CHRIS CRAFT COMMANDER FORUM ® .......A photo-intensive technical reference file and ongoing newsletter regarding the original fiberglass Chris-Craft Commander series. This is an independent not-for-profit and non-commercial web site, not affiliated with the Chris Craft Commander Club ~~ or ~~ Chris-Craft Corporation. Our mission here is to "have fun and share information" about the Commander series (and those associated fiberglass boats on the Chris-Craft family tree) for your individual personal use, and by doing so help promote the good name of Chris-Craft, and help preserve, restore, and appreciate Chris-Craft boats. The main reference feature is the ever expanding MASTER INDEX File which contains what we believe to be the world's largest collection of documentation photos and technical information on the Chris-Craft Commander line of boats, (like these original brochure scans, featuring the iconic first 38 Commander styled by Fred Hudson, and many of the great Dick Avery renditions that followed) , (a huge collection of Chris-Craft 427 tuning and specification information), and a few words about how to use the forum.

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RESEARCH UPDATE .... it can be done !

October 7 2014 at 10:02 AM
Paul  (no login)

Response to Air pocket notion.........theory or real ?

UPDATE: here is a brief update for you; the conversion from standard Q intake to aftermarket standard GM style intake is totally possible, here are some issues.So far the only issues we have are clearance and steam venting.

Either you have it or you don't. In which case, if you don't have clearance and the height is a serious issuse, such as touching the underside of a cruiser fold down hatch (as opposed to a motor box that can easily be modified) then one must look for a very low profile aftermarket or stock iron intake to use.

Steam Venting:
The tapping solutions you have noted appear to be quite viable, so that is resolved. Any tapping into the intake area to reach the water passage can be routed to the stock location on the Q exhaust manifolds. (Why a concern about steam short....because we are placing the thermostat now at the low side of the motor, there is a chance for air bubbles and a hot spot, and this concern exists even with the stock Q motor, and you will note the small copper steam vent lines leading to the manifold, so we believe this is also necessary for the conversion because the condition is exacerbated).

We will assume the thermostat will bolt directly from the Q to any other GM or aftermarket intake manifold until proven wrong, and until such time we confirm this with an actual project,. (Late breaking news.......The Q manifold had thermostat bolt holes 3 1/2" apart. Standard Chevrolet is about 3 1/4". Could be made to work.)

With the revised thermostat location there is a need to get water back to the front of the motor. This could potentially be done along the top of the motor if it is kept clear of the linkage and other things. There will need to be a hands on look at the plumbing needs, and it seems there may be proper diameter hoses with bends that can come off the t-stat, and also off the pump, joined in the middle with a length of copper pipe. We'll see how that goes.

So it appears anyone out there faced with spending $1200 for a Q intake "because there are no other alternatives and the supply is limited" could very easily obtain a nice performance upgrade by converting to a superior flowing aluminum intake for $200, then getting a new #1409 Edelbrock marine carb for $320, a phenolic wedge for $40, and a 50,000 volt marine distributor from Performance Distributors (our friend Steve Davis, of Davis Unified Ignition, DUI) and still have money left over for some gaskets, a new flame arrestor, and a $100 or $200 dinner with friends.

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