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MagmaJct · 06-07-2015, 09:30 PM

AFAIK I have a bone stock 350 on my C10 with the exception of the Edelbrock 1405 (Carter AFB) with automatic choke upgrade. I have yet to break 10 MPG. Uphill, downhill, loaded, unloaded, pulling a trailer, not pulling a trailer.

But my engine has chronic low vacuum at idle. In drive the vacuum is 10 in/mg. I have upcoming plans to pull the timing cover and inspect the timing gear for wear and a possible jump. I wish I could get 14 MPG!

Once I get the low vacuum resolved I can try and get that Quadrajet I got off eBay working.

Regards,
Mike

06-07-2015, 09:30 PM	#3
MagmaJct Registered User Join Date: May 2008 Location: Mesa, AZ Posts: 281	Re: Gas mileage AFAIK I have a bone stock 350 on my C10 with the exception of the Edelbrock 1405 (Carter AFB) with automatic choke upgrade. I have yet to break 10 MPG. Uphill, downhill, loaded, unloaded, pulling a trailer, not pulling a trailer. But my engine has chronic low vacuum at idle. In drive the vacuum is 10 in/mg. I have upcoming plans to pull the timing cover and inspect the timing gear for wear and a possible jump. I wish I could get 14 MPG! Once I get the low vacuum resolved I can try and get that Quadrajet I got off eBay working. Regards, Mike __________________ I own 3 classic vehicles. 1971 LWB C10 Deluxe. 1974 VW Super Beetle. 1971 VW Fastback. The C10 and the Super Beetle run, the Fastback is just not there yet! Please visit my Super Beetle and Fastback profile on TheSamba.