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  #16 (permalink)  
Old 02-20-2013, 07:27 PM
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Not to sure if the OPs engine is a running engine at the moment. I think that is what he is trying to say , but he hasnt been back so I we dont have any way of knowing.
If he has a running 350 , the least expensive way to get a few more horses from it would be to put a Comp XE in it to help it with its breathing/anemia problem. Sure...A 350 isnt a desirable choice if you are going to build a complete engine. But if it runs good allready a cam upgrade would be a plus to help it out.
A 350 with a 2 barrel and a decent cam could be a fun daily driver and still be cheap enough to drive evryday.
Would I build one from a bare block....NO.
Drop a cam in for 30-40 more horses...any day of the week.

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Old 02-20-2013, 07:43 PM
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for what you'll pay to get a set rebuilt.. correctly..(new guides/etc)
you can get alum edelbrock heads for a little more..
that will run circles around those 48's
just an option..
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Old 02-20-2013, 07:57 PM
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A 350 poncho has a small bore. 3.875 in
The heads with the larger valves create a flow problem as the valve is too close to the cylinder and "shrouds" the valve decresing flow.
350 have chamfers at the top of the cylinder to help unshroud the valve and inprove flow.
I wouldnt spend much money for heads for a 350.
If the motor is running , i wouldnt do anything but a cam and some carb work. And some dizzy tuning.
Even milling the heads that are on it would raise the cost as you would need to make the valve train adjustable.
I have a good running 350 in my poncho. Its coming out this summer for a 389 replacement.
I am even questioning that...now that I have a 428.
I will mothball the 350 for anything I get in the future that may need an engine to be a driver.
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Old 02-20-2013, 08:05 PM
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Quote:
Originally Posted by LATECH View Post
A 350 poncho has a small bore. 3.875 in
The heads with the larger valves create a flow problem as the valve is too close to the cylinder and "shrouds" the valve decresing flow.
350 have chamfers at the top of the cylinder to help unshroud the valve and inprove flow.
I wouldnt spend much money for heads for a 350.
If the motor is running , i wouldnt do anything but a cam and some carb work. And some dizzy tuning.
Even milling the heads that are on it would raise the cost as you would need to make the valve train adjustable.
I have a good running 350 in my poncho. Its coming out this summer for a 389 replacement.
I am even questioning that...now that I have a 428.
I will mothball the 350 for anything I get in the future that may need an engine to be a driver.
I hear ya, BUT.. many a poncho guy has started with a 350 and then moved to a 400 or 389/455/421/428 ect.. I loved my 326.. it reved as far as the points would allow it.. cast rods should have left the building many times over.. but didn't.. what a fun engine.. just needed a lite car
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Old 02-20-2013, 08:17 PM
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My original 64 LeMans had the 326 in it. It ran good. I ran the snot out of that motor. I could float the valves pretty easy but it was a great car.
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Last edited by LATECH; 02-20-2013 at 08:18 PM. Reason: spelling
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