redline? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

292farmer · 12-11-2009, 09:13 PM

i put my tach on today in my 1972 gmc c20 a sunpro 2 5/8" not too big but doesn't distract from the clean stock interior, and i wasnt sure what the redline was i thought maybe 5000? but i was revving it and finally seeing the rpms corresponding with sound and around 3500rpms it sounded like it was gonna shoot a piston to the moon my dad says he remembers his 292 he threw in a jeep had a factory suggested 4200rpm redline is this correct? i didnt see any redline suggestions in my manuals thanks guys

oldblue1968chevy · 12-11-2009, 10:31 PM

7000 oughta do er...

JK

Idk

Longhorn Man · 12-11-2009, 10:39 PM

what engine?

292farmer · 12-11-2009, 10:49 PM

whoops lol its a 292 inline 6 original motor except for rebuild recently, damn i thought you guys could read minds

Longhorn Man · 12-11-2009, 10:55 PM

LOL... I guess i coulda looked at your screen name.
I'm not sure what the redline is on that one, but 4200, maybe 4500 is probably about it.

**special-K** · 12-11-2009, 11:35 PM

I`m not sure,either.But,over 4,000 you`ll be out of the power band anyway.3,000+ is prolly a good shift point for running it out.

chevy72pu · 12-11-2009, 11:40 PM

Quote:

Originally Posted by 292farmer

i put my tach on today in my 1972 gmc c20 a sunpro 2 5/8" not too big but doesn't distract from the clean stock interior, and i wasnt sure what the redline was i thought maybe 5000? but i was revving it and finally seeing the rpms corresponding with sound and around 3500rpms it sounded like it was gonna shoot a piston to the moon my dad says he remembers his 292 he threw in a jeep had a factory suggested 4200rpm redline is this correct? i didnt see any redline suggestions in my manuals thanks guys

Any pix of the tach installed?

292farmer · 12-12-2009, 09:34 AM

thanks guys ill be gone rest of today but maybe i can get a pic in, tonite or prob tomm.

292farmer · 12-12-2009, 08:01 PM

heres some pics haven't finished hidng the wiring as i dont think that will be the final mounting spot, was thinking down by the oil pressure gauge but was afraid of ruining the printed circuit but havent measured yet

Jacfourteen · 12-12-2009, 08:13 PM

that's pretty imaginative using an exhaust clamp...I've always seen hose clamps used on the column

dirtball · 12-12-2009, 08:19 PM

I think those tachs are adjustable for 4-6-or 8 cyl. engines. If the switch is not in the correct position, you will get a false reading. You probably already know this, just thought I would mention it.
Brett

292farmer · 12-12-2009, 08:33 PM

lol yeah i played with the switches on tach night i got it. i was waiting for someone to notice the exhaust clamp

i didn't feel like buying a hose clamp when i had an exh. clamp in my tool box plus its not a final resting place what do u guys think about next to the oil press. gauge?

Mt Man Chad · 12-12-2009, 08:56 PM

Should be 4000 the stock 6 cyl tach goes to 5000.

Wideopenracing15 · 12-12-2009, 09:25 PM

Hey 292 do you have a build thread of your truck?

292farmer · 12-12-2009, 09:30 PM

wideopenracing no build thread yet its in the works for next week, i should've done it sooner with how much i've done and all the questions ask lol thanks chad as u see that was my guess too i put the red pointer at 4g's

Wideopenracing15 · 12-12-2009, 09:34 PM

Alright I'll be waiting

**special-K** · 12-13-2009, 08:47 AM

I`d leave it where you have it for best visibility.

chevy72pu · 12-13-2009, 02:19 PM

Quote:

Originally Posted by special-K

I`d leave it where you have it for best visibility.

What he said. I like the clamp too! Thanks for the pix.

292farmer · 12-16-2009, 10:53 AM

Quote:

Originally Posted by Wideopenracing15

Hey 292 do you have a build thread of your truck?

finally made one yesterday check it out hope the link works :p http://67-72chevytrucks.com/vboard/s...d.php?t=376520

69GMCLonghorn · 12-16-2009, 11:42 AM

Quote:

Originally Posted by Mt Man Chad

Should be 4000 the stock 6 cyl tach goes to 5000.

True, but the stock 8 cylinder tach only went to 5000 also... And I could rev the sh... stuff out of my v-8. I think the previous posts of around 4000 are a good ball park. No need to have the pistons swapping holes, especially if there's no power up there anyways.

marcsRX · 12-16-2009, 12:18 PM

So where is redline on a stock 350?

Does it have a governor to regulate it, or can i spin it till she blows?

69GMCLonghorn · 12-16-2009, 12:25 PM

Quote:

Originally Posted by marcsRX

So where is redline on a stock 350?

Does it have a governor to regulate it, or can i spin it till she blows?

You can spin it till it blows! Been there, done that, bought the T-shirt! Actually, I'd put redline on the 350 at somewhere around 5500, so not far off from what the tach maxes out at. If you open up the intake and exhaust, you might squeeze 6K out of it, but in stock form, you're way out of the power band at that point, so there's no point to it. All the 350 truck engines to the best of my knowledge are 4 bolt mains, which can typically stand a little more abuse... But it all depends on the condition of everything.

12-11-2009, 09:13 PM	#1
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	redline? i put my tach on today in my 1972 gmc c20 a sunpro 2 5/8" not too big but doesn't distract from the clean stock interior, and i wasnt sure what the redline was i thought maybe 5000? but i was revving it and finally seeing the rpms corresponding with sound and around 3500rpms it sounded like it was gonna shoot a piston to the moon my dad says he remembers his 292 he threw in a jeep had a factory suggested 4200rpm redline is this correct? i didnt see any redline suggestions in my manuals thanks guys

12-11-2009, 10:31 PM	#2
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: redline? 7000 oughta do er... JK Idk __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

12-11-2009, 10:39 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: redline? what engine?

12-11-2009, 10:49 PM	#4
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: redline? whoops lol its a 292 inline 6 original motor except for rebuild recently, damn i thought you guys could read minds Last edited by 292farmer; 12-11-2009 at 10:50 PM.

12-11-2009, 10:55 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: redline? LOL... I guess i coulda looked at your screen name. I'm not sure what the redline is on that one, but 4200, maybe 4500 is probably about it.

12-11-2009, 11:35 PM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: redline? I`m not sure,either.But,over 4,000 you`ll be out of the power band anyway.3,000+ is prolly a good shift point for running it out. __________________ "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 ~ Last edited by special-K; 12-13-2009 at 08:46 AM.

12-12-2009, 09:34 AM	#8
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: redline? thanks guys ill be gone rest of today but maybe i can get a pic in, tonite or prob tomm.

12-12-2009, 08:01 PM	#9
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: redline? heres some pics haven't finished hidng the wiring as i dont think that will be the final mounting spot, was thinking down by the oil pressure gauge but was afraid of ruining the printed circuit but havent measured yet Attached Images

12-12-2009, 08:13 PM	#10
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: redline? that's pretty imaginative using an exhaust clamp...I've always seen hose clamps used on the column __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

12-12-2009, 08:19 PM	#11
dirtball Registered User Join Date: May 2006 Location: Colorado Posts: 412	Re: redline? I think those tachs are adjustable for 4-6-or 8 cyl. engines. If the switch is not in the correct position, you will get a false reading. You probably already know this, just thought I would mention it. Brett __________________ Brett

12-12-2009, 08:33 PM	#12
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: redline? lol yeah i played with the switches on tach night i got it. i was waiting for someone to notice the exhaust clamp i didn't feel like buying a hose clamp when i had an exh. clamp in my tool box plus its not a final resting place what do u guys think about next to the oil press. gauge? Last edited by 292farmer; 12-12-2009 at 08:37 PM.

12-12-2009, 08:56 PM	#13
Mt Man Chad Registered User Join Date: Oct 2006 Location: Oakridge Oregon Posts: 1,864	Re: redline? Should be 4000 the stock 6 cyl tach goes to 5000. __________________ 68 CST SWB - Gold/White 50th anniversary /TH350/Buddy Buckets/3.73 Posi/dogdish caps. 68 K10 Burb - Gold/White 327/SM465/NP205/3.73 "Daa Burb" build thread Last edited by Mt Man Chad; 12-12-2009 at 08:57 PM.

12-12-2009, 09:25 PM	#14
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: redline? Hey 292 do you have a build thread of your truck?

12-12-2009, 09:30 PM	#15
292farmer Registered User Join Date: Nov 2009 Location: stoddard nh Posts: 693	Re: redline? wideopenracing no build thread yet its in the works for next week, i should've done it sooner with how much i've done and all the questions ask lol thanks chad as u see that was my guess too i put the red pointer at 4g's

12-12-2009, 09:34 PM	#16
Wideopenracing15 Registered User Join Date: Aug 2009 Location: Des Moines, IA Posts: 299	Re: redline? Alright I'll be waiting



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12-13-2009, 08:47 AM	#17
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: redline? I`d leave it where you have it for best visibility. __________________ "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 ~

12-16-2009, 12:18 PM	#21
marcsRX 68 C10 SWB Join Date: Nov 2009 Location: Chicago Posts: 216	Re: redline? So where is redline on a stock 350? Does it have a governor to regulate it, or can i spin it till she blows? __________________ "How much physical pain do you go through on a daily basis that you can directly attribute to your lack of intelligence?" -R0bman

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