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02-10-2008, 11:51 AM
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#1 |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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H-Pipe Question
Anybody thats running an h-pipe hear a difference in exhaust tone or pattern after you put it on? i am also wondering about performance gains.
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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02-10-2008, 12:42 PM
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#2 |
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Born Psycho
 
Join Date: Feb 2001
Location: brentwood,cal,usa
Posts: 4,901
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Re: H-Pipe Question
i work in a muffler shop (23 years now). an "H" pipe will mellow out your exhaust if it's a little too loud and supposedly help out on low end torque. i can't verify the low end torque thing but it will mellow it out.
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jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA |
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02-10-2008, 01:07 PM
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#3 |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Re: H-Pipe Question
well thats good, im looking to level out the little poping noises in the tone.
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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02-10-2008, 02:08 PM
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#4 |
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Registered User
Join Date: Jan 2006
Location: Kaufman, Tx
Posts: 827
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Re: H-Pipe Question
My flowmasters (under the cab with turn downs on the mufflers) would bubble when I let off the throttle. The H-pipe fixed that. It also helped the low RPM drone a little. Nothing major performance-wise.
Jay
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You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. If a hammer doesn't fix it, you have an electrical problem! Slot Cars, 1:24 Scale, 100MPH@100,000RPM, fastest things on wheels! 
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02-10-2008, 11:25 PM
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#5 |
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Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,446
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Re: H-Pipe Question
How does a guy figure out where the best place is to put the H?
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 |
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02-11-2008, 12:00 AM
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#6 |
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Born Psycho
Join Date: Feb 2001
Location: brentwood,cal,usa
Posts: 4,901
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Re: H-Pipe Question
paint a stripe on each pipe, take the truck/car out and run it pretty hard. lift it up and you'll see the "hot spot". thats where it should go but sometimes it's not feasable to install it in that exact spot.
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jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA |
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02-11-2008, 07:38 AM
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#7 |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Re: H-Pipe Question
what kind of paint and what will the "hot spot" look like?
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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02-11-2008, 11:30 AM
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#8 |
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Registered User
Join Date: Oct 2006
Location: las vegas
Posts: 88
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Re: H-Pipe Question
I've heard people say to take a white crayon and make a mark on the whole length of the exhaust. After you have ran the engine for a while, the wax closest to the headers will melt but at the point where the wax has'nt melted and the mark becomes visable is where the h-pipe should go.
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69 shorty w/ 67 front clip 
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02-11-2008, 12:20 PM
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#9 |
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Born Psycho
Join Date: Feb 2001
Location: brentwood,cal,usa
Posts: 4,901
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Re: H-Pipe Question
we use black spray paint. you'll see the "hot spot" where the paint will be burned but like i said, it's not always feasable to install the "H" in that exact spot. dang transmission is usually right in the way,lol.
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jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA |
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