1970 Insulator Plate
Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
1970 Insulator Plate
Guys...what was the purpose of this on the California bound cars in 1970:
http://www.parts123.com/parts123/yb....Z5Z5Z50000050G
Assist with keeping fuel cooler? Was this an emissions addition?
http://www.parts123.com/parts123/yb....Z5Z5Z50000050G
Assist with keeping fuel cooler? Was this an emissions addition?
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
No idea why they list this as a "California" part. It was available over the parts counter at dealers- in models for the Q-jet and Holley. I've got the Holley version on Ol' Red. The idea is it helps get rid of some of the heat to the carb.
Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
Thanks...were you able to retain your stock hard fuel line to carb without a mod (if you still are using it of course)...and does it work?
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
The original line was for the 3x2's on a L-89, but that's long gone. The line that was on there when I got it came off a tall deck 427 in a C-70 Chevy dump truck. (it's still around somewhere).
To answer your question, it "should" clear the fuel line. GM has a habit of making everything as cheap as possible, which would mean they designed that insulator plate to clear the fuel line.
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Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
Reason I'm looking at one is that I'm about to replace the pump to carb line on my 70. The PO had added about a 1/2" gasket stack to the carb base and dumped the stock hard line in the process for about the top six inches or so (cut it out and added an in-line filter and rubber hose on either end). The car came out of Arizona, so I'm wondering if he had hot fuel issues and that led to the stack.
The insulator plate looks like an option for me if I have issues after I swap the stack out for the stock gasket (very thin in 70 on all but the LT-1) and hard line. Thanks for the replies.
The insulator plate looks like an option for me if I have issues after I swap the stack out for the stock gasket (very thin in 70 on all but the LT-1) and hard line. Thanks for the replies.
Le Mans Master
Joined: Aug 2010
Posts: 9,272
Likes: 17
from arizona , I'd bet real money his carb. percolated in the summer, mine did. with your location , you may not have the same issues and could probably go to a 1/4" spacer\gasket if needed, and reconnect a hard line or one or the braided lines. My calif. 76 came stock with the 1/4" gasket with the hard bolt inserts for that reason.
hope this helps
hope this helps
Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
from arizona , I'd bet real money his carb. percolated in the summer, mine did. with your location , you may not have the same issues and could probably go to a 1/4" spacer\gasket if needed, and reconnect a hard line or one or the braided lines. My calif. 76 came stock with the 1/4" gasket with the hard bolt inserts for that reason.
hope this helps
hope this helps