Team,

Intake Manifold (Stock Aluminum )84-86 307

While shopping at the local junk yard outside of Carson, I noticed an aluminum intake on a Buick, that looked stock. Moreover, it looked like my Olds intake. I pulled it and it is.

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I am rebuilding my 68 350 and want an opinion.
Q. Is it worth cleaning up, or should I just buy a 3711(1)?

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Car: 1980 Olds Cutlass Supreme

Engine:
1968
350 #5 Heads
Electronic Distributor
Q-Jet 800

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Related article:

A4 Stock Olds Aluminum Intake
http://performanceolds307.tripod.com/id29.html

 

If it is an A4, go ahead and use it if you want to save a few dollars.

If it is an A5, I wouldn't bother. The a5 intkae was 1985-newer.

I don't think the a4 is any better than your stock iron manifold though, and if you have a divorced choke setup on your carburetor, it won't have that provision.

 

Agree, if it is a 800 cfm Qjet, it should be a late 70's model with hot air choke. I always convert them to electric. Not sure why Olds stayed with the hot air till the bitter end.

 

Team, It is an A5.......
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The Q-jet is off a Caddy.
It runs very rich, MUCH carbon build up, soI plan to go down to a 600-750.

Thoughts??

 

All you need to do is tune the Qjet you have and it will work like a champ. The Qjet may seem big at 800, but because of the way it works it will give you the drivability of a smaller carb. Remember, they had 800 Qjets on 307 smogger 80's engines. It's all in how they're set up. Taking a worn out Qjet off of engine X isn't usually going to work well on engine Y untill you rebuild it and do some re-jetting/tuning.

 

Look at the ports on the a5, they're way smaller than your stock manifold. Throw the a5 in the trash.

 

DoubleV, Q-jet, tracking!
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Walking the dog last night I had the revelation, tune it up, the front hald is economy, back half, tighten the spring a little more... " the motor draws, so make it a little tighter" kind of thing.
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Thoughts?

Th

 

Intake Manifold- A5 v.s. 2711/3711
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"Throw that A5 in the trash"
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I'll have to keep it until I locate an A4, equal or better....

Thanks all for your input.