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tips, technology, tools and techniques related to vehicle driveline components

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Richard/SIA
Richard Brengman
No. Nevada
(401 posts)

Registered:
01/17/2014 07:47PM

Main British Car:
1969 Triumph GT6+ 225" Buick V6

225 V6 intake, to port or not to port?
Posted by: Richard/SIA
Date: June 07, 2014 08:48PM

The current intake on my 225 V6 is an Offenhauser 360.
The manifold and intake ports are gasket matched to a FelPro 9943 intake gasket.
These ports are only about 1/4" shorter top to bottom than the later "Tall port" 231 heads.
So these heads have been ported pretty extensively and the engine runs better than any 225 is supposed to.

Consensus here seems to be that the Offy 360 is a pretty poor intake.
I have an untouched KB No. 1 intake.
I believe the KB will be shorter than the Offy, and I need all the space I can get to avoid cutting a hole in the bonnet.

The KB ports are a LOT smaller.
Is there a KB No. 2 I should be looking for, or do I port this one to get close to gasket match?
If I port it the bottom sealing edge will get pretty thin, top edge is already pretty close to correct.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: 225 V6 intake, to port or not to port?
Posted by: roverman
Date: June 11, 2014 06:44PM

I suggest measuring oah. of the two manifolds/beats guessing. If you must use your KB, add weld to bottom of port flanges ? roverman.


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