Ram Tubes manifold from an EFI Black 6 onto a 173 Head for total gas driven 186

[wendyh]

hey do u have pics of this manifold in the beddy???

[Heavy Judy.]

hey do u have pics of this manifold in the beddy???

look further back in this conversation wendyh

Mark.

[ben]

i bought one of these manifolds for 5 bucks at the wreckers cause it was missing all the petrol gear.. i think the bloke had no idea what i was gunna do with it:)

intersted to hear how you go with it camden:)

[Rothu]

It's all going to plan so far! I've got to get an O2 sensor fitted to exhaust for the Peel microprocessor and just work out what I'll need for the new engine cover.

After much research and maths, the Impco 200 mixer with a cfm of 287 will work well within the range of a 186 which needs 269cfm. The L-type convertor has a rating of 345hp and the mixer is rated at 175hp. With the sensor in properly, and with the bloody big throttle body, I should be going quite hard and economically!

Finally I bring my Non-Bedford into the technology of the 21th century!

[Rothu]

I found a very comprehensive Impco manual:

http://www.scribd.com/doc/17379058/IMPCO-Training-Manual

Lots of great info!

I'll be putting a 4 wire heated oxygen sensor in soon.

[Rothu]

Cleaned convertor, getting big 3/4" gas line  , and made up a new throttle cable connector to replace the stupid convoluted one that was on it! 

[John Abbott]

Wow Rothu...That is big looking sucker.Cant wait to hear what it goes like?

[Rothu]

Righto! Loooong time, but back in action!

Since the 173 head was going all right, I've delayed doing this swap until I thoroughly researched some more.
The ram tube manifold will not bolt straight onto a 9 port head, it needs some aluminium build up at the bolt/studs points. Which I got done.

I've decided to replace the 173 head with a VK EFI head instead. This is because I got given another ram tube manifold and found out that that particular head is the best Holden ever did before they started used the skyline or V6 engines to replace all of the old sixes. There is a small but significant difference between the VK EFI head and the VK Varijet head. The EFI head has a greater flow rate specifically for the ram tube manifold.
This page shows how to set up an older block for the later heads: http://www.hotsixes.com/index.php?option=com_content&view=article&id=4&Itemid=4

So I've got the VK head all cleaned up, and I'm swapping it all tomorrow.