440 source super stealth heads
#1330777
11/04/12 07:06 PM
11/04/12 07:06 PM
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Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
racealittle
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
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Has anyone bought a set, looked at them critically, etc.?
I like the idea for a stock looking engine, but what has or can be done with these heads?
They have been out for a while now; looking for user or professional head porter reviews and opinions.
Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen!
Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!
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Re: 440 source super stealth heads
[Re: Tom_440]
#1330779
11/05/12 04:08 PM
11/05/12 04:08 PM
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Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
racealittle
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
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Quote:
Do a search on these. There are some haters but most folks are happy with them. They should be checked before installing (although many have run them out of the box). I have them on my very mild street 446 with no real porting and it dyno'd at about 470 hp and 530 tq.
I'm not asking about stealth heads; the inquiry is about the super steath heads that come bare and need a head porter/specialist to finish them.
They have been out a while now and I am looking for input.
Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen!
Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!
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Re: 440 source super stealth heads
[Re: racealittle]
#1330781
11/05/12 09:14 PM
11/05/12 09:14 PM
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Joined: Aug 2011
Posts: 2,864
Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,864
Pattison Texas
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been a while,been pretty ill,but the weather has cooled of some & finally got my flow bench & heads to the house,so i got some #s together so far,
these are the 440 super stealth & this is for a street motor,my testing cyl adapter is 4.250 bore diameter, i will machine it to 4.4 when i can get to it
otb .200 140
.300 202
.400 242
.500 256
.600 267
.700 267
OK opened the seat up a little & did a little combustion chamber work, worked on short side & made max wedge size i am stopping here cause i dont need more flow,this is a street engine build,@ .700 they flow enough to make 688 hp,my cam will be .650 lift. these heads really want a bigger valve but to do that the seats would have to be changed,flowing the head with no valve they flow 360 not saying they would flow that # with a bigger valve but the would definitely pick up some.
2.14 valve
.200 164
.300 217
.400 264
.500 290
.600 314
.700 335
.800 345
Last edited by csk; 11/05/12 09:26 PM.
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Re: 440 source super stealth heads
[Re: CSK]
#1330782
11/06/12 01:47 AM
11/06/12 01:47 AM
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Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
racealittle
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
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Thanks csk, did you get any results on the exhaust side?
Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen!
Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!
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Re: 440 source super stealth heads
[Re: racealittle]
#1330783
11/06/12 02:21 AM
11/06/12 02:21 AM
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Joined: Aug 2011
Posts: 2,864
Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,864
Pattison Texas
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not yet ,i will ck tomorrow & post results
1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5
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Re: 440 source super stealth heads
[Re: CSK]
#1330784
11/07/12 07:58 PM
11/07/12 07:58 PM
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Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
racealittle
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,263
Southwestern Ontario Canada
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Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen!
Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!
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