Correct exhaust manifolds 283/327 for 64 to 66 ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

weim55 · 05-11-2022, 11:18 AM

Correct exhaust manifolds for 283/327 for 64 to 66? Are the manifolds center dump with no angle on the left and right? Are the manifold essentially the same except for the alternator mount bracket on the left side? I have a pair of right side center dump ram horn manifolds from a 63 impala that I believe will work on the truck as long as I’m not using an alternator bracket on the left side? My truck has a long waterpump so I don’t need the bracket mount on the exhaust manifold.

Steve weim55 Colorado
Posted via Mobile Device

**The Rocknrod** · 05-11-2022, 02:20 PM

Getting the right manifolds center dump or not doesn't matter much since your water pump isn't correct anyway, so use what you need to use in order to get it running.

**MikeN** · 05-11-2022, 02:24 PM

I have rams horn manifolds on my 64. They point straight down (guess that is what you are calling center dump?) and they work just fine.

**cwcarpenter98** · 05-11-2022, 02:28 PM

The correct manifolds will dump straight down at the center for your truck. Since you don't need to use the alternator bracket, you can use both manifolds from the 63 Impala that you have if they both dump straight down

weim55 · 05-11-2022, 02:46 PM

I plan on using a factory style Y pipe hence The importance of knowing the dump angle to match. I think you guys answered the question, thanks for the help!

Steve weim55 Colorado

**LostMy65** · 05-11-2022, 03:53 PM

Yep, my 66 has the y-pipe and has the center dump straight down manifolds.

05-11-2022, 11:18 AM	#1
weim55 Registered User Join Date: Jan 2017 Location: Larkspur, Colorado Posts: 904	Correct exhaust manifolds 283/327 for 64 to 66 ?? Correct exhaust manifolds for 283/327 for 64 to 66? Are the manifolds center dump with no angle on the left and right? Are the manifold essentially the same except for the alternator mount bracket on the left side? I have a pair of right side center dump ram horn manifolds from a 63 impala that I believe will work on the truck as long as I’m not using an alternator bracket on the left side? My truck has a long waterpump so I don’t need the bracket mount on the exhaust manifold. Steve weim55 Colorado Posted via Mobile Device

05-11-2022, 02:20 PM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Correct exhaust manifolds 283/327 for 64 to 66 ?? Getting the right manifolds center dump or not doesn't matter much since your water pump isn't correct anyway, so use what you need to use in order to get it running. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

05-11-2022, 02:24 PM	#3
MikeN Senior Member Join Date: Oct 2007 Location: Marietta, GA Posts: 776	Re: Correct exhaust manifolds 283/327 for 64 to 66 ?? I have rams horn manifolds on my 64. They point straight down (guess that is what you are calling center dump?) and they work just fine.

05-11-2022, 02:28 PM	#4
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,421	Re: Correct exhaust manifolds 283/327 for 64 to 66 ?? The correct manifolds will dump straight down at the center for your truck. Since you don't need to use the alternator bracket, you can use both manifolds from the 63 Impala that you have if they both dump straight down __________________ Christian Carpenter 1963 C10 - Frankentruck 283, 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

05-11-2022, 02:46 PM	#5
weim55 Registered User Join Date: Jan 2017 Location: Larkspur, Colorado Posts: 904	Re: Correct exhaust manifolds 283/327 for 64 to 66 ?? I plan on using a factory style Y pipe hence The importance of knowing the dump angle to match. I think you guys answered the question, thanks for the help! Steve weim55 Colorado

05-11-2022, 03:53 PM	#6
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,468	Re: Correct exhaust manifolds 283/327 for 64 to 66 ?? Yep, my 66 has the y-pipe and has the center dump straight down manifolds. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035



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