high rmps

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Jul 19, 2008 | 09:37 PM

dude100

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high rmps

I was wondering if you guys could give me your .02$ on my truck. Altho my truck is not on the road yet i just finished building it, (1984 inline6 4spd 4x4 shortbox) i have taken it out on the road a few times and it feels as though it is a real low geared truck. When i hit 70km/h(50 sompthin miles) the engine was realy reving high. I would realy like to at least hit the speed limit i was hoping someone could give me some insite on this?

Jul 19, 2008 | 11:38 PM

Sycostang67

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Joined: Dec 2002

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From: Kuna ID

I'd suggest getting a tachometer. Then you will know exactly how fast the motor is going.

Jul 20, 2008 | 06:42 AM

srercrcr

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Being it's 4X4 it's is highly likely it has a high numeric rear axle and a non-OD 4 spd tranny, both black marks if you're looking to keep rmps down and save on fuel.

Jul 20, 2008 | 08:41 AM

0270

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Joined: Jun 2004

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From: rural area

You don't have it in 4x4 low do you? Post some pictures of this thing? I would love to have a shortbox 4x4.

Jul 20, 2008 | 11:05 AM

dude100

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I know that it does have a beefy gear ratio because when i put the axle back together i compared it to the old f100 2wd axle, i also know it was a plow truck and posibly a towtruck. I wonderd if maby it was in 4wd low but i got the shifter pushed all the way forward into 2high, at least thats what the shifter says, im going to play with it more and see what happens.
I put up a gallery but i cant find it, when i figer out how to use the gallery ill post some pics.

Jul 20, 2008 | 11:08 AM

magusjinx

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Joined: Jan 2008

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From: SW Washington coast

Sounds like it could be in low ... And also consider that the olde 4-speeds were geared low anyway ... All my olde bowties couldn't get much over 50 either ...

Jul 20, 2008 | 11:28 AM

dude100

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Well its deffinetly not in low i just tryed it in low and i was crusing around the farm in 4th doing 10-20km/h(very slow i managed to do a 4wd burnout) i guess im just going to have a slow truck. pics coming soon.