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Re: New best with the 408 but not without some issues [Re: 383man] #1833509
05/24/15 10:51 PM
05/24/15 10:51 PM
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Posts: 20,203
PA.
pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
"Little"John

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Originally Posted By 383man
Congrats on the new best ! I hope its no big problem with your oil pressure. Ron



Thanks Ron. I have Matts heads almost done so hopefully I can dive into mine later tomorrow.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1833591
05/25/15 12:22 AM
05/25/15 12:22 AM
Joined: Jun 2003
Posts: 9,225
Charleston
S
sixpackgut Offline
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Charleston
How hot does it get during a pass? Nice gains


Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
Re: New best with the 408 but not without some issues [Re: sixpackgut] #1833612
05/25/15 12:59 AM
05/25/15 12:59 AM
Joined: Feb 2005
Posts: 20,203
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pittsburghracer Offline OP
"Little"John
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Originally Posted By sixpackgut
How hot does it get during a pass? Nice gains
. I only got info from one pass as my trigger switch was messing up. I gained about 6 degrees during that pass and was reading 5-5.5 on the O2. I have an 850 alcohol card with 150 jets all around. I am going to try leaning it out some more if all checks out ok. A couple of plugs were wet when I checked hem last night. This thing came alive about 1000 foot like it cleaned the plugs. If all looks well I will pull the oil pan and install a HV pump


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1833779
05/25/15 12:03 PM
05/25/15 12:03 PM
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt Offline
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Good luck figuring it out, mine would be 25 psi hot with 10-30 oil. It ran for five years that way. I switched to 15-40 and it would be 30-32 at idle.


Brett Miller W9 cnc'd heads
STR Chassis fabraction
Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1833805
05/25/15 12:46 PM
05/25/15 12:46 PM
Joined: Sep 2004
Posts: 6,906
IL, Aurora
A
ademon Offline
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Is 20/25 psi that bad at idle??

Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1833815
05/25/15 01:04 PM
05/25/15 01:04 PM
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Posts: 20,203
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pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
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Mine right now is lower than that after a pass. I'll get her up some


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1833842
05/25/15 01:38 PM
05/25/15 01:38 PM
Joined: Jan 2007
Posts: 8,043
Mt Morris Michigan
mopar dave Offline
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I had 55psi oil pressure going down track and 20@idle with my 408 using hv melling and 15/50 amsoil. no tubing. maybe 50 passes, some street in 8yrs run time. bearings were iffy, but no major failure.
when you tubed your block, did you block the oil passage to the other bank/lifter galley? I had an issue with my block and finding the correct lifter that wouldn't uncover the oil galleys while the lifter was on the nose of the cam. the issue was not with the oil band, but the skirt right above the roller/wheel. I tried crane race lifters at $880 and comps at $550. both had tall skirts and would dump oil on lift. had to use PBM/Morel lifters. the dr/side bank was the worst. hope this helps

Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1833867
05/25/15 02:06 PM
05/25/15 02:06 PM
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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WHITEDART Offline
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WHITEDART  Offline
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bean town ....Ca
Haulin the mail for sure what does it weigh and what was the air like that day


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: New best with the 408 but not without some issues [Re: mopar dave] #1833878
05/25/15 02:20 PM
05/25/15 02:20 PM
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Posts: 20,203
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pittsburghracer Offline OP
"Little"John
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Originally Posted By mopar dave
I had 55psi oil pressure going down track and 20@idle with my 408 using hv melling and 15/50 amsoil. no tubing. maybe 50 passes, some street in 8yrs run time. bearings were iffy, but no major failure.
when you tubed your block, did you block the oil passage to the other bank/lifter galley? I had an issue with my block and finding the correct lifter that wouldn't uncover the oil galleys while the lifter was on the nose of the cam. the issue was not with the oil band, but the skirt right above the roller/wheel. I tried crane race lifters at $880 and comps at $550. both had tall skirts and would dump oil on lift. had to use PBM/Morel lifters. the dr/side bank was the worst. hope this helps



This is the 2nd major rebuild with this same block and its been tubed since new. The other side is blocked with a pipe plug. Both build had standard oil pumps since I had the issue with the high volume pump years ago. The solid lifter engine had LOTS of runs during those 3 years and the bearing looked pretty good but I did have the crank polished. The roller lifter in this engine are solid body Comp Cams.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New best with the 408 but not without some issues [Re: WHITEDART] #1833884
05/25/15 02:29 PM
05/25/15 02:29 PM
Joined: Feb 2005
Posts: 20,203
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pittsburghracer Offline OP
"Little"John
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Originally Posted By WHITEDART
Haulin the mail for sure what does it weigh and what was the air like that day


Air was 1550 corrected altitude at 6:45 pm and got better but during the long oil down clean-up the humidity started jumping up. My Duster with me in the seat is right around 2800-2850 pounds. I'm leaning out the carb right now from 150's to 146 jets. I am also going to install a set of 3922 Autolite plugs as it was suggested I try 3911's. I ran the 3922's for years. Leak-down on the driver-side is so-so and I want to fire it up and do another leak-down test. Also changing out the needle and seat in the carb as it sat all Winter. Alcohol has a way of ruining good parts.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1833931
05/25/15 03:30 PM
05/25/15 03:30 PM
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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WHITEDART Offline
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bean town ....Ca
I Like the Ar3932 or even the 35 seems to cold starts better on e85 .with no et change


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: New best with the 408 but not without some issues [Re: WHITEDART] #1833938
05/25/15 03:37 PM
05/25/15 03:37 PM
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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WHITEDART Offline
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You have one of the fastest eddy head smb I have seen...hats off to you and your hard work


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: New best with the 408 but not without some issues [Re: WHITEDART] #1834015
05/25/15 05:29 PM
05/25/15 05:29 PM
Joined: Feb 2005
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pittsburghracer Offline OP
"Little"John
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Originally Posted By WHITEDART
You have one of the fastest eddy head smb I have seen...hats off to you and your hard work



Thanks but lots of guys have these heads working pretty good now. This set still has the stock rocker-pushrod location and I hope to move it over for some much needed area on the next set I do.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1834032
05/25/15 06:12 PM
05/25/15 06:12 PM
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Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Romeo MI
So what have you found out about your oil pressure
wave

Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1834059
05/25/15 07:13 PM
05/25/15 07:13 PM
Joined: Jan 2007
Posts: 8,043
Mt Morris Michigan
mopar dave Offline
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ok, just thought I would post up my experience with internal oil leaks that can happen. you seem to have a different issue, but 55# down track don't sound awful bad.

Re: New best with the 408 but not without some issues [Re: WHITEDART] #1834104
05/25/15 08:01 PM
05/25/15 08:01 PM
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Pa
Hot 340 Offline
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Originally Posted By WHITEDART
You have one of the fastest eddy head smb I have seen...hats off to you and your hard work
Yeah, I would like John to do my old brodix junk but just cant find the heart to mess with them anymore.

Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1834181
05/25/15 10:09 PM
05/25/15 10:09 PM
Joined: Jan 2007
Posts: 8,043
Mt Morris Michigan
mopar dave Offline
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congrats on the new best. sounds like it makes more steam than my 408 did with ported indy heads.

Re: New best with the 408 but not without some issues [Re: mopar dave] #1834192
05/25/15 10:20 PM
05/25/15 10:20 PM
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pittsburghracer Offline OP
"Little"John
pittsburghracer  Offline OP
"Little"John

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Originally Posted By mopar dave
congrats on the new best. sounds like it makes more steam than my 408 did with ported indy heads.



Thanks Dave. I now have a set Of Indy heads sitting here that were previously ported and flow pretty good on the intake side but the exhaust numbers are low and very turbulent. I hope to get maybe 15-20 more on the intake side too as the air speed is maxing out my gauge at 401fps the whole way across the short-turn. That tells me its begging for more area.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New best with the 408 but not without some issues [Re: MR_P_BODY] #1834204
05/25/15 10:35 PM
05/25/15 10:35 PM
Joined: Feb 2005
Posts: 20,203
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pittsburghracer Offline OP
"Little"John
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"Little"John

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Originally Posted By MR_P_BODY
So what have you found out about your oil pressure
wave




Holy heck oldtimer its almost 8:30pm and I didn't eat yet. Take it easy on me. OK after my 3 mile morning walk I removed my driver side spark plugs (3911's) and installed (4) 3922's as that was all I had. Changed the jets from 150's to 146's and installed 2 new needle and seats in the carb, filled the tank and fired it up. 70 pounds of pressure on start-up. Ran for about 20 minutes with my lean out ball valve open and got it up to 165 degrees. Smoke out of the driver side seemed much better but pressure was down to 20 pounds. Shut it down and drained the oil and cut the Wix racing filter apart for checking. Fund a few shinny flakes but i mean a few. Oil seemed somewhat alcohol contaminated to me. I am going to find some 10-40 or maybe even 20-50 tomorrow and try that before I remove the pan to change the oil pump. Most of the leak-down numbers are in 6-8 percent but a couple are 15%. Will do compression test after I change the oil.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: New best with the 408 but not without some issues [Re: pittsburghracer] #1834251
05/25/15 11:58 PM
05/25/15 11:58 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Originally Posted By pittsburghracer
Originally Posted By MR_P_BODY
So what have you found out about your oil pressure
wave




Holy heck oldtimer its almost 8:30pm and I didn't eat yet. Take it easy on me. OK after my 3 mile morning walk I removed my driver side spark plugs (3911's) and installed (4) 3922's as that was all I had. Changed the jets from 150's to 146's and installed 2 new needle and seats in the carb, filled the tank and fired it up. 70 pounds of pressure on start-up. Ran for about 20 minutes with my lean out ball valve open and got it up to 165 degrees. Smoke out of the driver side seemed much better but pressure was down to 20 pounds. Shut it down and drained the oil and cut the Wix racing filter apart for checking. Fund a few shinny flakes but i mean a few. Oil seemed somewhat alcohol contaminated to me. I am going to find some 10-40 or maybe even 20-50 tomorrow and try that before I remove the pan to change the oil pump. Most of the leak-down numbers are in 6-8 percent but a couple are 15%. Will do compression test after I change the oil.


I was just curious.. I have a belief that someone
is changing the hardness of the springs.. as soon
as the temp comes up the pressure starts to drop..
it still shows fine at 70 cold.. even with thin oil
good luck... congrats on the NB
wave

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