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11-06-2018, 05:47 PM
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#1 |
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Senior Member
 Join Date: Oct 2013
Location: lousiville Ky
Posts: 2,637
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283 cylinder bore clearanced for cast crank photo
Looking for a photo that shows the bottom of 283 cylinders that was clearance by factory, when they started using cast crankshafts. Need to check my model year 64’ block. My understanding is all 283 blocks were machined this was once implemented. The cast cranks have larger throws requiring this.
Thanks, Les |
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11-06-2018, 06:07 PM
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#2 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: 283 cylinder bore clearanced for cast crank photo
I dont have the pics, but here goes....the early 283,s, had a flat spot in the block @the bottom of the bores. There was a half moon cut or cast into the bottom in the later yrs. I want to say 64 or 65, on the yr but its been a while! The good blocks would accept a 327 crank, & many would bore .125 over, to make a 327. Longhorn
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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11-07-2018, 02:55 AM
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#3 |
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Senior Member
Join Date: Oct 2013
Location: lousiville Ky
Posts: 2,637
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Re: 283 cylinder bore clearanced for cast crank photo
CL,
Thanks for the information. Les |
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11-09-2018, 05:26 PM
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#4 |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: 283 cylinder bore clearanced for cast crank photo
BTT, for anybody with Pics.....Longhorn
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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11-14-2018, 06:59 PM
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#5 |
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Senior Member
 
Join Date: Dec 2011
Location: Moraga, CA
Posts: 799
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Re: 283 cylinder bore clearanced for cast crank photo
Not sure if this will show up, but David Vizard's classic book covers some discussion, but I think a lot of it was about the 327 and requirements for clearing the longer stroke:
https://books.google.com/books?id=G2...0crank&f=false
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(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1 http://67-72chevytrucks.com/vboard/s...d.php?t=567340 |
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11-14-2018, 07:32 PM
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#6 | |
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Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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Re: 283 cylinder bore clearanced for cast crank photo
Quote:
 ....Crazyl
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69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears.... |
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