Javascript Disabled Detected

You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality.

Building a High-Performance Holden Six

Started by _oldjohnno_ , Dec 27 2009 04:45 PM

Next

Please log in to reply

66 replies to this topic

#1 _oldjohnno_

Guests

Posted 27 December 2009 - 04:45 PM

The How to Build a Hot Holden Six webpage has been updated again. There's a fair bit of new stuff, much of the existing stuff updated and there are some more photos. My apologies to those on dialup; with over 30,000 words + photos it might be slow to load and really needs to be broken up into smaller chunks. One day I'll get around to it....

Back to top

#2 _CraigA_

Guests

Posted 27 December 2009 - 05:12 PM

This is great info oldjohnno. I read this over and over before planning my new engine.

Appreciate your efforts to create the web page, and thanks so much for sharing your experience. :clap:

Back to top

#3 _brendan_h_

Guests

Posted 27 December 2009 - 05:45 PM

i found this a ew days ago on google. i never know you did it. great write up

Back to top

#4 Tiny

Oh My, Don't you post alot

Administrators
10,018 posts

Name:Tiny
Location:Sydney
Joined: 04-February 07

Posted 27 December 2009 - 08:18 PM

Hi Oldjohnno,

I Have made this topic a pinned topic, I hope you approve!
While i have not read the website you have created, I have only skimmed it, The information contained there is extremely valuable and should serve as a VERY good guide for anyone working on a holden six.

Thank you for taking the time and effort to create this page and share your knowledge and experiences with us.

Regards
Tiny.

Back to top

#5 _Bomber Watson_

Guests

Posted 27 December 2009 - 08:23 PM

What the little guy in the corner said.

Thanks oldjohnno, well done.

Cheers.

Back to top

#6 _Skorcher_

Guests

Posted 30 January 2010 - 12:09 PM

Oldjohnno....you are a bloody champion mate. This link explained more to me in an hour's reading than all the guys I've spoken with over the past year or so. Well done mate.

Cheers, Vince

Back to top

#7 _threeblindmice_

Guests

Posted 03 February 2010 - 12:19 PM

Thanks for posting ,a very detailed account and a good read ,covering all areas .

Back to top

#8 _UCaLX_

Guests

Posted 05 February 2010 - 03:01 PM

If the Holden 6 was a religion then, "How to Build a Hot Holden 6" would be the bible. What a great read :spoton:

I feel so much more enlightened.

Back to top

#9 _oldjohnno_

Guests

Posted 16 February 2010 - 12:17 PM

Thanks for the comments fellas.
Unfortunately it looks like the original web host has fallen over, so the page has been relocated to here.
Still got a few photos (and the pdf version) to upload yet but it's basically usable now.

Back to top

#10 Peter UC

Forum Fixture

Members
770 posts

Location:Emerald Vic
Joined: 08-November 05

Posted 16 February 2010 - 12:27 PM

Oldjohnno great write up, has there been any conclusion on when the 173 castings became based off the 202 casting, did that only start on the blue 2850 engines?

Back to top

#11 _oldjohnno_

Guests

Posted 17 February 2010 - 04:49 PM

I always thought the blue 2850s were cored the same as the 202, but don't have any 173s handy to be 100% sure. In other words, measure before you bore or buy.

Back to top

#12 Peter UC

Forum Fixture

Members
770 posts

Location:Emerald Vic
Joined: 08-November 05

Posted 17 February 2010 - 07:20 PM

So the reds are definatly different, damn that red 173 in the shed is now fairly useless, hopefully the 179 I have is still alright.

Back to top

#13 _sonic_injection_

Guests

Posted 21 February 2010 - 08:23 PM

This is the best, most informative tech article I've ever read. I don't know how you find the time. thanks
BB

Back to top

#14 _pacey1977_

Guests

Posted 23 February 2010 - 08:57 PM

This is the best, most informative tech article I've ever read. I don't know how you find the time. thanks
BB

great read guys great work.

Back to top

#15 _oldjohnno_

Guests

Posted 25 April 2010 - 09:56 PM

Updated again, the biggest change being that it's been split up into sections so it's now a bit more friendly with a slow connection. Also some additional info under cylinder heads, comp ratio and torsional vibration sections.

Back to top

#16 Bart

Shit a brick

Members
2,559 posts

Location:Sydney
Car:LJ Torana
Joined: 20-November 05

Posted 03 May 2010 - 10:16 PM

Any idea where to get a high torque, reduction gear starter motor for a Holden 6?

Back to top

#17 _robrenjus_

Guests

Posted 03 May 2010 - 10:23 PM

Any idea where to get a high torque, reduction gear starter motor for a Holden 6?

i think i used a black motor vk commodore one on mine

Back to top

#18 Bart

Shit a brick

Members
2,559 posts

Location:Sydney
Car:LJ Torana
Joined: 20-November 05

Posted 04 May 2010 - 09:33 AM

Any idea where to get a high torque, reduction gear starter motor for a Holden 6?

i think i used a black motor vk commodore one on mine

Was that a high torque reduction type?

Back to top

#19 _76_torana_

Guests

Posted 26 May 2010 - 12:21 PM

hey there. im refering my question to the section in building a high performance 6 about 'down draft commen plenum setups'. in it you talk about the 350 holley being a poor choice for an engine with a fair bit of work done to the head, and a hotter cam for the pourpose of being able to acheive more through what i guess you would say, a good variable jet carby.. and main point you make for the possibilitly of the 350 under performing is the axis at which the butterflys move. iv become very interested in your thoughts of using a 4 barrel manifold and an adaptor to turn the carby 90 degrees so the butterfly shaft runs paralel to the engine. and as it turnes out for a while now i have been having a head ache with a holley 465 mini spread bore carby on my 202 with these modifications to the head and cam. iv been trying different jet sizes to eliminate the flat spots in it and look for possible causes, but you have me thinking it might be down to distribution. because of course the smaller primary barrels are closer to the front of the engne while the secondaries are closer to the back. i am yet to modify the manifold to mount the carby on its side and if it was to be an improve ment than i was going to also try the same thing with the 350 to see if it went better than the 465. but my question was do you of anyone that has any sort of sucess with the 465's? or am i just wasting my time? you mentioned you have heard of people having sucess with the 390 and 465's but are they better than a well sorted variable jet carby on an engine with such mods like mine? just wondering if you knew of anyone that has perhaps been down this road of 4 barrels and 2 barrels on a 6?

thanks mate, i really look forward to your responce and appreciate your help.

Glen.

Back to top

#20 _oldjohnno_

Guests

Posted 25 August 2010 - 12:56 AM

Another minor update. Main changes are the addition of a couple of new pages (jetting from scratch, tuning SUs) and a bit more info on bore relieving. Also you can now download the whole thing as a zipped archive from here. Main page is still here.

Back to top

#21 _oldjohnno_

Guests

Posted 01 May 2011 - 10:40 AM

Updated again, a fairly big one this time. Several new sections: Sonic Testing, the Clearance/Viscosity/Temp. equation, Reducing Friction Losses, Porting and Flow Testing, Modifying the Factory Varajet Manifold, Cam Selection etc. A lot of the existing pages have been updated too eg. more on harmonic balancers etc. Still a long way to go but probably halfway there now. The main page is still here (hit refresh if you're not seeing any changes) and the downloadable version is here.

Back to top

#22 _Bomber Watson_

Guests

Posted 01 May 2011 - 12:53 PM

Yay something to read.

Cheers.

Back to top

#23 _oldjohnno_

Guests

Posted 01 May 2011 - 02:47 PM

Yay something to read.

Cheers.

Only did it to get you away from those stick books for five minutes Bomber...

Back to top

#24 _CraigA_

Guests

Posted 01 May 2011 - 02:51 PM

Top job as always Oldjohnno.

You are very generous sharing such useful knowledge and experience. Thanks.

Back to top

#25 _Bomber Watson_

Guests

Posted 01 May 2011 - 02:57 PM

Lol thanks mate.

About a third the way through reading it start to finish for the third time since i first discovered your site many moons ago....Need to read it more often.

Like the upgrades.