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Jul 21st, 2025 | | 
#31653 05/23/2004 7:16 PM | Joined: Oct 2003 Posts: 91 Member | | Member Joined: Oct 2003 Posts: 91 | can anyone tell me what this casting # come up as for a sbc
block # 3914678
heads 398882
thanks to who ever answers | | |
#31654 05/23/2004 8:03 PM | Joined: Mar 2001 Posts: 316 Member | | Member Joined: Mar 2001 Posts: 316 |
*** GMC ***
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#31655 05/23/2004 8:09 PM | Joined: Mar 2001 Posts: 316 Member | | Member Joined: Mar 2001 Posts: 316 | '68 Z-28 2 bolt main 302 block
#882's are OK heads, but use the small "peanut" plugs............open chamber type, though.
#993 or #441 is better.....
Your block is probably an "MO" or an MP" block.........not the best "302" blocks for the "z-28"............'69 "DZ" was-is the best, as it has the larger journals, better cam (30-30 Duntov) and the heads had re-developed valve springs for high RPM's........also, z-28 oil pump is heavy duty....will fit ANY SBC.
*** GMC ***
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#31656 05/23/2004 10:19 PM | Joined: Oct 2003 Posts: 91 Member | | Member Joined: Oct 2003 Posts: 91 | do you know what size the valve and cc the heads are and how do you know what kind of block it is and what would the engine be worth | | |
#31657 05/24/2004 3:06 AM | Joined: Mar 2001 Posts: 316 Member | | Member Joined: Mar 2001 Posts: 316 | The 882 heads should be about 72-76cc's, depending on if they have been "shaved" or not......
The block? Hard to say.........not many MO or MP blocks running around........
Are you buying, or selling? Just curious.
*** GMC ***
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#31658 06/03/2004 6:41 AM | Joined: Oct 2003 Posts: 91 Member | | Member Joined: Oct 2003 Posts: 91 | Ok need help again with the codes on the block. Stamped on the front are the following:
781131204 and
V1113HF
I cant seem to figure out what the 3HF means and if the longer number is part of the VIN maybe? Help anyone? | | |
#31659 06/04/2004 6:47 AM | Joined: Nov 2001 Posts: 58 Member | | Member Joined: Nov 2001 Posts: 58 | The V is Flint 11 is Nov and 13 day so Nov 13th I get the HF letters to be:
1965 HF 327 h/p 300 4 Vette
1966 HF 327 Powerglide, A.I.R. 275 4 full size
1969 HF 350 Powerglide 275 2 A F X
1978 HF 350 LM1 170 4 Firebird
The mortec casting number reads:
3914678....302.....68....2...Z-28 Camaro
3914678....327.....68....2
3914678....350.....68....2 | | |
#31660 06/04/2004 6:40 PM | Joined: Oct 2003 Posts: 91 Member | | Member Joined: Oct 2003 Posts: 91 | so what do i have for a engine i know its not a 350 cuz it has a smaller balancer than a 350 so is it a 302 or a 327
block # 3914678
heads 398882
781131204 and
V1113HF | | |
#31661 06/04/2004 9:55 PM | Joined: Nov 2001 Posts: 58 Member | | Member Joined: Nov 2001 Posts: 58 | I wouldn't just rely on the balancer being smaller, a lot of things can be changed good or bad on an engine over 30 plus years. Measure the stroke on the crankshaft or if you can get the crankshaft casting number that should tell you. | | |
#31662 06/04/2004 11:24 PM | Joined: Jul 2000 Posts: 962 Shop Shark | | Shop Shark Joined: Jul 2000 Posts: 962 | chevy 302: 3" stroke
327: 3.25" stroke
350: 3.48" stroke
I think all the 327/350 blocks had a 4" bore. But was '68 or '69 the first year for chevy 350? I know '68 was last year for 327.
chip
Preaching the Hot Rod Gospel according to the 4-stroke apostles:
Suck, Squish, Fire and Fumes
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#31663 06/05/2004 12:05 AM | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | Crankshaft forging #'s:
302: 3727499, 3734627, 3735236, 3815822, 3835236TG, 3836236, 3836266, 3849847, 3876764, 3876768, 6764
3" stroke
327: 2680, 3782680, 3782690, 4577, 5782680
3 1/4" stroke
350: 1182, 1408826, 14088526, 2690, 310514, 3912335, 3932442, 3941182, 3941184
3.48 stroke
All have 4" bore sizes
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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#31664 06/05/2004 12:39 AM | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | "how to rebuild yer smblk chev" book shows that block casting # for a 327, 68-69 vette and other hi perf
Bill | | |
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