think I found a 383...
 

just ran across a 3970010 block..."350" it has an externially balenced harmonic balencer and flywheel it has camel hump 291 heads...performer intake..its on a stand and i believe it has a huge cam, by how far the valves compress...going to ask the guy if i can pull the heads, to check bore and stroke..guess i could pull the oil pan instead...oh yea..its 400 bucks..i figure the heads are worth that..let me know what u think.

thanks
Jim

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67 lwb fleetside...first hotrod in 25 years...283..186 bowl ported heads..270h comp cam 600 1405...stealth intake..HEI..th350 with 2500 rpm stall..4:10 POSI
god I love to go fast

pop the pan,& look for a balance large balance hole drilled in #1 rod journal........400 sb only (crank)....69 longhorn.

Just go get the thing. THEN figure what you have. You know it's not a 307 or a 305, so go get it. You can't go wrong if you know the sum of the parts.

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'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
Need to pick up the one ton Longhorn with a PONTIAC 350/350soon.
Thanks every one!:)
Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

im gun shy after the boat anchor one...lol..the guy said i can pull the heads and oil pan no prob tomorrow...ofcourse i'll get it..if it aint all screwed up...had a nice shinny new paint job on it....that always scares me...lol