My used Eagle heads...on the bench, as delivered.
#2313359
05/30/17 01:27 AM
05/30/17 01:27 AM
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Joined: Aug 2003
Posts: 3,245 Between a rock & a hard place
cudadoug
OP
master
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OP
master
Joined: Aug 2003
Posts: 3,245
Between a rock & a hard place
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First Gen 3 parts I've ever owned, tossed them up on a flow bench today. Untouched, completely stock, as far as I can tell. Testing on a 4.00" bore. Wow...
259 @ .400 267 @ .450 271 @ .500 286 @ .550 292 @ .600 298 @ .650 301 @ .700
The big surprise was the valve springs. Could these be stock??
126# closed at installed height 350# at .550 open Looks they are done at .585, but seems pretty stout for an OE spring.
Last edited by cudadoug; 05/30/17 01:27 AM.
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Re: My used Eagle heads...on the bench, as delivered.
[Re: cudadoug]
#2313388
05/30/17 02:51 AM
05/30/17 02:51 AM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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Your numbers are a little lower than what most of us get. Most of us have hit 300 by .5 and stays the same at .6
Ive went rounds before over the valve springs. When i tested them, the pressures were better than pac 1218s i think i had at the time.
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: My used Eagle heads...on the bench, as delivered.
[Re: cudadoug]
#2313645
05/30/17 04:46 PM
05/30/17 04:46 PM
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Joined: Feb 2011
Posts: 4,302 Nebraska
72Swinger
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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Seeing what the heads are capable of was one of the big reasons I jumped off the BB ship. IMO opinion they are the best engines to use in a NA 600-700hp pump gas application period.
Mopar to the bone!!!
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Re: My used Eagle heads...on the bench, as delivered.
[Re: cudadoug]
#2314509
06/01/17 11:29 AM
06/01/17 11:29 AM
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Joined: Jan 2006
Posts: 1,400 Trumbauersville PA
ric3xrt
pro stock
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pro stock
Joined: Jan 2006
Posts: 1,400
Trumbauersville PA
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259 @ .400
126# closed at installed height 350# at .550 open Looks they are done at .585, but seems pretty stout for an OE spring.
done at .585 ...Coil bind or clearance ?
Truth has no agenda, but those with an agenda make their own truth. Some of us are so open minded they only see their View
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Re: My used Eagle heads...on the bench, as delivered.
[Re: ric3xrt]
#2314531
06/01/17 12:24 PM
06/01/17 12:24 PM
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Joined: Aug 2003
Posts: 3,245 Between a rock & a hard place
cudadoug
OP
master
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OP
master
Joined: Aug 2003
Posts: 3,245
Between a rock & a hard place
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259 @ .400
126# closed at installed height 350# at .550 open Looks they are done at .585, but seems pretty stout for an OE spring.
done at .585 ...Coil bind or clearance ? Coil bind.
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Re: My used Eagle heads...on the bench, as delivered.
[Re: cudadoug]
#2314897
06/01/17 11:52 PM
06/01/17 11:52 PM
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Joined: Jan 2003
Posts: 5,484 SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,484
SoCal
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New entry radius that fits...
299 @ .500 303 @ .550 312 @ .600 313 @ .650 Yep, with slightly larger valves, multi angle valve job, bowl cleanup and port massage they will go mid 330's real easy...and as much as 319@ .500 lift! Easy stuff!!
Brian Hafliger
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Re: My used Eagle heads...on the bench, as delivered.
[Re: Medlock51]
#2321394
06/15/17 12:44 AM
06/15/17 12:44 AM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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What's the biggest lift you can get with stock length valves? What springs will do the job? Specs? 650 is about max with stock rockers. For eagle head alot are using psi1511 or 1515
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: My used Eagle heads...on the bench, as delivered.
[Re: cudadoug]
#2406286
11/20/17 12:18 PM
11/20/17 12:18 PM
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Joined: Jun 2005
Posts: 2,776 Ontario Canada
MattW
master
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master
Joined: Jun 2005
Posts: 2,776
Ontario Canada
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Back at playing with these. Holy smokes...we're not even porting just smoothing what is there and trying different valve jobs...
.550 = 311 cfm .600 = 321 .650 = 326
Wow. Sorry but I'm late to the G3 party so...WOW! Been saying it for years!!! Dollar for dollar you CANNOT beat the g3 layout. Easy to make power at a much lower stress engine level. BIGGEST thing is the availability of cheap parts! Matt
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