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-   -   DOHC on CHEVY 350? POSSIBLE? (http://www.hotrodders.com/forum/dohc-chevy-350-possible-172299.html)

XeroVolume 01-31-2010 05:45 PM

DOHC on CHEVY 350? POSSIBLE?
 
Just for fun, I was wondering what all might be involved in running Dual Overhead Cams or even a Single Overhead Cam with an early model Chevy 350 CID engine. Has this ever been attempted? Is it even possible?

XNTRCI-T 01-31-2010 05:51 PM

Never mind. :rolleyes:

zildjian4life218 01-31-2010 06:00 PM

I have read about a couple companies that have made heads or maybe i am thinking 3 or 4 valve heads. But either way they are big $$$$$$$$ though. Do a google search for it.

TTFiveOhRanger 01-31-2010 06:30 PM

If I was a millionaire I may try that for fun. Maybe there is a 4cyl gm motor with the same head bolts, water passages, and bore spacing? I'm interested now... If one of the big three just used the same spec from half a v8 for an inline 4 I think it would be GM. If you want you could check head gaskets at the auto parts store? Head bolts are a biggie.. water passages and oil can be routed for a one off. I would start off with a old 2.5 inline 4 and compare the head gaskets. Got a friend at the auto parts store? or go in when they are slow and keep comparing head gaskets?

TTFiveOhRanger 01-31-2010 06:31 PM

What is funny is a volvo DOHC will fit on a 2.3 ford motor with some modification. It really isn't that horrible...

zildjian4life218 01-31-2010 06:37 PM

Quote:

Originally Posted by TTFiveOhRanger
What is funny is a volvo DOHC will fit on a 2.3 ford motor with some modification. It really isn't that horrible...

lol thats strange. I have read that the GM LS series heads will bolt onto a ford windsor 302

TTFiveOhRanger 01-31-2010 06:48 PM

That is just plain hilarious if it is true..

TTFiveOhRanger 01-31-2010 06:52 PM

Check this out! http://forums.hybridz.org/showthread.php?t=158418

TTFiveOhRanger 01-31-2010 07:07 PM

Those guys were talking about filling in block areas and taping for head bolts! :spank: That would be a serious feat to weld that to work without cracking and or warping..?

ericnova72 01-31-2010 07:21 PM

Not Overhead Cam but 4-valve cylinder head for SBC, BBC, SBF at www.araoengineering.com Nelson Racing Engines has a video in their gallery of Arao heads on a supercharged 406 SBC that is something to see www.nelsonracingengines.com Heard through the net that delivery is very slow from Arao.

Moser Engineering did a OHC conversion on the SBC in the 70's.

zildjian4life218 01-31-2010 07:58 PM

I forgot about the LT5!! 32 valve DOHC 350! Ugh can you imagine doing a valve job on those heads.

Rickracer 01-31-2010 08:16 PM

I remember some time, I think the mid 80s, there was a company making a DOHC 32 valve conversion heads for SBCs, I can't for the life of me remember the name of the company right at the moment, (CRS disease, :D ), but if I do, I'll post it, :cool:

Blazin72 01-31-2010 08:28 PM

Quote:

Originally Posted by zildjian4life218
I forgot about the LT5!! 32 valve DOHC 350! Ugh can you imagine doing a valve job on those heads.

The LT5 was a completely different, one-off design though. It is more closely related to the Northstar and Aurora V8s that came after it than with the more common Gen I and Gen II SBC V8s.

gas_guzzler 01-31-2010 09:23 PM

Do a search for Weslake chevrolet heads. I saw a pair of these for sale a couple years ago, pretty sure they were 4 valves per cylinder. Very expensive and rare. I think they made ford v8 ones too?

sam_bo3 02-01-2010 01:39 AM

ENGINE

350 c.i. V-8 ZR1 LT5 lotus designed and bult by mercruy marine.

C.R.
11.0:1

Horsepower
375@5800

Torque
370@4800

Acceleration
Sec.

0-60 mph
4.9

Standing 1/4 mi.
13.4@109 mph


It is amazing how much performance has changed in last 20 years. It only cost $58,995. What would that be in inflated dollars.


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