10-09-2014, 07:23 PM | #1 |
Registered User
Join Date: Jan 2014
Location: Billings Montana
Posts: 183
|
Manifolds
Who has these? http://www.vetteheaders.com/servlet/...orvette/Detail
I found the link here somewhere and can't find the thread it was on. The thread had a bunch of other bolt on "stock" exhaust manifold type headers and manifolds. Looking for center straight dumps for K 10. Let's see pics of what you have please |
10-09-2014, 08:06 PM | #2 |
Registered User
Join Date: Jul 2012
Location: Ft Wayne Indiana
Posts: 1,204
|
Re: Manifolds
Those most likely won't flow much (if any) better than 2 1/2 ram horns, which you can get for $120. The rule seems to be, don't bother with headers unless you do true long tubes.
__________________
71 K20 64 GMC mud truck |
10-09-2014, 08:34 PM | #3 |
Registered User
Join Date: Jan 2014
Location: Billings Montana
Posts: 183
|
Re: Manifolds
Lol I'm not a power junkie. I just like the looks of them and want to know if they're any good for the price or if there are other similar out there
|
10-09-2014, 10:00 PM | #4 |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
|
Re: Manifolds
Factory rams horn manifolds actually flow quite well. Long tubes are not a great power adder, either. They do move the peak of the torque curve to a lower RPM but if the cost is over $300.00 they aren't worth the investment. Katech did a comparison on the dyno between stock manifolds, shorty headers and long tube headers. Shorties gained 5% over stock manifolds and long tubes gained 7% over stock manifolds on the LS6 and LS7 engines. It's hard to argue with the dyno results. On the LS7, the difference was a whopping 10 horsepower! I won't lift a wrench for that.
|
10-09-2014, 11:29 PM | #5 |
Senior Member
Join Date: Oct 2001
Location: Edgerton OH USA
Posts: 633
|
Re: Manifolds
Those are beautiful but very expensive. You would need the later model Corvette aluminum heads with the D shaped exhaust port to get a port match.
Here's what I used. They look better than cast iron and they match standard production heads. Mine are 1981 Corvette (first year for stainless tubing manifolds) with 2" outlet. 1982 and newer has 2 1/2 " outlets. I removed the heat shields, removed the AIR tubes and had the holes welded up plus a couple of cracks where all the tubes joined up. Then I coated them with Eastwood stainless exhaust coating and put in new studs. Purchase price used was $35. and total invested is about $150.00 Tom
__________________
'69 swb stepside in progress. '59 Corvette lifetime project |
10-10-2014, 03:24 AM | #6 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
|
Re: Manifolds
Quote:
|
|
10-10-2014, 12:38 PM | #7 |
Senior Member
Join Date: Oct 2001
Location: Edgerton OH USA
Posts: 633
|
Re: Manifolds
I was seriously considering the Speedway manifolds before I ran across the Vette ones. The Speedways are also available in polished stainless for $499. My build just didn't have the budget for that.
The Corvette ones place the outlet flange in the exact same place as the cast iron rams horns. The Speedway manifolds are block huggers if you need a little more clearance. Tom |
10-10-2014, 02:36 PM | #8 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
|
Re: Manifolds
Quote:
They do look cool, though! You could paint them gold color and call them McDonald's Golden Arches! LOL |
|
10-11-2014, 07:40 AM | #9 |
Registered User
Join Date: Jan 2014
Location: Billings Montana
Posts: 183
|
Re: Manifolds
Now I'm on the search for the stock replacements.
Thanks Basketcase |
10-11-2014, 10:43 AM | #10 |
Senior Member
Join Date: Oct 2001
Location: Edgerton OH USA
Posts: 633
|
Re: Manifolds
If you go looking for factory Corvettes here is what you are looking for.They media blast very nicely. I used ARP header studs in stainless. They are fine thread on the outer end and should hold better. Also go to NAPA and get stock exhaust manifold gaskets for the year manifold you use. These GM style never leak. Here's the right side also.
Tom
__________________
'69 swb stepside in progress. '59 Corvette lifetime project |
10-12-2014, 01:46 AM | #11 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
|
Re: Manifolds
Quote:
That year Corvette did not have D ports. These collectors would work perfect. http://www.summitracing.com/parts/he...ePkaAlwd8P8HAQ If you don't use the ball flange you would have to mig the 3" flange to seal on the backside. BTW, if you want to buy them, I need to upgrade to premium first. I have so many left-over parts I should just do it. Last edited by mechanicalman; 10-12-2014 at 01:52 AM. Reason: Add-on |
|
10-12-2014, 02:22 PM | #12 |
Senior Member
Join Date: Oct 2001
Location: Edgerton OH USA
Posts: 633
|
Re: Manifolds
Those would work nicely. The end pipes go under the plugs. On mine there is no ball flange, just flat like the cast iron ones. I also used the stock spark plug shields to protect the plug boots. They're a little hard to see in the photo under the pipes.
Tom |
10-14-2014, 07:05 AM | #13 |
Registered User
Join Date: Jan 2014
Location: Billings Montana
Posts: 183
|
Re: Manifolds
Looks great!
|
10-14-2014, 02:12 PM | #14 |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
|
Re: Manifolds
What I have is 2 of those exact same headers, brand new old stock never installed still with the part number tags. They are BOTH left side headers for a 1986 Corvette stainless steel with standard exhaust ports.
The AIR pipes need to be removed and the holes welded with stainless welding wire. I'd recommend ball style collectors. If you make a reasonable offer to buy them, I will upgrade to premium member to accept it. PM me for any more details. |
10-14-2014, 02:36 PM | #15 |
Registered User
Join Date: Aug 2009
Location: Simi Valley, CA
Posts: 193
|
Re: Manifolds
Are there any like those '86 corvette manifolds that use the angled center dump?
|
10-14-2014, 02:47 PM | #16 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
|
Re: Manifolds
Quote:
http://www.jegs.com/i/Hedman/500/696...T4xxoCNVnw_wcB The 86 vette tubular manifolds will fit 67-72 pickups with very minor clearance issues, and flat-out fit if the engine is in the rear position. All non-stock headers have to be hooked up, they rarely bolt to the existing exhaust except they do make headers for later model trucks that bolt up like 88 and up. |
|
Bookmarks |
Thread Tools | |
Display Modes | |
|
|