I6 300 Red line
I6 300 Red line
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From: Oregon-Take me wheeling..
I6 300 Red line
got a 91 ford f150, its got a tach, but no redline on the tach. its stock with fuel injection and has 170000 miles on it. what is redline for the 300 I6.
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From: redding U.S.A.
I6 300 Red line
we don't really have an exact one around here, but most would agree that 4000rpm is as high as it should go, but they've been taken to 5000, i believe even 6000 in stock form and been fine.
I wouldn't bring it to 4k regularly. the thing quits at 3200rpm for me so i just shift once it hits that.
I wouldn't bring it to 4k regularly. the thing quits at 3200rpm for me so i just shift once it hits that.
Elder User
Joined: Jul 2003
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From: Weston, Nebraska
I6 300 Red line
I have an 86 4x4 with a 300-6 and I just set my redline at 4000 (picked up a used electronic rpm gauge at a sale for $5 on a pallet full of bran new chevy parts, cams, bearings, pushrods, etc. I don't have a chevy though), my truck has around 200,000 on it and about 8000 miles ago I sheared off the timing gears reving it to 4200, but the fiber gear was getting old anyway. The only thing is when I replaced them, I screwed up the pan gasket and now it drips for about 5 secs after I shut it off.
Redneck-Cowboy
Redneck-Cowboy
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I6 300 Red line
I have a '79 custom 100 with the 300 i6, how hard is it to put a tach in? it is an auto tranny but I was thinking of putting one just for looks and to seewhat rpm's sound best with my headers and glass packs 
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Posting Guru
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From: redding U.S.A.
I6 300 Red line
It's a three wire hook up. not hard at all.
ground wire, positive wire, and negative side of coil wire.
ground wire, positive wire, and negative side of coil wire.
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From: Metro Detroit (Redford)
I6 300 Red line
Originally posted by steve83
3500 is the stock hp peak, so there's no point revving it higher unless it has a LOT of mods.
3500 is the stock hp peak, so there's no point revving it higher unless it has a LOT of mods.
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Joined: Oct 2002
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From: Connecticut
I6 300 Red line
yeah i figured out at what speed is 4500 on my truck... 35 mph.. lol and i have noticed that at about 27 mph it doesnt pull very hard.. ( in first gear of course) have hit 55 in second 85 in third( down a hill) and 110 in fourth... my truck is 11 years old and it has 145000 HARD miles on it... towing "high" revving... and it still runs like it was brand new god i love this motor... but yeah a tach is in the works so i can fine tune my shifting procedure... lol
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Joined: Feb 2003
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From: Muskegon, MI (home)
I6 300 Red line
I love my six too, planning on installing a Holley 2bbl carb and EFI manifolds on er when I get home. Yes I agree there is really no gain in revving a 300 six past 3500 it just won't make any difference. Besides, it's a good way to spin a bearing or float lifters. A 300 is built for torque not speed.
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From: Muskegon, MI (home)
I6 300 Red line
Mike67...
I would go to a 4bbl carb and intake, but I am on a budget now so the 2bbl seems to be the biggest bang for my buck. Also I learned in the "300 with a 2bbl" thread a 2bbl won't kill my mileage. Also I have a new member to my small F-series collection, the 77 highboy so I need to stop somewhere.
I would go to a 4bbl carb and intake, but I am on a budget now so the 2bbl seems to be the biggest bang for my buck. Also I learned in the "300 with a 2bbl" thread a 2bbl won't kill my mileage. Also I have a new member to my small F-series collection, the 77 highboy so I need to stop somewhere.
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