TH350 users...

[8AV8]

How can I make my speedo accurate after a TH350 swap? New speedo gear, maybe? Part numbers would be great.

 

[1975ssnova]

new speedo gear will work,Sorry dont know part #.

 

[Sleeper1987]

How can I make my speedo accurate after a TH350 swap? New speedo gear, maybe? Part numbers would be great.

wich speedo head is in the tailshaft?Im getting ready to do my swap but it has the large head like the 200r4 so i plan to use that gear in mine if it will swap.

 

[1975ssnova]

the metric version turbo 350 has a smaller head, I do not know about the older 350's.

 

[49-blues]

Check with chris at CKPerformance-he would know and probably have the parts.

 

[8AV8]

duh

Why didn't I think of that?

 

[MeanBuicks]

Here's a resource as well as a place to purchase...

Speedometer gear calulator.

Speedometer gear part numbers.

 

[8AV8]

Thanks CKperf

Chris @ CK had the part I needed. He makes it idiot-proof. He asked what gears and what tire height and that was it. Thumbs up for service Chris...thanks.

 

[Sleeper1987]

wich speedo head is in the tailshaft?Im getting ready to do my swap but it has the large head like the 200r4 so i plan to use that gear in mine if it will swap.

I just want to say i was incorrect in the above statement. the 200r4 uses a small head like the older th350 but is a differant diameter gear/guide wich make them non interchangable.