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#84615 10/23/2007 4:44 AM | Joined: Feb 2006 Posts: 162 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2006 Posts: 162 | Hey guys. I have a 59 viking 60 that has what I was told is a 350 in it. after running the code stamped on the passenger side front pad (VI226YH) that means its a 1966 or 1967 327 from a C10-C30. From what I understand, The 350 and 327 both have a 4" bore. So to make a 350 out of the engine I have could I just put in a 3.48" stroke 350 crank?
Chris
1956 Chevrolet 4400
1959 Chevrolet Viking 60
1968 Chevrolet el Camino
2002 Chevrolet 1500HD 4x4
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#84616 10/23/2007 5:27 AM | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy glamis4X4, If I remember correctly, the 350 came out in 1968, that engine would have a "large journal" crank, the 1967 and previous years small blocks had smaller rod and main journal diameters. So the largest displacement you can get using stock parts in a 67 and prior block is 327 cu. in.. hope that helps. | | |
#84617 10/23/2007 1:49 PM | Joined: Apr 2005 Posts: 1,971 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,971 | I would look to the casting numbers on the rear of the engine to find out the blocks uses. If it is a 327 or 283, I would rebuild it as needed, or just buy a different "known" 350. | | |
#84618 10/23/2007 6:02 PM | Joined: Feb 2004 Posts: 29,781 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,781 | I don't think the 327 has enough crankcase clearance for the 350 crankshaft to turn properly. The large-journal 327 crank spins freely in a 350 block, but not the other way around. I raced 327's on the dirt track for several years, and we couldn't make a 350 out of one with a crank swap.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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#84619 10/24/2007 9:42 AM | Joined: Jul 2006 Posts: 187 Shop Shark | | Shop Shark Joined: Jul 2006 Posts: 187 | 327 has small rod journals. 350 has large rod journal. 327 revs higher, puts out respectable HP and will probably run longer than a 350. Look up the casting number on mortec.com to be sure of what you have. Casting number is on top rear of drivers side on the block. | | |
#84621 10/24/2007 4:37 PM | Joined: May 2004 Posts: 1,312 'Bolter | | 'Bolter Joined: May 2004 Posts: 1,312 | I believe there were various versions of the 327, including Corvette motors in excess of 300 HP - wouldn't that be sweet !!!. Also, check your heads - if you have the Camel Hump / Double Hump heads they flow pretty well. | | |
#84622 10/24/2007 7:09 PM | Joined: Jul 2006 Posts: 187 Shop Shark | | Shop Shark Joined: Jul 2006 Posts: 187 | It was already stated in this post that not all 327s are small journal cranks. The man said he had a 66 or 67 327, which is a small journal crank. The point was a 327 is capable of making some really good ponies. Mortec is a good, free, on-line source that for the most part is accurate. I don't rely on it like a Bible. I have my Chevrolet by the Numbers books for that. | | |
#84623 10/24/2007 7:59 PM | Joined: Feb 2004 Posts: 29,781 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,781 | If you happen to have a small-journal 327 block and a forged steel 283 crankshaft, you've got the basics of one of the best-performing combinations Chevy ever built, the 302. For a lot of years, us hotrodders bored out 283's to 4" to make a "301" engine. Chevy caught on in 67, put a 3" stroke crank in a 327 block, and called it a "302". They cheated half a cubic inch! (301.46) The Z-28 Camaros got everybody's attention with that engine and its 8,000+ RPM capability!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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#84624 10/24/2007 9:06 PM | Joined: Apr 2005 Posts: 1,971 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,971 | 5wests brought up "Chevrolet by the Numbers" books. They are written by Alan Colvin the editor of Corvette Fever magazine. I would highly recommend them as the best for accurate numbers of heads and blocks. Especially for the "absolute" correct guys out there. | | |
#84625 10/25/2007 1:23 AM | Joined: May 2007 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: May 2007 Posts: 36 | Originally posted by TooMany2count: Originally posted by 5wests:
[b] 327 has small rod journals. 350 has large rod journal. 327 revs higher, puts out respectable HP and will probably run longer than a 350. Look up the casting number on mortec.com to be sure of what you have. Casting number is on top rear of drivers side on the block. Joe, How did you mic the heads to find engine size?Because thay ran the same heads on alot of small blocks.The only differance is cc and valve size and intake runners and exhaust runners.So some one could have put 307 heads on your 327.  | | |
#84626 10/25/2007 2:20 AM | Joined: Feb 2006 Posts: 162 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2006 Posts: 162 | maybe he ment he mic'd the cylenders?
Chris
1956 Chevrolet 4400
1959 Chevrolet Viking 60
1968 Chevrolet el Camino
2002 Chevrolet 1500HD 4x4
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