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Cesar Ruvalcaba 01-31-2007 08:32 AM

Engine heads
 
i have just purchased a 4 bolt 350 block (3970010) with modern heads (#14102193) the book list 1.9" to 1.5". what does this unit of measure represent? does anybody know how many cc? will this work well on my block? i looking for smooth performance but want to get the best out of my block. please advise.

johnnya 01-31-2007 10:05 AM

From Mortec.com:
"14102193...87-up...305/350......1.94"/1.5" valves"
(1.94"diameter intake valve head, 1.5" diameter exhaust valve head)

No combustion chamber volume was listed, but I'd think they're somewhere in the 64CC range if they were used on 305's & 350's.
JA

Cesar Ruvalcaba 01-31-2007 10:44 AM

Will this heads provide enough for this engine? also, can you provide some information on cc. the higher the cc the better performance etc??. what is the compression affect on heads.

Hippie 01-31-2007 12:22 PM

Those are the "swirl port" heads used on Throttle Body Injected 305's and 350's. They are "okay" for a daily driver or cruiser but are not a great high perfromance head especially above about 4,000 RPM. Good heads for a heavy car or truck, they should deliver good throttle response and fuel economy if used with a near stock cam and 4 barrel intake. They have 64cc combustion chambers so they need a dished piston in a 350 to keep compression down. The engines they came on had electronic fuel injection and computerized timing with knock sensors so they could get by with higher compression.

Cesar Ruvalcaba 01-31-2007 01:53 PM

I plan on using this heads on a older block (67-70). i will put this engine on a 69 Malibu. because this are newer heads, can i still use they on this block?. i do use my Malibu as a daily driver. no high performance yet.

BOBCRMAN@aol.com 01-31-2007 05:55 PM

They will bolt to your block. But you must use an 88 or later style intake manifold.

Cesar Ruvalcaba 02-01-2007 10:18 AM

okay i think i got most of my questions answer regarding heads. one more advise from you experts out there. I had a 283 block rebuilt about 2 years ago with 350 parts. i did not know it was a 283 until i had completed the rebuilt and installation and all the parts where purchased for a 350 unknownly. i just purchased a rebuilt 4-bolt main 350 long block. due to shortage in funds, i plan on using my accesseries which i used on the 283 for the mean time. accesseries inlcude, lifters, push rods, oil pump and distributor. the distrubutor is equipped with Frame Trower equipment. Should i proceed with my plans or should i cancel and wait.

xntrik 02-01-2007 02:25 PM

Quote:

Originally Posted by Cesar Ruvalcaba
okay i

I had a 283 block rebuilt about 2 years ago with 350 parts. i did not know it was a 283 until i had completed the rebuilt and installation and all the parts where purchased for a 350 unknownly.

.

How did you get 350 parts into a 283 block?

I believe that you are mistaken.

Cesar Ruvalcaba 02-01-2007 02:40 PM

No, bought the parts at the local autoparts. at the time, i though my block was a 350 so i requested 350 parts. when the engine was complete and operational i noticed i did not have the power i should have an a 350 so i inquire using the engine block id number and to my disappointment, found out the block is a 283. all the parts fit well and the engine runs smooth, but no where near the power of a 350. very low torque. you might wonder why i did not know, it is because i had just purcharsed the car from a friend. the car had 350 emblems which mislead me.


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