Intake: Square bore or spreadbore? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mvfd70 · 11-28-2009, 01:59 PM

I've got a 400 SBC in a 78 silverado. Not real familiar with this engine. It's all stock and it needs a new carb or the Q-jet needs rebuilt. Would this have a square bore or spredbore on the intake?

Pyrotechnic · 11-28-2009, 02:03 PM

Spreadbore

kelgar50 · 11-28-2009, 02:04 PM

It would be a spreadbore but you could put a adapter style spacer on it and put on what ever you want.

mvfd70 · 11-28-2009, 02:15 PM

Thanks. Yeah i guess I could put an adapter on. I was hoping it was spreadbore. The plan now is to put the good running carb off my dodge truck onto that motor to see if it is a carb problem of something else. I'm pretty sure it's carb related but that'll tell me for sure.

I know the dodge and chevy throttle linkages are different. This is just going to go on temporarily. I gotta have my good carb back on my dodge since it's my daily driver.

11-28-2009, 01:59 PM	#1
mvfd70 Registered User Join Date: Jan 2007 Location: Opdyke, IL Posts: 775	Intake: Square bore or spreadbore? I've got a 400 SBC in a 78 silverado. Not real familiar with this engine. It's all stock and it needs a new carb or the Q-jet needs rebuilt. Would this have a square bore or spredbore on the intake? __________________ 1978 Chevrolet Silverado 3/4 ton 400 small block. 2000 F-250 Powerstroke 2002 GMC Yukon Denali XL

11-28-2009, 02:03 PM	#2
Pyrotechnic Registered User Join Date: Feb 2007 Location: Austin, TX Posts: 3,930	Re: Intake: Square bore or spreadbore? Spreadbore __________________ 1977 GMC Sierra Grande

11-28-2009, 02:04 PM	#3
kelgar50 Registered User Join Date: Nov 2008 Location: Bako,CA Posts: 64	Re: Intake: Square bore or spreadbore? It would be a spreadbore but you could put a adapter style spacer on it and put on what ever you want.

11-28-2009, 02:15 PM	#4
mvfd70 Registered User Join Date: Jan 2007 Location: Opdyke, IL Posts: 775	Re: Intake: Square bore or spreadbore? Thanks. Yeah i guess I could put an adapter on. I was hoping it was spreadbore. The plan now is to put the good running carb off my dodge truck onto that motor to see if it is a carb problem of something else. I'm pretty sure it's carb related but that'll tell me for sure. I know the dodge and chevy throttle linkages are different. This is just going to go on temporarily. I gotta have my good carb back on my dodge since it's my daily driver. __________________ 1978 Chevrolet Silverado 3/4 ton 400 small block. 2000 F-250 Powerstroke 2002 GMC Yukon Denali XL Last edited by mvfd70; 11-28-2009 at 02:15 PM.



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