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Speaking of head numbers ? ? ?
Posted by: American Mel ()
Date: January 30, 2018 07:44PM

What is up with Clark's head numbers lists?

1965-66.....140.....3856727, 3856728, 3878565, 3878570,
(no smog)...........3883861, 3883864, 3883820

1966-69.....140.....3856728, 3885165, 3878570
(smog)

A smog head has NO, Nada, Zero, Zilch, quench area.
Correct?

.
-----------------------------------------------
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater



Edited 1 time(s). Last edit at 01/30/2018 07:46PM by American Mel.

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Re: Speaking of head numbers ? ? ?
Posted by: American Mel ()
Date: January 30, 2018 09:27PM

Okay, so one knowledgeable member has been kind enough to correct my ignorance on 140 quench area.
Yes, 140 smog heads do have a "squish" area.
So, If Clark's lists the same part numbers as smog, & non-smog.
And 140 smog heads have a "squish", then just what is the real difference between 140 smog heads, and 140 non-smog heads?

I have "searched" both here and outside of CCF, and have not found an answer.
I understand that it has been discussed "many times here", but?
Probably not wording my search correctly?

.
-----------------------------------------------
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater

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Re: Speaking of head numbers ? ? ?
Posted by: MattNall ()
Date: January 30, 2018 10:14PM

No Difference! per Bob Helt.... only110's got the open chamber heads with Domed pistons...

140' just got the A.I.R. system [ all external ] IIRC!





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..............................110-PG.................................................Webered-Turbo

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Re: Speaking of head numbers ? ? ?
Posted by: Chilly Willy ()
Date: January 30, 2018 10:28PM

One difference is the exhaust tubes are stainless.




The Corvair, Keeping Nader Notorious winking smiley


Will
Northern California

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Re: Speaking of head numbers ? ? ?
Posted by: Wagon Master ()
Date: January 31, 2018 05:54AM

Never understood why 65 heads were grouped in with 66-69 heads either. The top shroud bolt sizes are different. Yeah everything else will be correct but if you have A/C that can be an issue. Seems like they made more 65 140 heads than the other 3.5 years combined.

'29 Ford Model A Tudor
'61 700 Lakewood 110 4 speed
'69 Monza Convert. 140 Auto.
'70 Dodge Challenger R/T 440 4 speed

Been aircooled since 1973
Northwest Ohio

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