Engine Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**68350** · 03-03-2010, 03:26 PM

Ok, so I just bought a new vehicle and I cannot find anything on the block. The front pad reads F0304C. There is no casting number that I can find. On the passenger side behind the head there is what looks like a tag that say C 34. The heads are 63-65 283 powerpak or 62-64 327 vette(have a build date of 1963). There is an XT on the drivers head and a T on the passenger head, both have a solid triangle that follows. Anyone know what that means on the heads? Anyone know what the engine is and what the C 34 means? thanks

**mr48chev** · 03-03-2010, 03:45 PM

The casting number you are looking for is on the Driver's side behind the left head.

This is on a bare 350 block sitting in my garage but it shows where the casting number you want should be on a small block.

Most likely the 283 Casting number would be one of these

3737739 1957-64 283 170-290 2 220-290hp Corvette's
3756519 1958-62 283 170-315 2 passenger, corvette
3789817 1958-68 283 2
3789935 1961-66 283 only 170-315 2 passenger, corvette
3790721 1962-65 283 170-220 2 Chevy II recessed oil filter boss
3792582 1964-65 283 2
3794226 1958-63 283 170-195 2 passenger
3834810 1964-66 283 195-200 2 passenger, chevelle, truck
3834812 1962-63 283 170-195 2 passenger, commercial trucks
3837739 1958-62 283 2
3849852 1957-66 283 multiple 2 truck, passenger, chevelle
3849935 1965-67 283 2

327 numbers here

Engine Block Codes for CID 327
Casting Years CID HP Main Notes
3782870 1962-67 327 250-375 2 passenger, chevelle, corvette
3789817 1962-67 327 2 truck
3790721 1965-66 327 250-350 2 Chevy II recessed oil filter boss
3791362 1962-67 327 250-350 2 Chevy II recessed oil filter boss
3792563 1965 327 2
3794460 1962-64 327 2
3814660 1968-69 327 2
3830944 1963 327 2
3858174 1964-67 327 275-350 2 passenger, chevelle, corvette, trucks
3858180 1964-67 327 250-375 2 passenger, chevelle, corvette
3892657 1966-67 327 210-350 2 Passenger/Chevelle/Corvette/Camaro
3903352 1967 327 210-350 2 Passenger/Chevelle/Corvette/Camaro
3914660 1968 327 210-300 2 Passenger/Chevelle/Chevy II/Camaro/Corvette
3914678 1968 327 210-350 2 Passenger/Chevelle/Chevy II/Camaro/Corvette
3932386 1969 327 2 ?? Unverified
3956618 1968-69 327 235 2 Passenger
3959512 1962-67 327 2 Was also used for some replacement blocks

**68350** · 03-03-2010, 08:24 PM

there is no casting numbers back there. i degreased the area you posted a picture of earlier before posting in search of it.

**GruntMoanCough** · 03-03-2010, 09:00 PM

My guess is: Flint plant, March 4, 1960 - 283 (170 HP)

There should be a casting number where Mr48 said.

Slow Build · 05-21-2010, 08:28 PM

Quote:

Originally Posted by 68350

there is no casting numbers back there.

That's where mine are. This is why I love digital cameras. Just stick the camera behind the dr side valve cover and face the camera toward bellhousing and click.

03-03-2010, 03:26 PM	#1
68350 Senior Member Join Date: Jan 2002 Location: Williston, ND Posts: 2,999	Engine Help Ok, so I just bought a new vehicle and I cannot find anything on the block. The front pad reads F0304C. There is no casting number that I can find. On the passenger side behind the head there is what looks like a tag that say C 34. The heads are 63-65 283 powerpak or 62-64 327 vette(have a build date of 1963). There is an XT on the drivers head and a T on the passenger head, both have a solid triangle that follows. Anyone know what that means on the heads? Anyone know what the engine is and what the C 34 means? thanks __________________ 68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi

03-03-2010, 03:45 PM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,639	Re: Engine Help The casting number you are looking for is on the Driver's side behind the left head. This is on a bare 350 block sitting in my garage but it shows where the casting number you want should be on a small block. Most likely the 283 Casting number would be one of these 3737739 1957-64 283 170-290 2 220-290hp Corvette's 3756519 1958-62 283 170-315 2 passenger, corvette 3789817 1958-68 283 2 3789935 1961-66 283 only 170-315 2 passenger, corvette 3790721 1962-65 283 170-220 2 Chevy II recessed oil filter boss 3792582 1964-65 283 2 3794226 1958-63 283 170-195 2 passenger 3834810 1964-66 283 195-200 2 passenger, chevelle, truck 3834812 1962-63 283 170-195 2 passenger, commercial trucks 3837739 1958-62 283 2 3849852 1957-66 283 multiple 2 truck, passenger, chevelle 3849935 1965-67 283 2 327 numbers here Engine Block Codes for CID 327 Casting Years CID HP Main Notes 3782870 1962-67 327 250-375 2 passenger, chevelle, corvette 3789817 1962-67 327 2 truck 3790721 1965-66 327 250-350 2 Chevy II recessed oil filter boss 3791362 1962-67 327 250-350 2 Chevy II recessed oil filter boss 3792563 1965 327 2 3794460 1962-64 327 2 3814660 1968-69 327 2 3830944 1963 327 2 3858174 1964-67 327 275-350 2 passenger, chevelle, corvette, trucks 3858180 1964-67 327 250-375 2 passenger, chevelle, corvette 3892657 1966-67 327 210-350 2 Passenger/Chevelle/Corvette/Camaro 3903352 1967 327 210-350 2 Passenger/Chevelle/Corvette/Camaro 3914660 1968 327 210-300 2 Passenger/Chevelle/Chevy II/Camaro/Corvette 3914678 1968 327 210-350 2 Passenger/Chevelle/Chevy II/Camaro/Corvette 3932386 1969 327 2 ?? Unverified 3956618 1968-69 327 235 2 Passenger 3959512 1962-67 327 2 Was also used for some replacement blocks Last edited by mr48chev; 03-03-2010 at 03:50 PM.

03-03-2010, 08:24 PM	#3
68350 Senior Member Join Date: Jan 2002 Location: Williston, ND Posts: 2,999	Re: Engine Help there is no casting numbers back there. i degreased the area you posted a picture of earlier before posting in search of it. __________________ 68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi

03-03-2010, 09:00 PM	#4
GruntMoanCough Registered User Join Date: May 2009 Location: Pemberton, BC Posts: 1,075	Re: Engine Help My guess is: Flint plant, March 4, 1960 - 283 (170 HP) There should be a casting number where Mr48 said. __________________ My goal in life is to be as good a person as my dog already thinks I am - Unknown



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