Different Types of Exhaust Manifolds? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Erl · 04-12-2002, 03:37 PM

What are the different types of exhaust manifolds (ram horn, etc)? Why are some angled and some straight? Which ones go with which truck or motor?

Mike C · 04-12-2002, 04:56 PM

There is an infinite number of exhaust manifolds, but I ASSUME you just mean for these trucks. To narrow it down to two, the two wheel drive trucks came with angled and the 4x4s with straight. Corvettes have the straight dumps as well. Some are 2" outlet some are 2.5" The trucks are 2" outlet, straight or curved.

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70 GMC 3/4 ton Sierra Grande 402/TH400
72 Jimmy 4WD 4spd 4" & 35's
64 Corvette Coupe
68 Camaro 'vert TPI & TH700
69 Z/28 355 12.6's @110
72 Datsun 240Z-ol' reliable

Erl · 04-13-2002, 09:26 AM

What does ram horn style mean?

Rod · 04-13-2002, 09:33 AM

Take a look at the shape of these.

**Desert Rat** · 04-13-2002, 09:57 AM

If anyone needs i have a sweet pair of angled back with smog tubes attached,all studs are perfect,wish they were a big block set this nice $75pr. plus chippin

Southpa · 04-13-2002, 02:35 PM

I checked prices out at the local GM dealer a while ago. They wanted $400 + (Cdn) for just ONE ramhorn, lol. Those guys are INSANE!

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Southpa
1970 GMC 1500 Custom
Victoria, BC, Canada

http://communities.msn.com/Alsplac/shoebox.msnw

Dandeluxe · 04-13-2002, 07:59 PM

erl, i got my 2.5 inch corvette straight dumps brand new from modern chev. classic muscle
for 200.00 bucks oldmusclecars.com
they are corvette ramhorns

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1969 cst swb 350/400 th DANNY C. ddclux@aol.com st. louis mo.
for pic.s go to http://community.webshots.com/user/dandeluxeGO TO Fotki. com for public pic.s under DANDELUXE
I started out with nothing and i held on to it

O'l Buck · 04-13-2002, 11:37 PM

I got a new straight dump ramhorn from a junkyard close to me for $30, brand new, in the box, aftermarket from some company in canada.

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Ol' Buck: '72 Chevy 1/2T 4x4 shortbox stepside 350/350auto on '84
ralleys and 31/10.5s

Angel girl: 67 Cutlass convertible
330, 3spd stick

Greener: 90 GMC Jimmy
350/auto
Chad Stephens
Orleans,NE

no name yet: 72 442 under serious construction

**67OLDSTYLE72** · 04-14-2002, 01:39 PM

I have a set at home that were off of a 69 threw early 71 that are rams horn exhaust that turn back and turn in at the bottom.

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Jay Snyder
Leechburg, PA (Northeast of Pittsburgh)
'71 Chevy Dually 4x4
'69 Chevy Pro Street SWB
'58 Chevy Apache 4x4
'72 chevy camper special 4x4 402 v8 (not factory) just cool.
67 GMC shortbed v6 4spd.

we buy and sale trucks and parts

Erl · 04-15-2002, 01:42 PM

I have seen ram horn exhaust manifolds for sale, one is straight dump and one is an angle dump. Why is this? Do 4x4 models have two straight dump manifolds and are they required for clearance?

LAP · 04-15-2002, 02:42 PM

What year Corvette manifolds are ya'll running? What about AC and altenator mounts? Are they the same as the truck manifolds?

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71 C20 Cheyenne
71 K10 SWB Cheyenne
72 C10 Cheyenne

**JIMs70GMC** · 04-15-2002, 07:39 PM

Erl, My 70 K25 has straight dump ramhorns both sides, 2" exit. I had an 85 K5 that had straight dump on the left and angled on the right(w/ heat riser valve) I believe the straight on the left was to clear the tranny linkeage off of the steering column.
Lap, I'm going to order 1962 vette ramhorns, $86 each. Both sides have mounts that personally I will not need and will cut off. I have no AC and altenator does not mount with exhaust manifold. I'll add the url for the site when I find it.

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1970 GMC K25 Custom
Chesapeake, VA
My 70 GMCor Webshots http://community.webshots.com/user/70gmc

**JIMs70GMC** · 04-15-2002, 07:43 PM

Here it is: http://www.gmpartsdirect.com/restoration_parts/

------------------
1970 GMC K25 Custom
Chesapeake, VA
My 70 GMCor Webshots http://community.webshots.com/user/70gmc

04-12-2002, 03:37 PM	#1
Erl Registered User Join Date: Mar 2002 Location: Dallas, TX Posts: 555	Different Types of Exhaust Manifolds? What are the different types of exhaust manifolds (ram horn, etc)? Why are some angled and some straight? Which ones go with which truck or motor? __________________ 1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX

04-12-2002, 04:56 PM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,714	There is an infinite number of exhaust manifolds, but I ASSUME you just mean for these trucks. To narrow it down to two, the two wheel drive trucks came with angled and the 4x4s with straight. Corvettes have the straight dumps as well. Some are 2" outlet some are 2.5" The trucks are 2" outlet, straight or curved. ------------------ 70 GMC 3/4 ton Sierra Grande 402/TH400 72 Jimmy 4WD 4spd 4" & 35's 64 Corvette Coupe 68 Camaro 'vert TPI & TH700 69 Z/28 355 12.6's @110 72 Datsun 240Z-ol' reliable __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

04-13-2002, 09:26 AM	#3
Erl Registered User Join Date: Mar 2002 Location: Dallas, TX Posts: 555	What does ram horn style mean? __________________ 1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX

04-13-2002, 09:33 AM	#4
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Take a look at the shape of these. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

04-13-2002, 02:35 PM	#6
Southpa Registered User Join Date: May 2000 Location: Victoria, BC, Canada Posts: 2,410	I checked prices out at the local GM dealer a while ago. They wanted $400 + (Cdn) for just ONE ramhorn, lol. Those guys are INSANE! ------------------ Southpa 1970 GMC 1500 Custom Victoria, BC, Canada http://communities.msn.com/Alsplac/shoebox.msnw __________________ 1970 GMC 1500 Custom Original 350/TH350 Victoria, BC, Canada You can wish in one hand and crap in the other. See which one gets filled first.

04-13-2002, 09:57 AM	#5
Desert Rat Senior Member Join Date: Dec 1999 Location: Darrington, Washington Posts: 3,963	If anyone needs i have a sweet pair of angled back with smog tubes attached,all studs are perfect,wish they were a big block set this nice $75pr. plus chippin

04-13-2002, 07:59 PM	#7
Dandeluxe Senior Member Join Date: Nov 2001 Location: st.louis mo. Posts: 717	erl, i got my 2.5 inch corvette straight dumps brand new from modern chev. classic muscle for 200.00 bucks oldmusclecars.com they are corvette ramhorns ------------------ 1969 cst swb 350/400 th DANNY C. ddclux@aol.com st. louis mo. for pic.s go to http://community.webshots.com/user/dandeluxeGO TO Fotki. com for public pic.s under DANDELUXE I started out with nothing and i held on to it __________________ 1969 cst swb 350/400 th . DANNY C . ["]FRIENDS DONT LET FRIENDS DRIVE F@RD$!! 1969 cst swb corvette hugger orange with 400 hp sbc I started out with nothing and i held on to it

04-13-2002, 11:37 PM	#8
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	I got a new straight dump ramhorn from a junkyard close to me for $30, brand new, in the box, aftermarket from some company in canada. ------------------ Ol' Buck: '72 Chevy 1/2T 4x4 shortbox stepside 350/350auto on '84 ralleys and 31/10.5s Angel girl: 67 Cutlass convertible 330, 3spd stick Greener: 90 GMC Jimmy 350/auto Chad Stephens Orleans,NE no name yet: 72 442 under serious construction __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

04-14-2002, 01:39 PM	#9
67OLDSTYLE72 Senior Member Join Date: Dec 1999 Location: LEECHBURG,PA.,U.S.A. Posts: 496	I have a set at home that were off of a 69 threw early 71 that are rams horn exhaust that turn back and turn in at the bottom. ------------------ Jay Snyder Leechburg, PA (Northeast of Pittsburgh) '71 Chevy Dually 4x4 '69 Chevy Pro Street SWB '58 Chevy Apache 4x4 '72 chevy camper special 4x4 402 v8 (not factory) just cool. 67 GMC shortbed v6 4spd. we buy and sale trucks and parts __________________ Jay Snyder Leechburg, PA (Northeast of Pittsburgh) 72 Chevy Cheyenne 4x4 camper special #matching '71 Chevy Dually 4x4 '69 Chevy Pro Street swb. '72 Chevy camper special 4x4 402 v8 (not factory) just cool. (truck puller) 70 Chevy swb 400 v8 400 turbo 72 Chevy suburban 4x4, 396 4spd. 68 Chevy shortbed 50th Anv. 327. 72 Chevy 2 wd. Blazer 69 Chevy swb 4x4 327 4spd. 58 Chevy Apache 4x4 swb. 71 Chevy CREW CAB swb 4x4 396 4spd. (just finished) WE BUY AND SALE TRUCKS AND PARTS

04-15-2002, 01:42 PM	#10
Erl Registered User Join Date: Mar 2002 Location: Dallas, TX Posts: 555	I have seen ram horn exhaust manifolds for sale, one is straight dump and one is an angle dump. Why is this? Do 4x4 models have two straight dump manifolds and are they required for clearance? __________________ 1968 GMC 305 V6 3/4 4x4 Stepside 06 Corvette Daily Driver Dallas TX

04-15-2002, 02:42 PM	#11
LAP Registered User Join Date: Jan 2001 Location: Slaughter, La Posts: 153	What year Corvette manifolds are ya'll running? What about AC and altenator mounts? Are they the same as the truck manifolds? ------------------ 71 C20 Cheyenne 71 K10 SWB Cheyenne 72 C10 Cheyenne __________________ 68 50th Longhorn Custom Camper 396 A/C 25 options 71 C20 Cheyenne 71 K10 SWB Cheyenne 72 C10 Cheyenne ----------------------- Slaughter, La

04-15-2002, 07:39 PM	#12
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Erl, My 70 K25 has straight dump ramhorns both sides, 2" exit. I had an 85 K5 that had straight dump on the left and angled on the right(w/ heat riser valve) I believe the straight on the left was to clear the tranny linkeage off of the steering column. Lap, I'm going to order 1962 vette ramhorns, $86 each. Both sides have mounts that personally I will not need and will cut off. I have no AC and altenator does not mount with exhaust manifold. I'll add the url for the site when I find it. ------------------ 1970 GMC K25 Custom Chesapeake, VA My 70 GMCor Webshots http://community.webshots.com/user/70gmc __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

04-15-2002, 07:43 PM	#13
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Here it is: http://www.gmpartsdirect.com/restoration_parts/ ------------------ 1970 GMC K25 Custom Chesapeake, VA My 70 GMCor Webshots http://community.webshots.com/user/70gmc __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm



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