help finding out speedo signal
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From: p'cola FL
Car: 88 iroc-z/28
Engine: 408 lsx
Transmission: 5800 stall
Axle/Gears: 4.71
help finding out speedo signal
i had a 86-90 ish "large hole" electic sensor from a firebird/caprice etc... worked perfect wired directly to my 97 lt1 instrument cluster.
i have switched transmissions and am forced to go to a mechanical drive.
found several adapters to convert back to an electric signal.
my question is, what signal does the cluster need, or what was the rating on my old speedo sensor?
all the adapters i find are 8 or 16 "pulse per rev"
i remember from my dash swap searching that the speedo was 4000ppm. im just confused.
i have switched transmissions and am forced to go to a mechanical drive.
found several adapters to convert back to an electric signal.
my question is, what signal does the cluster need, or what was the rating on my old speedo sensor?
all the adapters i find are 8 or 16 "pulse per rev"
i remember from my dash swap searching that the speedo was 4000ppm. im just confused.
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Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Need 4 Speed-O-Meter
Your original sensor was geared to output 4,000 PPMi.
That’s what the BUFFER needs to see.
The BUFFER has up to 3 outputs depending on configuration.
One is 4,000 PPMi for the speedometer.
Another is 2,000 PPMi for the CRUISE.
The other is 2,000 PPMi for the ECM.
Because the adapters you found are 8 or 16 PPR, you need to gear them so they will render 4,000 PPMi.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
If People Drove Any Slower They’d Be Going Backwards
When you see fog lights on in good weather beware. Low performance driver ahead. Right grandma?
How bout those nervous nellies too scared to drive without headlights on in the daytime or if there is a little rain!
.
.
That’s what the BUFFER needs to see.
The BUFFER has up to 3 outputs depending on configuration.
One is 4,000 PPMi for the speedometer.
Another is 2,000 PPMi for the CRUISE.
The other is 2,000 PPMi for the ECM.
Because the adapters you found are 8 or 16 PPR, you need to gear them so they will render 4,000 PPMi.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
If People Drove Any Slower They’d Be Going BackwardsWhen you see fog lights on in good weather beware. Low performance driver ahead. Right grandma?
How bout those nervous nellies too scared to drive without headlights on in the daytime or if there is a little rain!
.
.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Thread Starter
Supreme Member
iTrader: (3)
Joined: Jan 2004
Posts: 2,311
Likes: 0
From: p'cola FL
Car: 88 iroc-z/28
Engine: 408 lsx
Transmission: 5800 stall
Axle/Gears: 4.71
Re: help finding out speedo signal
thank you for all the info!!! TGO ROCKS!
glad i didnt order the 8 pulse one.
glad i didnt order the 8 pulse one.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
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