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Joined: Jul 2016
Posts: 13
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Joined: Jul 2016
Posts: 13 |
Have a '68 350 coupe that has numbers match rebuilt 350 with 2 Sp P-glide. Car was originally a 350 2 Bbl, when engine rebuilt, converted to 4 Bbl with new intake manifold. Have original intake and carb with air cleaner cover. Looking for opinions on whether to convert back to original 2 Bbl, to be consistent with how the car was originally built or enjoy the benefits of the 4Bbl?
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Joined: Jan 2002
Posts: 7,719
Power Member
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Power Member
Joined: Jan 2002
Posts: 7,719 |
If you are concerned about originality yourself and/or resale value if you plan to unload the car in the foreseeable future, then I would consider keeping all the correct parts to return it to the factory state right where they are. Then you could either sell them with the car or install them right before selling.
Because I would just keep enjoying the benefits of those secondaries opening up when I drive it.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement
2006 Mustang V6 Pony, Vista Blue. Factory ordered.
2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it)
Old projects, gone but not forgotten:
1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it.
1980 Turbo Trans Am
1970 Mustang fastback, 351C 4Bbl, auto
1988 Mustang GT, 5 speed
1983 F-150 4x4, built 302
1994 Chevy K2500 HD 4x4, 454 TBI
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Joined: Jan 2009
Posts: 3,049 Likes: 10
Senior Member
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Senior Member
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Keep it the way it is, just hang on to the original parts.
Mine was born a 350 2bbl, the drivability is night and day in comparison with a factory 4bbl intake and Qjet.
Those #17 heads, sometimes referred to as "2bbl heads" flow really well on the intake side with a stock valve train, and have no problem taking whatever the Qjet wants to give the motor.
Last edited by Dr. Drivability; 09/16/16 03:54 PM.
-Jeff
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Joined: Dec 2005
Posts: 5,108
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Power Member
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And you will get better fuel milage vs the 2bl...when not mash'n the pedal to the floor any how lol.
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Joined: Jul 2016
Posts: 13
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Thanks, I was hoping that was the prevailing opinion.
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Joined: Nov 2016
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New Member
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New Member
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I'm looking for some #18 heads to replace my 17s. I'm wanting to get some more compression. These bring the stock 350 to around 10-1. Will 2.11 valve heads fit the 350 without hitting the block?
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Joined: Aug 2005
Posts: 1,923
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Depends on how much lift you have from the cam you may need to eyebrow the cylinder edge.
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Joined: Aug 2002
Posts: 7,495 Likes: 1
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Premium Member
Joined: Aug 2002
Posts: 7,495 Likes: 1 |
Some of the 350 blocks came with that champhere'd edge at the top of the cylinders to make room for the bigger valve heads. Some didn't. 10:1 is dangerous territory for iron headed engines unless you intend on running 110 octane at $8 a gallon all the time.
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