302 Cast Iron Head Flow Numbers
03-17-2007, 12:08 AM
#1
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Join Date: Jan 2007
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Posts: 31
302 Cast Iron Head Flow Numbers
Does anyone know what the combustion chamber size is on a 1986 Ford F-150 with a 5.0? Also what is the combustion chamber size on the Mustangs around that same year? If anyone has all the flow numbers for both vehicles that would be great!
03-17-2007, 12:36 AM
#5
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Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
RE: 302 Cast Iron Head Flow Numbers
just did some research and updated my original post.... and yeah the E6's are junk.
funny though, i (very cheaply) built a 302 with a 218/228 .471/.471 cam and the E6SE heads with pistons a 78 302 and a dual plane ford aluminum intake from a early 80's stang (which had ports as small as the 255's [:@][:'(]
[&:]). stock exhaust manifolds and single exhaust out the back, (and a holley 600 4barrel from a ford van in the junk yard 
). i'll tell you what you would think it woulda been the biggest dog ever - and it was over 4500-5000 rpms..... but off the line that thing would absolutely destroy the back rubber. very surprizing but damn damn damn that thing was insane off the line.
funny though, i (very cheaply) built a 302 with a 218/228 .471/.471 cam and the E6SE heads with pistons a 78 302 and a dual plane ford aluminum intake from a early 80's stang (which had ports as small as the 255's [:@][:'(]
[&:]). stock exhaust manifolds and single exhaust out the back, (and a holley 600 4barrel from a ford van in the junk yard ). i'll tell you what you would think it woulda been the biggest dog ever - and it was over 4500-5000 rpms..... but off the line that thing would absolutely destroy the back rubber. very surprizing but damn damn damn that thing was insane off the line.
03-17-2007, 12:50 AM
#6
5th Gear Member
Join Date: Jul 2004
Location: Westminster, MD
Posts: 4,343
RE: 302 Cast Iron Head Flow Numbers
ORIGINAL: my77stang
just did some research and updated my original post.... and yeah the E6's are junk.
funny though, i (very cheaply) built a 302 with a 218/228 .471/.471 cam and the E6SE heads with pistons a 78 302 and a dual plane ford aluminum intake from a early 80's stang (which had ports as small as the 255's [:@][:'(][&:]). stock exhaust manifolds and single exhaust out the back, (and a holley 600 4barrel from a ford van in the junk yard ). i'll tell you what you would think it woulda been the biggest dog ever - and it was over 4500-5000 rpms..... but off the line that thing would absolutely destroy the back rubber. very surprizing but damn damn damn that thing was insane off the line.
just did some research and updated my original post.... and yeah the E6's are junk.
funny though, i (very cheaply) built a 302 with a 218/228 .471/.471 cam and the E6SE heads with pistons a 78 302 and a dual plane ford aluminum intake from a early 80's stang (which had ports as small as the 255's [:@][:'(]
[&:]). stock exhaust manifolds and single exhaust out the back, (and a holley 600 4barrel from a ford van in the junk yard ). i'll tell you what you would think it woulda been the biggest dog ever - and it was over 4500-5000 rpms..... but off the line that thing would absolutely destroy the back rubber. very surprizing but damn damn damn that thing was insane off the line.
03-17-2007, 12:51 AM
#7
Thread Starter
Join Date: Jan 2007
Location:
Posts: 31
RE: 302 Cast Iron Head Flow Numbers
The engine I am working with has:
1986 E-150 stock bottom end 90,000 miles never been rebuilt, and stock heads with stock springs, and valves.
Holley Contender single plane intake manifold
Demon 625 CFM 4 barrel carburetor with vacuum secondaries
Crane Energizer 272/272, Lift .533/.533 hydraulic flat tappet cam
Its not the best setup, but its what was laying around the shop. All I really want to do from this point is to replace the cast iron heads for aluminum ones to save some weight, and to maybe pick up a little horsepower.
1986 E-150 stock bottom end 90,000 miles never been rebuilt, and stock heads with stock springs, and valves.
Holley Contender single plane intake manifold
Demon 625 CFM 4 barrel carburetor with vacuum secondaries
Crane Energizer 272/272, Lift .533/.533 hydraulic flat tappet cam
Its not the best setup, but its what was laying around the shop. All I really want to do from this point is to replace the cast iron heads for aluminum ones to save some weight, and to maybe pick up a little horsepower.
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