The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-30-2016, 11:16 AM   #1
TA1968
Registered User
 
TA1968's Avatar
 
Join Date: Dec 2015
Location: Pennsylvania
Posts: 50
Vette 2.5 Ram Horn Exhaust Maifold

Has anybody put them on a 68 2wd with v8 and vortec heads?
With out any modification as far as getting the tubes bent for the rest of the exhaust.

Been searching forum but get lost in all the no nonsense in between stuff.

Would appreciate pis if anybody has them.
TA1968 is offline   Reply With Quote
Old 10-30-2016, 11:32 AM   #2
RodnRudy
Senior Member
 
RodnRudy's Avatar
 
Join Date: Oct 2014
Location: New Palestine In
Posts: 932
Re: Vette 2.5 Ram Horn Exhaust Maifold

I bought a set to use on my 68 with 350. It doesn't have Vortec heads but exhaust ports are in the same location. The problem I found was that in the V8 location the manifolds dump so close to the cross member that it was going to be too tight of a bend on the down pipe. I located some stock exhaust manifolds and used them.
__________________
Phil
"Money is only a tool to create and achieve what you want most in life"
PayPal: rodnrudy@comcast.net
RodnRudy is offline   Reply With Quote
Old 10-30-2016, 11:49 AM   #3
B. W.
Registered User
 
B. W.'s Avatar
 
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
Re: Vette 2.5 Ram Horn Exhaust Maifold

I have them installed on a '70 K20 with vortec heads. I know, the 2wd's vs. the 4x4s are different because of motor mount locations. The 2wd's are more difficult to run because of the IFS cross member. With that said, the pass side fits well, lots of clearance. The driver's side is so close to the cross member I will need to notch it for clearance. I bought cheap dorman manifolds & trimmed off the brackets. Hard to see but the forward exhaust stud is 1/4" away from the cross member.
Attached Images
   
B. W. is offline   Reply With Quote
Old 10-30-2016, 04:05 PM   #4
72freak
Rottenwood Garage Member
 
72freak's Avatar
 
Join Date: May 2005
Location: Marietta, Georgia
Posts: 4,321
Re: Vette 2.5 Ram Horn Exhaust Maifold

Quote:
Originally Posted by RodnRudy View Post
I bought a set to use on my 68 with 350. It doesn't have Vortec heads but exhaust ports are in the same location. The problem I found was that in the V8 location the manifolds dump so close to the cross member that it was going to be too tight of a bend on the down pipe. I located some stock exhaust manifolds and used them.
I

Because I HATE headers, I put 2.5's on everything. 2x4, 4x4, trucks Blazers and Suburbans. I have NEVER had trouble getting them to clear. Yes, its a mildly tight turn at the bottom of them but it works fine.
__________________
2004 Chevrolet Suburban C1500
2001 Chevrolet 2500HD Crew 6.0
1999 Harley Davidson Electra Glide
1972 Chevrolet C-20 Custom Camper "Dump Truck"
1972 Chevrolet C-20 Suburban "Big Green"
1969 Chevrolet C-50 Wedge Hauler "Leonidis"
1966 C-10 2x4 short fleet 327 4 speed "Race Truck"
1952 Plymouth Cranbrook "Rican" (my grandfathers)
1931 Ford Model A Coupe "Black Beauty"
1930 Ford Model A truck "Club Cab" 4x4


Rottenwood Garage and Speed Shop.....where everything must be racy!

It's not just a hobby..It's a LIFESTYLE!!!

Thanks for nothing Barrett-Jackson

You cant fix stupid or teach accountability!


Time wasters, looky Lous and tire kickers are everywhere!
72freak is offline   Reply With Quote
Old 10-30-2016, 05:06 PM   #5
ck5566
Account Suspended
 
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
Re: Vette 2.5 Ram Horn Exhaust Maifold

Why don't you just get and use these,there meant for these trucks?
Attached Images
  
ck5566 is offline   Reply With Quote
Old 10-30-2016, 06:40 PM   #6
MoFormula
Registered User
 
Join Date: Jul 2013
Location: SE MO
Posts: 106
Re: Vette 2.5 Ram Horn Exhaust Maifold

Not my engine as I have a crate 350 in a 2wd 1972 GMC LWB. I deliberated ,read, and labored over this decision for months. Researched everything I could find. Ordered the angled truck manifolds. While waiting for them to arrive, I calculated the flow difference on the vette straight dumps. I decided what the hey and ordered the vette manifolds. Exhaust shop did a beautiful job. So glad i went with the straight dumps. They replaced long tube headers and I can't tell any difference in performance.
MoFormula is offline   Reply With Quote
Old 10-30-2016, 07:07 PM   #7
uncle
Senior Member
 
Join Date: Aug 2003
Location: Conyers,Ga.
Posts: 7,288
Re: Vette 2.5 Ram Horn Exhaust Maifold

You can also use a smaller starter to help with some of the clearance problems. I think I used a 90 model Chevy truck starter which is shorter and smaller diameter.
uncle is offline   Reply With Quote
Old 10-31-2016, 09:57 AM   #8
special-K
Special Order

 
special-K's Avatar
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
Re: Vette 2.5 Ram Horn Exhaust Maifold

Quote:
Originally Posted by ck5566 View Post
Why don't you just get and use these,there meant for these trucks?
Are those 2.5" outlet? I think that's what he's after. I'm happy with headers, but does anyone make angled ram horns in 2.5"?
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
special-K is offline   Reply With Quote
Old 10-31-2016, 10:16 AM   #9
MoFormula
Registered User
 
Join Date: Jul 2013
Location: SE MO
Posts: 106
Re: Vette 2.5 Ram Horn Exhaust Maifold

Quote:
Originally Posted by special-K View Post
Are those 2.5" outlet? I think that's what he's after. I'm happy with headers, but does anyone make angled ram horns in 2.5"?
I looked and looked and could not find any. Thought to myself "that would be a great opportunity for someone."
MoFormula is offline   Reply With Quote
Old 10-31-2016, 11:27 AM   #10
ck5566
Account Suspended
 
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
Re: Vette 2.5 Ram Horn Exhaust Maifold

Quote:
Originally Posted by special-K View Post
Are those 2.5" outlet? I think that's what he's after. I'm happy with headers, but does anyone make angled ram horns in 2.5"?
Ha you are right the Ram horns do measure only 2" so if it is wanted/needed for the extra Air Flow then the Vette's Ram Horns would be the best chose. Weather or not the straight dumps are going to be a problem for that quick bend that's needed for the 2WD apposed to the 4X4's having all that room there, lowering these trucks is where the problem occurs there. That is the reason behind moving mas amounts of air in enlarging the exit points Right!
ck5566 is offline   Reply With Quote
Old 11-01-2016, 02:42 PM   #11
TA1968
Registered User
 
TA1968's Avatar
 
Join Date: Dec 2015
Location: Pennsylvania
Posts: 50
Re: Vette 2.5 Ram Horn Exhaust Maifold

Id like to thank everyone's input.
Not sure what Im gonna use next but Im tired of putting new header gaskets on
TA1968 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:10 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com