck use. They can be machined to accept them, though.
Bill Burmeister
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#48308 07/28/2006 2:31 AM | Joined: Aug 2001 Posts: 79 'Bolter | | 'Bolter Joined: Aug 2001 Posts: 79 | Well thanks for the info... I'll let you know what the casting number is when I find it.. | | |
#48309 08/03/2006 4:32 AM | Joined: Aug 2005 Posts: 424 Shop Shark | | Shop Shark Joined: Aug 2005 Posts: 424 | Hmmmmm...I've never considered it. That's why I've never seen a 4-bolt 283 block. They don't exist!! | | |
#48310 08/06/2006 5:38 AM | Joined: Oct 2002 Posts: 42 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 42 | Old Gold....
Yopu in THE Fallbrook CA as in Avocado Capital of the World?
'50 Chevy 1 ton dually daily driver, 1960 Ford F-100, 1972 GMC C-20, 1958 Kenworth, Cat D4, 1972 Ford F100 Ranger
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#48311 08/06/2006 4:42 PM | Joined: Aug 2005 Posts: 424 Shop Shark | | Shop Shark Joined: Aug 2005 Posts: 424 | That's the one Boom. I grew up in Bonsall. There are 3 or 4 of us "stovebolters" that live here in Fallbrook, although I've never met any of the other folks in person yet. | | |
#48312 08/09/2006 3:18 AM | Joined: Oct 2002 Posts: 42 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2002 Posts: 42 | Good stuff. Friday's we usually head into Fallbrook for hot summer nights. Always amazed at the cars you find up in them avocado groves :-)
'50 Chevy 1 ton dually daily driver, 1960 Ford F-100, 1972 GMC C-20, 1958 Kenworth, Cat D4, 1972 Ford F100 Ranger
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#48313 08/10/2006 9:30 PM | Joined: May 2006 Posts: 63 Member | | Member Joined: May 2006 Posts: 63 | If the 283 is not to your liking - post it on ebay or the like. Lotta folks out there that would LOVE to get their hands on a good running 283. | | |
#48314 08/25/2006 6:08 PM | Joined: Jul 2006 Posts: 12 Junior Member | | Junior Member Joined: Jul 2006 Posts: 12 | Why the disappointment in the 283? It's one of the best small blocks ever made. 3" stroke helps in mechanical wear and with the right tranny you can get 250 HP. I think it's better than the 327.
UGLY 1965 C20 "it ain't supposed to be purty" | | |
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