GM LT4 Crate Engine with Holley Pro Dash - Tachometer?

[383_StealthRam]

Not sure if this would help you. I'm not affiliated with them in any way, however, I spoke to someone over at Classic Instruments about their Zeus Link...

[383_StealthRam]

If anyone was wondering, the ultimate fix for this issue was to simply MOVE the TACH input to the Holley Pro Dash to a different IO channel. The Pro Dash...

[383_StealthRam]

Hi gents, trying to help out a friend with this. I've been thinking this should be a simple very common configuration for GM's crate LT1/LT4 swaps using...