Can it be done?
#1
Can it be done?
68 400 engine small bore,long stroke with c heads. Can big valve c heads be ran on this engine without worrying about valve/piston clearance and valve/bore clearance? It's a low compression engine 9 to 1 originally a 2 barrel carb engine. Thanks. Steve
#4
OK you have the Turnpike cruiser option.
Unless you are the original owner of the car, it is really hard to tell what is truly original to a 44 year old car. My car has a numbers matching blue motor in it.
Is swapping heads the only mods you are going to do?
If everything else remains constant, is a .072 larger intake valve going to make cost effective difference?
I have the upgrade itch also, so I am having a mild street 455 built and pickling the numbers matching 400. To really confuse everyone I'll paint the 455 bronze, but I think the lakewood bellhousing is going to give it away!
Steve where are you located?
Unless you are the original owner of the car, it is really hard to tell what is truly original to a 44 year old car. My car has a numbers matching blue motor in it.
Is swapping heads the only mods you are going to do?
If everything else remains constant, is a .072 larger intake valve going to make cost effective difference?
I have the upgrade itch also, so I am having a mild street 455 built and pickling the numbers matching 400. To really confuse everyone I'll paint the 455 bronze, but I think the lakewood bellhousing is going to give it away!
Steve where are you located?
#5
I'm in central ct, I have the turnpike cruiser all original. I'm doing the heads cause I have bad valve guides but I have a set of big valve heads laying around. While I'm doin the heads I'm gonna do a cam,lifters,timing chain,push rods new springs and keepers. Cutlassefi is doin a roller cam lifters,etc for me, nothing crazy just wanna freshen the engine up a bit. Steve
#7
All G-block 400s have the same bore (3.890") and all came with C heads. All 442 G-block motors came with big valves, so yeah they fit just fine. Olds changed compression with the size of the dish in the piston - all C-heads have the same size chambers. Just have your existing heads machined for big valves.
#10
Gene,
I know.
I was trying to point out that you really don't know what previous owners have done. When I first saw the blue motor, I assumed a replacement 455 had made its way into the engine compartment. Upon further inspection I realized they must have rebuilt the original motor and repainted it the 455 blue.
Stevec Are you planning on using the stock rocker arms? I'm assumimg a four barrel and intake as well.
I know.
I was trying to point out that you really don't know what previous owners have done. When I first saw the blue motor, I assumed a replacement 455 had made its way into the engine compartment. Upon further inspection I realized they must have rebuilt the original motor and repainted it the 455 blue.
Stevec Are you planning on using the stock rocker arms? I'm assumimg a four barrel and intake as well.
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