Thread: Holden 173 in SIIa

Originally Posted by 4x4x2

Hi
Im told the best motor is a 149 but they may be hard to get .something to do with the torque vs revs and not all that powerful to cause damage.Def go with electronic ign

Yeah, a bit thin on the ground these days. The 149 was released in the EH & early HD's and manufactured between August 63 through to Feb 65. The 179 was also an option in these, so not many examples made compared to the later red motors. The 173, 179 & 186's were produced in far bigger quantaties.

Originally Posted by mick88

http://www.crowcams.com.au/media/cat...%206%20All.pdf

Here are a list of Crow cam for the red six.
As you can see there are cams available to increase torque and power in the low rev range.


Cheers, Mick.

I put the Crow towing/torque cam in my last 202 - was a very sweet engine with that in it - or maybe it was just that I got all the lift back that was missing from the lobes of the old one... Either way, it made a big difference in the old IIA.