1965 gmc exhaust manifolds - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fscboss · 03-05-2014, 08:40 PM

i have a 65 gmc with a 350 mounted in the forward position. we have the trans and custom driveshaft installed. we can not find exhaust manifolds that clear the engine mount brackets. the ram horns with the 45 degree exit look like they would work. the ram horns with the straight exit would hit the cross member. the 1956 chevy manifolds might work. hopefully you guys have an idea. thanks in advance.

**Captainfab** · 03-06-2014, 01:15 AM

The manifolds that dump straight down are for the '63-'66 trucks with a small block in it's original location. Since you have moved the engine forward, similar to the '67-'72's, you will need to use the manifolds that the '67-'72's use. Those are the ones that are angled towards the rear. Of course this is assuming you used the correct '67-'72 small block motor mount brackets. I don't know if they will work if you have something else in there.

LVPhotos · 03-06-2014, 12:44 PM

Speedway Motors is a good place to go. If manifolds don't work use headers.
If brackets scare you these are the ones I run.

http://www.speedwaymotors.com/search...aust+Manifolds

Robert Haas · 03-07-2014, 01:09 PM

I went a different way.

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03-05-2014, 08:40 PM	#1
fscboss Registered User Join Date: Jan 2014 Location: grand view, idaho Posts: 25	1965 gmc exhaust manifolds i have a 65 gmc with a 350 mounted in the forward position. we have the trans and custom driveshaft installed. we can not find exhaust manifolds that clear the engine mount brackets. the ram horns with the 45 degree exit look like they would work. the ram horns with the straight exit would hit the cross member. the 1956 chevy manifolds might work. hopefully you guys have an idea. thanks in advance. Last edited by chevy_mike; 03-05-2014 at 10:24 PM. Reason: Removed Want to buy part. Leaving open for helpful info but will close if WTB or WTS comes up.

03-06-2014, 01:15 AM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: 1965 gmc exhaust manifolds The manifolds that dump straight down are for the '63-'66 trucks with a small block in it's original location. Since you have moved the engine forward, similar to the '67-'72's, you will need to use the manifolds that the '67-'72's use. Those are the ones that are angled towards the rear. Of course this is assuming you used the correct '67-'72 small block motor mount brackets. I don't know if they will work if you have something else in there. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

03-06-2014, 12:44 PM	#3
LVPhotos Registered User Join Date: Jan 2013 Location: Las Vegas, NV Posts: 1,857	Re: 1965 gmc exhaust manifolds Speedway Motors is a good place to go. If manifolds don't work use headers. If brackets scare you these are the ones I run. http://www.speedwaymotors.com/search...aust+Manifolds __________________ 1962 shortbed 408cui small block, TKO 600 5-speed, bagged Porterbuilt suspension. 18" Salt Flats http://www.cardomain.com/ride/332579...t-c-k-pick-up/ http://67-72chevytrucks.com/vboard/s...d.php?t=560081

03-07-2014, 01:09 PM	#4
Robert Haas Registered User Join Date: Mar 2014 Location: Salinas Ca. Posts: 625	Re: 1965 gmc exhaust manifolds I went a different way.

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