Intake single 4 barrel

[61 belair]

Question guys I have a 348 and I’m putting some stock 817 heads on it but my stock 348 ports are smaller could someone recommend a good intake for this I’m just not that familiar with the port size differences in the w engines , but learning a lot from all you guys, thanks in advance!!

 

[La Hot Rods]

Do you have a intake now?
They made small port heads, large port and then the Z11 stuff.
The large port heads would be the 690 and 583 heads.

 

[61 belair]

I have a stock 348 intake

 

[La Hot Rods]

That should fit the 817 heads.

 

[61 belair]

My stock ports measure about 1.94 and heads ports measure about 2.20 I’m just unsure about it

 

[61 belair]

These are 340 hp heads if that makes a difference

 

[61 belair]

It may just be me being too cautious like I said I’m not to familiar with these .

 

[61 belair]

Thanks for your help sir , I really appreciate your time !!

 

[La Hot Rods]

Maybe look for a 340 hp intake or a small port Edelbrock intake.

 

[61 belair]

Thanks for your help !

 

[425/409ER]

Just use the Lo-Po 409 340hp intake, just about the best cast iron 4bbl intake ever made for the W-engine, well except for the tri-power one.
You can use an adapter plate on the 340hp one and run a Holley if you like or a good 750 Eddy or Carter carburetor.

 

[61 belair]

Thanks sir

 

[1964SuperStocker]

Can't beat the flow of a new Edelbrock small port intake unless you want to try a Canadian flavored single plane intake which may hold the best flow to this point. I'm personally on a journey to create (for the masses) 3D printed intakes for just these engines to begin with. Once production has started on these then we will switch to other odd ball engine makes. My first single plane medium rise intake has already run my 348 stroker 434ci. It currently has 690 large port heads but the idea from day one is make small ports because there are so few new choices. You either go Edelbrock or find vintage. Making one from scratch is pretty labor intensive. We fired up the first W motor engine with a 3D printed intake last year and have been working as fast as we can with day jobs to get these ready to print for everyone who wants one.
Don't wait for me to get these 3D Carbon Fiber Nylon intakes ready for everyone, get out and have fun now. And yes we had to blow it up after it ran because if we didn't then someone else would and not be happy. Pop-off plate like a blower is an easy fix for anyone that may have a backfire.

 

[409Kid]

Now isn’t that special !!!

 

[Gliderider06]

Edelbrock RPM intake is the best for small ports if you want a performance gain.

 

[Tom Kochtanek]

GM used casting # 3830831 for those 817 heads back in the day, and that new 340 horse intake for 1963 used the Rochester 4 barrel up top if I remember correctly. Might have one laying around if you need one.

Cheers! TomK

 

[61 belair]

Thanks sir ,may have to take you up on that!

 

[oldskydog]

My stock ports measure about 1.94 and heads ports measure about 2.20 I’m just unsure about it

Are those ports or valve measurements?

 

[61 belair]

Ports , thats just a close measurement not exact