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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#55762 01/30/2006 6:48 PM | Joined: Nov 2005 Posts: 30 Apprentice | | Apprentice Joined: Nov 2005 Posts: 30 | Hi All, I have just finished rebuilding my 270 for my '52 5-window LB 1/2, and a friend thinks I have the wrong crank & flywheel. Mine has 4 bolts, and no bolt to retain the balancer. He thinks all 270s had a 6-bolt setup. I see from the spec sheet that the 270 stroke is 5/16" longer than the 228/248, and my wedge top pistons did reach the top of the bore when I put them in. It looks to me like I have a 4-bolt 270 crank, and I hope I'm right! (and scared I'm not!) Any thoughts? Thanks, tom :confused: | | |
#55763 01/30/2006 8:48 PM | Joined: Mar 2005 Posts: 637 Shop Shark | | Shop Shark Joined: Mar 2005 Posts: 637 | My 270 was a 4 bolt, used the flywheel and bell housing from the 216 everything fit fine. | | |
#55764 01/31/2006 9:52 AM | Joined: Jul 2005 Posts: 71 Member | | Member Joined: Jul 2005 Posts: 71 | Tom
My 270 & all those I've worked on (WW2 models), have had 4x bolts.270's were made until 1962 and the later versions were higher powered - maybe some of these had 6 bolts.
The piston wedges do protrude up above the block. | | |
#55765 01/31/2006 8:14 PM | Joined: Nov 2005 Posts: 30 Apprentice | | Apprentice Joined: Nov 2005 Posts: 30 | Thanks guys, I'll put my wig back on...  | | |
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