C8ae-h
Post Fiend
Joined: Feb 2000
Posts: 5,130
Likes: 8
From: Brea CA
Don't have any numbers on that but here are flow numbers for some stock heads:
C4AE-G
Lift Intake Exhaust
.200 130 111
.300 180 135
.400 220 155
.500 236 165
C8AE-H
Lift Intake Exhaust
.100 63 46
.200 114 88
.300 168 121
.400 187 142
.500 202 139
.600 207 142
Stock Medium Risers
Lift Intake Exhaust
.100 82 61
.200 156 107
.300 195 147
.400 232 177
.500 259 190
.600 260 198
Stock Brocks
Lift Intake Exhaust
.100 81 56
.200 149 112
.300 185 148
.400 222 183
.500 252 206
.600 258 219
DOVE
Lift Intake Exhaust
.100 84 59
.200 154 102
.300 193 187
.400 237 199
.500 272 223
.600 303 236
And here are flow numbers of some ported D2TE-AA heads with 2.19 / 1.73 valves, they made 400hp in a 428 on the network54 board.
Lift Intake Exhaust
.100 73 59
.200 148 107
.300 213 153
.400 239 180
.500 245 191
.600 248 194
C4AE-G
Lift Intake Exhaust
.200 130 111
.300 180 135
.400 220 155
.500 236 165
C8AE-H
Lift Intake Exhaust
.100 63 46
.200 114 88
.300 168 121
.400 187 142
.500 202 139
.600 207 142
Stock Medium Risers
Lift Intake Exhaust
.100 82 61
.200 156 107
.300 195 147
.400 232 177
.500 259 190
.600 260 198
Stock Brocks
Lift Intake Exhaust
.100 81 56
.200 149 112
.300 185 148
.400 222 183
.500 252 206
.600 258 219
DOVE
Lift Intake Exhaust
.100 84 59
.200 154 102
.300 193 187
.400 237 199
.500 272 223
.600 303 236
And here are flow numbers of some ported D2TE-AA heads with 2.19 / 1.73 valves, they made 400hp in a 428 on the network54 board.
Lift Intake Exhaust
.100 73 59
.200 148 107
.300 213 153
.400 239 180
.500 245 191
.600 248 194
Last edited by BB; Oct 4, 2003 at 11:37 PM.
Cargo Master
Joined: Aug 2000
Posts: 2,931
Likes: 12
From: SW Michigan
cylinderhead flow
Randy, don't give up on your C8AE-H heads. They are very capable. Look at the Flow figures for the ported D2's- the D2TE-AA head has EXACTLY the same ports as your C8AE-H heads do. So if you ported them, you'd get the same results. Now look athe some of the heads you are comparing things too- the doves and the medium risers are usually thought of as 427 only, because the big 2.19/1.73 won't fit the smaller bores. And keep in mind the edelbrock heads everybody is running are 'Brock's 3 rd design.....the first 2 E-brock designs made less power than- are you ready- ported C8AE-H heads. Other than saving a bit of weight, I really don't think aluminum heads are worth the money. You can get equal performance, or better, by porting out a set of iron heads. If you are going to put them on a 390, you should have the 2.09/1.65 valve sizes put in. Run hard seats under the exhaust. If you want them ported by someone who knows what he is doing, look up Dennis Carrico. I think he is out west somewhere....He has a web site, DSC Motorsprt, with prices and such. DF
Thread Starter
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Posting Guru
Joined: Jul 2003
Posts: 1,268
Likes: 0
From: Eureka, Ca.
I have a set of D2TE-AA heads also, which one would you consider to be better. Also the ported D2TE-AA have the 2.90 and 1.73 valves. Does anyone know what they would flow with CJ valves?
Post Fiend
Joined: Feb 2001
Posts: 6,624
Likes: 8
From: Missouri
Here are some numbers for some ported ebrocks. THey were ported by Hi Flow performance.
Lift Intake Exhaust
.300 201 189
.400 244 220
.500 286 239
.600 306 257
.650 315 266
.700 321 271
Lift Intake Exhaust
.300 201 189
.400 244 220
.500 286 239
.600 306 257
.650 315 266
.700 321 271
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From: Eureka, Ca.
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Posting Guru
Joined: Jul 2003
Posts: 1,268
Likes: 0
From: Eureka, Ca.
the CJ's are 2.09 intake and 1.66 exhaust. As I understand it. the Dove use the 2.19 intake and 1.73 exhaust valves. they will only work with the 427 (4.23")or 428 bore (4.13").Someone correct me if I am mistaken.
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Posting Guru
Joined: Jul 2003
Posts: 1,268
Likes: 0
From: Eureka, Ca.
Nothing , I just happen to have some laying around. It's just cheaper to put CJ valves in them and have them ported than buying new edelbrock's or Dove's. Just trying to get enough info to get the most bang for my buk..