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#1 |
Registered User
Join Date: May 2008
Location: Mtn. Grove Mo.
Posts: 155
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quick question
a guy i work with has an 67 or 68 GMC 6500 dump truck parked in a field. He just got the place from his grandfather and there is so much juck setting around. So any way my question is, the truck has a big block in it. and is there a way to tell what size the engine is? it turns freely has antifreeze in it and the oil looks good. ran when parked there but i havent tried to start. im going to take a chance and bring it home if its like a 396 or 427, is there a way to tell. i know on a SBC the casting numbers behind the left head on the block but i've never messed with a big block. the truck itself is trashed cab by the windshield is rusted in pieces. but the windshield is perfect. but anyway the any help with my question would be great. thanks everyone
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DJ |
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#2 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: quick question
If you can see the engine pad on the right front of the engine write down the suffix code and the engine can be identified from the code.
If the engine is a "tall deck" engine you may not want it. Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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#3 |
Registered User
Join Date: May 2008
Location: Mtn. Grove Mo.
Posts: 155
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Re: quick question
I got some pics. of the truck and engine. if that would help. not the best they're off my cell phone. why wouldnt i want a "tall deck", and where exactly is the engine pad? my plans are to drop it down in the front of my 68 chevy with my saginaw 4 speed behind it. truck was originally a 283 3 speed truck.
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#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: quick question
that would be a 366 or 427 tall deck. IMO, not worth the trouble or expense. If it is a 427, the steel crank is worth a few bucks... but otherwise, either of those engines would be slow reving low RPM now HP engines.
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#5 |
Registered User
Join Date: May 2008
Location: Mtn. Grove Mo.
Posts: 155
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Re: quick question
i can get the motor for like 50 or 75 bucks. still not worth it?
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#6 |
I am a Referee of life.
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,993
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Re: quick question
Not unless you need a boat anchor.
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The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" |
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#7 | |
Prostreet 72
Join Date: Oct 2008
Location: Goodrich, Michigan
Posts: 278
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Re: quick question
Quote:
For what you are doing, you can input the 396 or 427 data to figure out what you have. Or simply throw a calliper on the bore and do some surfing on hte net under 427 bore and stroke. |
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#8 |
Registered User
Join Date: Dec 2004
Location: Northern AZ
Posts: 7,271
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Re: quick question
What, a tall deck 427 isn't worth it?? Are you guys kidding?? In stock form, yes a pig, but it obviously needs a rebuild, and with a tall deck block he can add a stroker crank with zero clearance issues, get a stoker assembly with crank, rods and pistons, then he'll have a near 500 ci BBC, now again why is a tall deck 427 not worth $50?? Heck, tell me where it is I'll buy it!
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#9 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: quick question
well, it's almost worth 50 bones in scrap value alone, even with the lower scrap prices.
Stroking a tall deck and building them up... doesn't that end up being close to the cost of a 502? I've always heard it takes a butt load of money to make one. |
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#10 | |
Senior Member
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Location: Cedar Park, Texas
Posts: 7,500
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Re: quick question
Quote:
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#11 |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,500
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Re: quick question
I think the issue with the tall deck motors was the heavy stock pistons due to an extra (4th) ring (?)
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#12 |
Registered User
Join Date: May 2007
Location: Buffalo MN
Posts: 606
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Re: quick question
everthing can be machined id pick it up if it was a 366 or 427 talldeck
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Trial and Error, its expensive but its a mistake i most likely wont make again 1971 chevy k10 custom deluxe http://67-72chevytrucks.com/vboard/s...d.php?t=341257 1968 chevy k/10 fleet http://67-72chevytrucks.com/vboard/s...d.php?t=334731 1948 desoto custom coupe fluid drive(family heirloom) |
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#13 |
Registered User
Join Date: May 2008
Location: Mtn. Grove Mo.
Posts: 155
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Re: quick question
thanks for all the help. the goods and mostly the bads. it dont look like im going to be getting it anyway. he wont part with the motor without selling the whole truck and the wife says no. shes probably right nothing left of the truck that rust hasnt ate away. i mean even the doors are held on with barn door hinges welled to the outside. even the windshield pillar is rusted in two pieces. but it does run and move. thanks again for the advice
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