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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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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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| | | | Joined: Mar 2009 Posts: 124 'Bolter | | 'Bolter Joined: Mar 2009 Posts: 124 | hi,
i'm looking for a new head for my '54 235. an 848 head was recomended. what is the difference between the 848 and the 913? and what are the advantages/disadvantages of either?
if this has been covered before i appologize. i could not find the thread. | | | | | Joined: Aug 2004 Posts: 399 Shop Shark | | Shop Shark Joined: Aug 2004 Posts: 399 | The 848 sports slightly better compression and a better alloy.
Frank | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
7.5:1 in 1954 vs 8.25:1 in 1958
| | | | | Joined: Mar 2009 Posts: 124 'Bolter | | 'Bolter Joined: Mar 2009 Posts: 124 | does the increase in compression require the use of higher octain gas to prevent predetonation?
is the 913 more prone to cracking due to the alloy? | | |
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