LUVTruck.com

Hey all, I tried to search for my answer, but couldn't seem to find it;
What is the redline on a stock G180 (1980)?
I know max horsepower is achieved at, like, 4800rpm, but what is the max safe limit?

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1980 4x4, 3" body lift, G180/G180 head, Pacesetter header, Offenhauser Dual Port Intake, Weber 32/36, Electronic Ignition, Glasspack & a Smokestack.

The 3 I have sound like they want to come a part if I hit 5k. IDK what, or if a book would say.

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OK, I'm over it. Where's the beer?

i know on my gemini with the same motor and trany it is 6000 to 6500 in yellow the red ofter 6500 this is what the stock tach shows

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My old but now gone Luv...

If somebody has an owners' manual it'll tell you the max allowable speed in whatever gear and you can use online gear ratio calculators to figure out what the revs would be. Last time I did that for my 72 (old style G180 motor) it worked out to like 5500 RPM. I doubt if I'd want to take it up that high.

I've been wondering about this since I got the little truck!
Anyone know what cruising RPM is at 75mph? My truck is still a long way from being able to cover long distances...

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1975 Project LUV
It's ALIVE!

Thanks for the replies. Unfortunately, I don't have an owners manual.
I do have a Haynes and a Chiltons, and neither lists max rpm.
I regularly shift at 4-4200, but rarely get as high as 5k. as I don't want to do damage.

Rondog; I don't know what to tell you, Mine sounds pretty good at 5k, Just haven't gone higher out of fear.

Ctmandu; Wow! 6-6500 seems high. Ever spin yours up that far?

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1980 4x4, 3" body lift, G180/G180 head, Pacesetter header, Offenhauser Dual Port Intake, Weber 32/36, Electronic Ignition, Glasspack & a Smokestack.

Hope this helps, but didn't really find a redline listed.

Wikipedia:
http://en.wikipedia.org/wiki/List_of_Isuzu_engines

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i cruse at about 4000 to 4500 and thats around 75/80 i think ... i have had mine to about 6200 on my truck but it does have a cam in it, not sure what grind as when i bought it the guy couldn't remember what it was but he had his up 6500 many many times he said... and i have only had my truck up to 100 once but dont remember what the rpms where

here is a video of me passing a car at about 4400/4600 rpm and that was around 82mph... once i get the new motor in with the bike carbs ill have to get a good reading for the rpms

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My old but now gone Luv...

MPH Calculator


I have no tach but I have had my truck at a steady 90mph (needle was pegged past 85) and according to the same MPH Calculator my truck has seen 5650rpm with my short tires.

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i know i'm kinda drudging up an old post but rather post in old threads than create new ones.

my semi-newly rebuilt to stock spec g180 in my 1980 4x4, with 215 75 r14's i can do about 70 at 4000 rpm, and my truck sounds like its going to explode. i don't think it has a new cam ... and i am running all stock ignition, but no real misses at 4k...mine's random in the 2-3 when lightly stepping on the gas.

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1980 Chevy Luv 4x4 mikado factory Black.

1.8L 4spd

I have had mine at 6500 several times. Sounds real smooth! Well more like a SCREAM! These engines have forged rods and crankshaft. I would think the pistons and flywheel would be a major concern. I think the pistons are cast.

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1980 4X4 LUV

In a 4wd you have 4.10:1 gears in the rear. Back in high school, I used to drive my 76 2wd (4.56:1 gears) 75 down the interstate all the time. It held up just fine. After high school, it was almost 10 years before I really drove it again, I took it on the highway and thought it was going to blow up. It all about perception. It's probably fine. When I was 16, I didn't think anything about it because I was used to it. At 28, I had gotten spoiled on vehicles with overdrive.

really?... six grand redline when power stops at what... 4? heh. i took mine to 5 a couple times today winding out third and it just sounded like a banshee. mind you i have the stock exhaust manifold with the emssions plug welded shut, and an older flowmaster muffler on it that is near the rear axle... but the muffler for the most part is quiet, especially when compared to a glasspack..

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1980 Chevy Luv 4x4 mikado factory Black.

1.8L 4spd

Also, winding it up to a high rpm and then shifting is a lot different than holding the high rpm for a long time while on the highway.

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OK, I'm over it. Where's the beer?

very true. on that note, with my spedo being a few mph slower than i'm really going, at about 4k i'm doing 68(so... 73ish), keeping it steady, and it sounds like a banshee. heh, i am getting used to driving it and not cringeing when i get on the freeway.


what Rpm does everone usually shift at

A)when trying to take off fast
and
B)when just driving normally

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1980 Chevy Luv 4x4 mikado factory Black.

1.8L 4spd