Holley-which secondary spring - The 1947 - Present Chevrolet & GMC Truck Message Board Network

johnwaynejeep · 07-20-2017, 12:07 AM

I'm replacing my QJet with a Holley 4160 (1850-2). I need help in choosing the correct spring for the vacuum secondary diaphragm to make sure they open at the right time. I have a 75 C10 short bed flare side. The title says the weight is 3050. I think the real weight is more like 3750.

Is there a chart to cross reference vehicle weight with the diaphragm spring?

Thanks
Robert

BTW, I've had great luck with the Qjet and I plan to rebuild the Qjet and have it on the backburner ready to install.

07-20-2017, 12:07 AM	#1
johnwaynejeep Registered User Join Date: Jul 2014 Location: Pacific Grove, CA Posts: 105	Holley-which secondary spring I'm replacing my QJet with a Holley 4160 (1850-2). I need help in choosing the correct spring for the vacuum secondary diaphragm to make sure they open at the right time. I have a 75 C10 short bed flare side. The title says the weight is 3050. I think the real weight is more like 3750. Is there a chart to cross reference vehicle weight with the diaphragm spring? Thanks Robert BTW, I've had great luck with the Qjet and I plan to rebuild the Qjet and have it on the backburner ready to install. __________________ Robert 1975 C10 - Huckleberry 2007 Jeep JK - John Wayne Jeep Smittybilt front/rear bumper, 10K winch Pacific Grove, CA



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