waterhead

I'm curious, what is the intake runnner cc's and combustion chamber cc's on the 78 L-48 heads?

Thanks,
Kerry

QuickVet

i dont know but i would like to know to :confused:

45ACP

I believe that those are 882's.

If that is so --> 160cc intakes, 76cc combustion chamber.

Scott78

Well what I have is by casting number
for a #441 casting
PORT SIZE: 155
CHAMBER: 76cc
VALVE SIZE: 1.94 / 1.5
PRICE: N/A
FLOW@.100: 55 / 45
FLOW@.200: 110 / 80
FLOW@.300: 160 / 112
FLOW@.400: 194 / 127
FLOW@.500: 201 / 136
FLOW@.600: 203 / 139

For a #882 casting
PORT SIZE: 151
CHAMBER: 76cc
VALVE SIZE: 1.94 / 1.5
PRICE: N/A
FLOW@.100: 70 / 58
FLOW@.200: 125 / 108
FLOW@.300: 175 / 135
FLOW@.400: 204 / 141
FLOW@.500: 205 / 142
FLOW@.600: 206 / 142
Here's a page that list flow charcteristics
of popular Chevy SB and BB factory heads
and several aftermarket manufactures also. http://www.dw1977.cz28.com/photo2.html

Scott

Shark Racer

They're 462624s, actually. Specs say 75.5 combustion chamber for L-48, a bit over 76 for L-82.
Don't know about intake port, sorry.
-Steve