Inline 6 Valve Cover Compatability - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Smniekamp · 03-29-2023, 11:49 AM

Does anyone know if I can swap a double hump style valve cover from a Chevy 250 with the older style without the double humps? I read that the valve covers that came with the integrated head (double hump) don't swap with the older style head valve covers.

I'm just trying to clean up the look in the engine engine bay, and hate the extra emissions stuff that goes with the double hump head. Will an older style valve cover fit on my integrated head motor?

**mongocanfly** · 03-29-2023, 01:04 PM

What I'm reading at summit says no..

D13 · 03-29-2023, 01:25 PM

Bolt patterns are different.
Surprise is that there are still integral heads out there, given their fondness for cracking and vacuum leaking causing the motor to go lean.

Smniekamp · 03-29-2023, 05:04 PM

I was worried that was the case, thank you for your responses!

I wouldn't be using the integrated head, however I have a brand new one laying around so I will be keeping it. If this one cracks then I will make the change. Thanks again!

Oldmans63C10 · 12-14-2023, 08:21 AM

I've never heard of the Inline 6cyl head as being a "Double Hump" head??
That name was used for the first year in 1961 on the high performance head, then used into 1970+ or - a few years. The different variances over those few year's that Chevrolet used them on the Small Block Chevy 283-302-327-350 HP V8 engines, the 461-462 and a few more were called Camel Hump or Double Hump heads.

The Valve Covers and Head's for Chevrolet 1963-1974 230-250-292's Inline 6cyl engines are interchangeable.
Hope this helps y'all...
Posted via Mobile Device

03-29-2023, 11:49 AM	#1
Smniekamp Registered User Join Date: Jan 2017 Location: Palmer, Alaska Posts: 135	Inline 6 Valve Cover Compatability Does anyone know if I can swap a double hump style valve cover from a Chevy 250 with the older style without the double humps? I read that the valve covers that came with the integrated head (double hump) don't swap with the older style head valve covers. I'm just trying to clean up the look in the engine engine bay, and hate the extra emissions stuff that goes with the double hump head. Will an older style valve cover fit on my integrated head motor? Attached Images

03-29-2023, 01:04 PM	#2
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,673	Re: Inline 6 Valve Cover Compatability What I'm reading at summit says no.. __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

03-29-2023, 01:25 PM	#3
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: Inline 6 Valve Cover Compatability Bolt patterns are different. Surprise is that there are still integral heads out there, given their fondness for cracking and vacuum leaking causing the motor to go lean. __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

03-29-2023, 05:04 PM	#4
Smniekamp Registered User Join Date: Jan 2017 Location: Palmer, Alaska Posts: 135	Re: Inline 6 Valve Cover Compatability I was worried that was the case, thank you for your responses! I wouldn't be using the integrated head, however I have a brand new one laying around so I will be keeping it. If this one cracks then I will make the change. Thanks again!

12-14-2023, 08:21 AM	#5
Oldmans63C10 Registered User Join Date: Oct 2020 Location: Mattawan,Michigan Posts: 7	Re: Inline 6 Valve Cover Compatability I've never heard of the Inline 6cyl head as being a "Double Hump" head?? That name was used for the first year in 1961 on the high performance head, then used into 1970+ or - a few years. The different variances over those few year's that Chevrolet used them on the Small Block Chevy 283-302-327-350 HP V8 engines, the 461-462 and a few more were called Camel Hump or Double Hump heads. The Valve Covers and Head's for Chevrolet 1963-1974 230-250-292's Inline 6cyl engines are interchangeable. Hope this helps y'all... Posted via Mobile Device



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