BB Corvette Exhaust Manifolds? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Texasdeere · 08-03-2007, 02:02 PM

Has anyone tried using Big Block Corvette exhaust manifolds on their 67-72 truck. Thinking it might be a decent alternative to headers if they will fit? Better than stock manifolds anyway.

If anyone has tried this let me know,

Thanks

Texasdeere · 08-16-2007, 05:22 PM

Anyone?

Texasdeere · 08-16-2007, 05:35 PM

Here is a set for the 70-74 models. The turnout is a little different on the drivers side.

Mt Man Chad · 08-16-2007, 06:22 PM

Sounds like a great idea to me!

But I have never tryed to see if they fit a truck!

Texasdeere · 09-26-2007, 11:40 AM

I ordered a set today. I will let everyone know if they fit or not.

Later

BCOWANWHEELS · 09-26-2007, 02:32 PM

where did you get them. i,ve been looking for a set for a while now.
bob

Texasdeere · 09-26-2007, 03:37 PM

I ordered them from Midway Auto Supply online. They are made by Dorman and are $130 to $140 each plus free shipping.

The Dorman Part #s are: DOR-674-505 (pass side)
DOR-674-506 (drivers side)

http://www.midwayautosupply.com/p-42...h-674-505.aspx

http://www.midwayautosupply.com/p-42...h-674-506.aspx

If you buy the ones from the Vette suppliers with the correct GM stamp they go for about $600 each!

72 Cheyenne402 · 09-26-2007, 05:38 PM

I am in the market please let us know if they fit

BCOWANWHEELS · 09-26-2007, 08:50 PM

thanks TEXAS C10 for the time you took to share the link so we can get a set also.
BOB

Texasdeere · 09-26-2007, 08:57 PM

It will be about a week before I get these on for a test fit. I will be installing new motor mounts too. I have the 72 factory BB stuff on there now but the pass side is sagging pretty bad. So new rubber replacements are on the way for both sides.

Texasdeere · 10-01-2007, 09:54 PM

I got the manifolds in this evening. I got started but nothing for sure yet. I am going to remove the pass side header tomorrow (drivers side is out) then install the new motor mounts. Both engine mounts are sagging pretty bad. Hopefully I will have something for you guys tomorrow evening!

streetstar · 10-01-2007, 10:46 PM

i will be paying attention to this -- those will look better on my stock 454 engine swap than headers--- i hope they work well for you

Texasdeere · 10-02-2007, 06:25 PM

Well they aint gona work.

The drivers side fit well, but would have required some trimming on the top of the motormount. About 3/4" would need to come off the top back corner of the part that stays on the block. This side manifold actually fit very well.

The pass side would only require 1/4" trimed off the pass side mount in the same place, but the exhaust would dump right into the frame rail.

It is real tight and a lot of lines would have to be moved and I am not willing to cut the frame at all.

The engine is jacked up in the pictures. If it was set down the pass side would dump into the frame.

The bottom pic shows what would need to be trimmed on the mounts, but the right side manifold just isn't going to work.

08-03-2007, 02:02 PM	#1
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	BB Corvette Exhaust Manifolds? Has anyone tried using Big Block Corvette exhaust manifolds on their 67-72 truck. Thinking it might be a decent alternative to headers if they will fit? Better than stock manifolds anyway. If anyone has tried this let me know, Thanks Last edited by Texasdeere; 08-16-2007 at 05:22 PM.

08-16-2007, 05:22 PM	#2
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: BB Corvette Exhaust Manifolds? Anyone? Attached Images Last edited by Texasdeere; 08-16-2007 at 05:27 PM.

08-16-2007, 05:35 PM	#3
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: BB Corvette Exhaust Manifolds? Here is a set for the 70-74 models. The turnout is a little different on the drivers side. Attached Images Last edited by Texasdeere; 08-16-2007 at 05:35 PM.

08-16-2007, 06:22 PM	#4
Mt Man Chad Registered User Join Date: Oct 2006 Location: Oakridge Oregon Posts: 1,864	Re: BB Corvette Exhaust Manifolds? Sounds like a great idea to me! But I have never tryed to see if they fit a truck! __________________ 68 CST SWB - Gold/White 50th anniversary /TH350/Buddy Buckets/3.73 Posi/dogdish caps. 68 K10 Burb - Gold/White 327/SM465/NP205/3.73 "Daa Burb" build thread

09-26-2007, 11:40 AM	#5
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: BB Corvette Exhaust Manifolds? I ordered a set today. I will let everyone know if they fit or not. Later

09-26-2007, 02:32 PM	#6
BCOWANWHEELS Registered User Join Date: Nov 2006 Location: KINGSPORT,TN. Posts: 3,035	Re: BB Corvette Exhaust Manifolds? where did you get them. i,ve been looking for a set for a while now. bob __________________ I BELIEVE IN JOHN 3:16

09-26-2007, 03:37 PM	#7
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: BB Corvette Exhaust Manifolds? I ordered them from Midway Auto Supply online. They are made by Dorman and are $130 to $140 each plus free shipping. The Dorman Part #s are: DOR-674-505 (pass side) DOR-674-506 (drivers side) http://www.midwayautosupply.com/p-42...h-674-505.aspx http://www.midwayautosupply.com/p-42...h-674-506.aspx If you buy the ones from the Vette suppliers with the correct GM stamp they go for about $600 each!

09-26-2007, 05:38 PM	#8
72 Cheyenne402 Registered User Join Date: Feb 2005 Location: Texas Posts: 581	Re: BB Corvette Exhaust Manifolds? I am in the market please let us know if they fit __________________ 1972 Cheyenne 402 LWB 2005 Silverado X-Cab 5.3L 2004 John Deere L120 20HP B&S

09-26-2007, 08:50 PM	#9
BCOWANWHEELS Registered User Join Date: Nov 2006 Location: KINGSPORT,TN. Posts: 3,035	Re: BB Corvette Exhaust Manifolds? thanks TEXAS C10 for the time you took to share the link so we can get a set also. BOB __________________ I BELIEVE IN JOHN 3:16

09-26-2007, 08:57 PM	#10
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: BB Corvette Exhaust Manifolds? It will be about a week before I get these on for a test fit. I will be installing new motor mounts too. I have the 72 factory BB stuff on there now but the pass side is sagging pretty bad. So new rubber replacements are on the way for both sides.

10-01-2007, 09:54 PM	#11
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: BB Corvette Exhaust Manifolds? I got the manifolds in this evening. I got started but nothing for sure yet. I am going to remove the pass side header tomorrow (drivers side is out) then install the new motor mounts. Both engine mounts are sagging pretty bad. Hopefully I will have something for you guys tomorrow evening! Attached Images

10-01-2007, 10:46 PM	#12
streetstar Registered User Join Date: May 2007 Location: Moore, Oklahoma Posts: 2,396	Re: BB Corvette Exhaust Manifolds? i will be paying attention to this -- those will look better on my stock 454 engine swap than headers--- i hope they work well for you Last edited by streetstar; 10-01-2007 at 10:46 PM.

10-02-2007, 06:25 PM	#13
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: BB Corvette Exhaust Manifolds? Well they aint gona work. The drivers side fit well, but would have required some trimming on the top of the motormount. About 3/4" would need to come off the top back corner of the part that stays on the block. This side manifold actually fit very well. The pass side would only require 1/4" trimed off the pass side mount in the same place, but the exhaust would dump right into the frame rail. It is real tight and a lot of lines would have to be moved and I am not willing to cut the frame at all. The engine is jacked up in the pictures. If it was set down the pass side would dump into the frame. The bottom pic shows what would need to be trimmed on the mounts, but the right side manifold just isn't going to work. Attached Images

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