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  #16 (permalink)  
Old 10-13-2006, 11:54 AM
Malibu Nut
 
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One part says GM 24 3876768 GM 24 F298
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  #17 (permalink)  
Old 10-13-2006, 11:59 AM
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That's what he told me....he has done lots of work for me and my dad....he done all the machine work on my 355 and supplied a set of 461 double humps and supplied all new valves, 550 lift springs, heavy duty retainers and locks, 3 angle valve job, milled 'em, and new guides and he only charged $300 for the heads and the all the work!
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  #18 (permalink)  
Old 10-13-2006, 05:50 PM
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Did anyone get a chance to look up those crank numbers
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  #19 (permalink)  
Old 10-13-2006, 08:09 PM
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Its a forged crank like most early chevys.
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  #20 (permalink)  
Old 10-13-2006, 08:27 PM
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here is an idea you may want to think about, if this is a total rebuild, how about a small bore job on the the 283 and make it a 301..... 301 is a fun little hop up with dual quads......... surprising power

we used 265s with an 060 bore for the 301 . This was when the 283 was new stuff, oops my age is showing
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  #21 (permalink)  
Old 10-13-2006, 08:57 PM
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About how much would those pistons run b/c I have heard they were expensive and where can I get them?
Thanks
Shannon
Also if built right what could this 283 run in an 1/8th and still be streetable?
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  #22 (permalink)  
Old 10-14-2006, 08:03 PM
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283

All 283 cranks were forged. They were made that way for strength and only went to cast cranks as a cost saving later after they proved better than hoped for.
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  #23 (permalink)  
Old 10-15-2006, 06:32 AM
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Always remember one thing if you forget every rule of engine building. "There is no replacement for displacement". That been said, to know if you have a forged crank or cast crank, simply stand the crank up on the flywheel end while holding the crank snout. On the first knife journal you will see a parting line from the foundry. Look at this line, if it is thin, say about the size of a pencil lead, then it is a cast crank. If the parting line is thick it is a forged steel crank. As far as the 882 heads are concerned, those heads were the most in use production heads in chevrolet history. There is absolutely nothing special about them. The intake and exhaust runners are very small and do not allow the engine to breath.

283's stroked to a 302 are pretty nasty, my tests show on a dirt track that there was not a single 350, stroked or not that could keep up with it, specially out of the corners. If you have anymore questions let me know at Motorreplacement@aol.com or my personal site wcdvr@aol.com good luck.
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  #24 (permalink)  
Old 10-15-2006, 07:12 AM
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Quote:
Originally Posted by 50 notchback
Always remember one thing if you forget every rule of engine building. "There is no replacement for displacement"....

283's stroked to a 302 are pretty nasty, my tests show on a dirt track that there was not a single 350, stroked or not that could keep up with it, specially out of the corners.
What would account for the apparent discrepancy in your reply?
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  #25 (permalink)  
Old 10-15-2006, 07:56 AM
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And, if the 283 stroked was so "nasty".........why was the 307 such a dud?
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  #26 (permalink)  
Old 10-15-2006, 11:30 AM
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I don't see one thing wrong with a 307 at my graduation last year a buddy of mine drove his dad's '68 Chevelle to school and it had a 307 with mild cam and 4 barrel and it would do a better burnout than my '78 Malibu with a 350 4 bolt main, 274/284 Xtreme Energy Cam, 461 heads, Speed Pro Pistons, Eagle Crank....and on the way back into b/c our school is out of the city limits there is a long straight stretch we raced and off the line how handed my *** to me but after I got mine moving (40MPH) I blew by him...but again I had twice the money in my motor..so maybe 307 aren't junk like people say.
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  #27 (permalink)  
Old 10-15-2006, 11:42 AM
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Also if I am not mistaken making a 283 a 301(302) your just boring it....not changing the stroke.
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  #28 (permalink)  
Old 10-15-2006, 11:53 AM
Stroke or Destroke?
 
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the 283 was a small journal,the 327 was made both in the small and large journal. By using the small journal 327 internals in the 283, you now have a stroked 302, excellent for high rpm at extended periods of time. wcdvr@aol.com
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  #29 (permalink)  
Old 10-15-2006, 11:59 AM
Stroke or Destroke?
 
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Quote:
Originally Posted by onovakind67
What would account for the apparent discrepancy in your reply?
discrepency? what discrepency, after extensive track testing, over 12 1st place trophy's and 22 years building engines in west texas, i am pretty sure knowledge as well as experience beats guessing everyday.
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  #30 (permalink)  
Old 10-15-2006, 12:17 PM
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But the 302 Dz *(302 = 4.000" x 3.00" (Gen.I, 5.7" rod)) thats what it says on Mortec
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