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| | | | Joined: May 2009 Posts: 107 Shop Shark | | Shop Shark Joined: May 2009 Posts: 107 | All,
I have a 1957 235 out of a Belair. I was wondering if a newer head would be more beneficital (provide better performance)? If so which year (1961? or do I need older like 1958?) ......
Current setup:
Fenton dual exhaust
Tatersfield dual intake
1937 Zenith carbs
4 spd on the floor
If I need to add more information please let me know......
Take care,
Steven
No one can drive us crazy unless we give them the keys.
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | what is "better performance"?
Bill | | | | | Joined: Jan 2000 Posts: 2,074 'Bolter | | 'Bolter Joined: Jan 2000 Posts: 2,074 | Most recommend the '848' head as smaller comb chambers help bump up compression a bit. Also you can use powerglide intake valves for better breathing. Check out posts over on inliners.org site for lots of tricks. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
If you have an "1957 235 out of a Belair", it has the "848" head, and the engine has hydraulic lifters.
Also, does anyone know if only the Powerglide 235s after 1956 used those "special" valves, or, did all 1956 and later car engines (which all had hydraulic lifters) use those "special" valves?
| | | | | Joined: Jan 2000 Posts: 2,074 'Bolter | | 'Bolter Joined: Jan 2000 Posts: 2,074 | TC, per Chev parts manual only 50-52 pg had the larger 1 15/16" intakes, after that they all use the 1 7/8". Do know the larger ones can be installed in all 235 heads, just getting difficult to find. | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Jim is close. It is not only the 1950-52 Power Glide engine that used the 1 15/16" intake valves but the 1950-52 big truck 235's also used them.
These valves show up on ebay all the time.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: May 2009 Posts: 107 Shop Shark | | Shop Shark Joined: May 2009 Posts: 107 | I guess 'better performance' is relative. I was just wondering if going to a newer head, 58,59,60,61??? would make any difference in overall fuel milage, power etc..... I saw a 58 for 60.00 on here and my first thought was parts and then ......
Take care,
Steven
No one can drive us crazy unless we give them the keys.
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