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My speedo is out - what rpm is 30 mph?

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My speedo is out - what rpm is 30 mph? by Arns85GT

Started on	: 05-26-2004 03:33 PM
Replies	: 5
Last post by	: Arns85GT on 05-26-2004 08:02 PM

Arns85GT
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Report this Post05-26-2004 03:33 PM

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I have to drive my 85 Muncie 4 speed (3.65) to the shop to get my speedo fixed.

I need to know what rpm to drive 30 mph and 60 mph so I don't get a ticket.

Can anybody help on this one?

Arn

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ca_xtreme
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Report this Post05-26-2004 03:53 PM

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depends on the gear your in 1st gear prob redlining it...
2nd prob right around 2200 i would say

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fierobrian
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Report this Post05-26-2004 06:05 PM

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with mine i at 1300- 1400 rpms for 30 mph
45 mph is about 1900 rpm
these are all in 4 gear, going 30 in 4 gear you just at the lowest rpm before you will need to down shift if you know what i mean

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Arns85GT
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Report this Post05-26-2004 06:32 PM

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Thanks guys, That 2200 in second sounds like what I need. My idle currently is 1500.

I don't know if I can realistically get into 4th below 2000 rpm.

Anybody know what 3rd is at 30 mph?

Arn

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STRATOHACKER
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Report this Post05-26-2004 07:20 PM

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Arn,
On my 85 4 speed 60 mph is around 3100 rpm. The car does not have the original trans in it though and I suspect it has a 4:10 in it.
I take it you have got it running?

------------------

85 GT 4-speed
3.4 pushrod, 390 Holley carb, Edlebrock intake, MSD 6A ignition. 04 Gran Prix exhaust tips, Ported mandifolds and lots more to go.
Richey

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Arns85GT
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Report this Post05-26-2004 08:02 PM

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It's running but not without it's difficulties.

The secondaries aren't cooperating and I have a chronic drip from my fuel regulator assembly that I can't seem to shake.

Other than that, it sounds really awesome. It is deep and the stock Fiero cam is surprisingly lumpy with a carb. It sounds like an SBC to me, not unlike the old 327.

Keep tuned, I'll be doing pics.

Tomorrow I am trying to get it into PBJ's hands for some necessary work (speedo?)

Arn

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