1970 Chevelle SS454 LS5 Convertible

[Tracker1]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bill Pritchard</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: markinnaples</div><div class="ubbcode-body">To me it looks like it's all orange in that section, it's just the sunlight hitting the higher RPM section and the shadow of the steering wheel making the lower RPM orange part look darker?
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What he said. [img]<<GRAEMLIN_URL>>/headbang.gif[/img] </div></div>

Agreed, just the light playing tricks.

[SS4Real]

Here's a correct summary of 1970 Chevelle SS Tach's. Ultimately, you must look at the car's original build sheet to verify which tach came in the car (not all SS Chevelles came with a tach but all SS Chevelles had the round dash pods). You begin by looking at box 107 of the build sheet to see if the car came with the U14 IP Gauges option. If it does have the U14 IP Gauges option, then your next step is to look at box 72 to see the code for the tach in your car (if your car does not have the UP14 IP Gauges, then you will have --- in box 72 which means no tach). After looking at the code in box 72, here is the breakdown of the tachs that came in the 1970 SS Chevelles:

L34 396/350 hp 5500 rpm tach code 985
L78 396/375 hp 6500 rpm tach code 983
LS5 454/360 hp 5000 rpm tach code 938 ****or****
LS5 454/360 hp 5500 rpm tach code 985
LS6 454/450 hp 6500 rpm tach code 983

It's also possible that some cars **may** have come with different tachs due to different assembly plants or parts shortages. Again, ultimately to prove that exception you would need an original build sheet to see what code is in box 72.

Atlanta built LS5's commonly came with the 938 5000 RPM tach and some Baltimore built LS5's did as well. Again, you have to check the code in the build sheet (if available) to verify.

[Mr70]

The Chevelle/Elco/Monte C. #938 5K redline tach was intended for a small block or LS-3 engine.
Some early assembled Big Blocks were mistakenly noted to get them,as was the case here.

Some of the very early assembled 396 L-78's got the wrong redline tach too.A #985 5500 redline,instead of the correct #983 6500 redline.

[P.J.]

IN the 80 s I purchased a cluster from a 1970 Monticalro that was being scraped
It was a BB 4 speed and It had a 6500 redline tack.
PJ

[69VN]

But what puzzles me is that these cars came without an oil pressure gauge and instead in it's place an &quot;idiot&quot; light. Does anyone on SYC hate idiot lights?Don't know what they were thinking back then because it appears that a dash clock is more important....with a dash that size they could've placed a fuel gauge where the clock currently sits and placed an oil pressure gauge where the fuel gauge sits. I could be wrong but I've seen that some clocks were optional on '70 Chevelles. If you absolutely needed a clock, why could they have had an optional tic-toc tach...but that's just me. [img]<<GRAEMLIN_URL>>/hmmm.gif[/img]

[SuperNovaSS]

Are you trying to ruffle feathers P.J.? Try posting that on a Monte forum and watch the fireworks begin. :-)


Jason

[olredalert]

----Yes,,,and Red Alert had an LS5 tach in it when delivered. Stuff happens!!!......Bill S

[TimG]

And I'm sure Red Alert was never taken above the redline on the tach, right, Bill. [img]<<GRAEMLIN_URL>>/[/img]

[Material_Boy]

Nice LS-5 ragtop. I live in Chester Va about 3 miles from Goyne Chevrolet which is now Heritage Chevrolet. The Goyne family sold out about 20 years ago to Carter Myers Automotive group and Goyne Chevrolet became Heritage Chevrolet. I wonder if I know the original owner, though I don't recall ever seeing the car. Tommy Nolen, a member here lives just a few miles further away. You may recall the white 61 Impala SS 348 that Tommy restored some years ago. It too came from Goyne Chevrolet.

Dave

[olredalert]

----Depends which tach we are talking about, Tim!!!.......Bill S