What Flowmaster to use??????? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Longhorn · 04-04-2002, 09:11 PM

What Flowmaster and what size pipe should I use on stock 396. I dont want it to drive me out of the cab but would like a nice sound as I put the power to the old Longhorn. Thanks.

------------------
Bill

Rapid City, SD

67 short stepside, in weeds 6Cyl
69 Longhorn CST 396 nice original

WHYBYNU · 04-04-2002, 09:33 PM

I run 50s,2.5in pipes dumped over the rear on mine, 350sb they sound nice but can get loud in the cab on highway 65-70mph 2500 rpm but sound awsome when cruising town, not loud at all in the cab. I've heard good things about their DELTA FLOWS not as loud in the cab.

lukecp · 04-04-2002, 10:55 PM

I have 40's on my mild 350, and i dont think they are too loud. They have a nice deep tone to them. If you want them quieter, get the Delta Flow mufflers, and run the exhaust straight out the back, instead of out the side, or turndowns.

------------------
Lucas

"Another proud owner of one of the coolest trucks ever built"

drop_shift@hotmail.com

My Daily-Driver: '72 Chevy LWB Custom/10. Rebuilt 350, 300 HP thanks to a few go-fast goodies. Ochre with a white top. Future plans include a frame off restoration, and maybe a blown 383.

*67Fleetsidedream* · 04-04-2002, 11:35 PM

I have the 50s also. I am very satisfied with them. Just load enough to turn heads, but not loud enough to attract cops.
67

Ben

[This message has been edited by 67Fleetsidedream (edited April 04, 2002).]

69 longhorn · 04-05-2002, 10:09 AM

I would go with 2 1/2" pipe,& a set of 50s. The 40s arent too bad till you get out on the road. 4.10 gears will make em right on that resonance point at hyway speed. On the longhorn,you can move em back,& that will help tone em down. also an addition of an H pipe in the system will mellow them. I run a 383(approx 390 hp/440 tork),& had headers,2 1/4 pipe,muffs just behind the cab,40s,& 2 1/4 tail pipes straight out the back/with 3 1/2 X 18" cans.....it was too beligerent! I have gone to 2 1/2 " pipe,added an H pipe, & moved the muffs back to hang at the cross member just ahead of the axle. I just have turn downs (for now),but the system is quieter......untill you stand on the throttle. Good luck.....69 longhorn.

04-04-2002, 09:11 PM	#1
Longhorn Registered User Join Date: Mar 2001 Location: Rapid City, South Dakota Posts: 222	What Flowmaster to use??????? What Flowmaster and what size pipe should I use on stock 396. I dont want it to drive me out of the cab but would like a nice sound as I put the power to the old Longhorn. Thanks. ------------------ Bill Rapid City, SD 67 short stepside, in weeds 6Cyl 69 Longhorn CST 396 nice original __________________ Bill Rapid City, SD 67 short stepside, in weeds 6Cyl 69 Longhorn CST 396 nice original

04-04-2002, 09:33 PM	#2
WHYBYNU WHYBYNU when old will do Join Date: Feb 2002 Location: Hot Springs, AR. Posts: 643	I run 50s,2.5in pipes dumped over the rear on mine, 350sb they sound nice but can get loud in the cab on highway 65-70mph 2500 rpm but sound awsome when cruising town, not loud at all in the cab. I've heard good things about their DELTA FLOWS not as loud in the cab. __________________ 71 Cheyenne super 2 tone green and white ZZ6 - Th350 4/6 drop 20x8.5 / 20x10 Billet Specialties

04-04-2002, 10:55 PM	#3
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	I have 40's on my mild 350, and i dont think they are too loud. They have a nice deep tone to them. If you want them quieter, get the Delta Flow mufflers, and run the exhaust straight out the back, instead of out the side, or turndowns. ------------------ Lucas "Another proud owner of one of the coolest trucks ever built" drop_shift@hotmail.com My Daily-Driver: '72 Chevy LWB Custom/10. Rebuilt 350, 300 HP thanks to a few go-fast goodies. Ochre with a white top. Future plans include a frame off restoration, and maybe a blown 383. __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

04-05-2002, 10:09 AM	#5
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	I would go with 2 1/2" pipe,& a set of 50s. The 40s arent too bad till you get out on the road. 4.10 gears will make em right on that resonance point at hyway speed. On the longhorn,you can move em back,& that will help tone em down. also an addition of an H pipe in the system will mellow them. I run a 383(approx 390 hp/440 tork),& had headers,2 1/4 pipe,muffs just behind the cab,40s,& 2 1/4 tail pipes straight out the back/with 3 1/2 X 18" cans.....it was too beligerent! I have gone to 2 1/2 " pipe,added an H pipe, & moved the muffs back to hang at the cross member just ahead of the axle. I just have turn downs (for now),but the system is quieter......untill you stand on the throttle. Good luck.....69 longhorn. __________________ http://community.webshots.com/user/hotrodhorn

04-04-2002, 11:35 PM	#4
67Fleetsidedream Wiseass secured himself a BAN Join Date: Nov 2000 Location: MOON!!! Posts: 2,282	I have the 50s also. I am very satisfied with them. Just load enough to turn heads, but not loud enough to attract cops. 67 Ben [This message has been edited by 67Fleetsidedream (edited April 04, 2002).]



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