Re: Dragula's Quest for the 5's....on Pump Gas
[Re: BradH]
#2622609
02/17/19 05:36 PM
02/17/19 05:36 PM
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Joined: May 2004
Posts: 12,418 Taxes & Virus's R-US, NY
Dragula
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And so the upgrades are starting to come together...Heads will stay the same for now...My next build is hopefully a procharger motor... You're leaving a significant amount of power on the table by not spending any money on the heads. I guess I don't understand what your goal is, since it seems to have changed from the original post. 5's is still the goal ....We weren't far off last year, and with a burnt head gasket and blown header tube, there should be some power left on the table. But yes, heads were what we originally wanted to do, but I think we will change it up more next year and with a procharger, we don't need super good heads. Money was the other decision. New heads were outside the budget, and the porting quotes I got seemed pretty high to me. So we went with new pistons and head gaskets to get a little closer to max compression. We will be starting the season on 50/50 race fuel and getting everything dialed in from there.
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: tubtar]
#2622614
02/17/19 05:42 PM
02/17/19 05:42 PM
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Joined: May 2004
Posts: 12,418 Taxes & Virus's R-US, NY
Dragula
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Please tell me you don't use that air filter on it. 14 X 4 " should be minimum. I'd even look at a 6" tall element if you have to run a filter. Were I am pitted its like a sandbox and I have fenderwell headers that kick all that stuff up. I originally bought that to fit the Hemi, but I will have cut the intake down or switch intakes for it to fit the hemi. So, I have not raced the Duster with an air cleaner, but I am changing the hood this year to a forward facing scoop, and that might fit right in the scoop. I am worried about getting crap in there....
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: Dragula]
#2622722
02/17/19 10:43 PM
02/17/19 10:43 PM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
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Joined: Aug 2003
Posts: 43,303
Bend,OR USA
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Please tell me you don't use that air filter on it. 14 X 4 " should be minimum. I'd even look at a 6" tall element if you have to run a filter. Were I am pitted its like a sandbox and I have fenderwell headers that kick all that stuff up. I originally bought that to fit the Hemi, but I will have cut the intake down or switch intakes for it to fit the hemi. So, I have not raced the Duster with an air cleaner, but I am changing the hood this year to a forward facing scoop, and that might fit right in the scoop. I am worried about getting crap in there.... you definitely need to run a air cleaner, there is power in straightening out the airflow trust me on this, testing on the engine dyno and again at the track has shown me as well as many others about this Drop base air cleaners are the answer to carb. to hood problems 16x3 inch elements works very well on 512 + C.I. motors with excess of 750 HP
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: Dragula]
#2622999
02/18/19 05:55 PM
02/18/19 05:55 PM
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Joined: Feb 2005
Posts: 20,201 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,201
PA.
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And so the upgrades are starting to come together...Heads will stay the same for now...My next build is hopefully a procharger motor... You're leaving a significant amount of power on the table by not spending any money on the heads. I guess I don't understand what your goal is, since it seems to have changed from the original post. 5's is still the goal ....We weren't far off last year, and with a burnt head gasket and blown header tube, there should be some power left on the table. But yes, heads were what we originally wanted to do, but I think we will change it up more next year and with a procharger, we don't need super good heads. Money was the other decision. New heads were outside the budget, and the porting quotes I got seemed pretty high to me. So we went with new pistons and head gaskets to get a little closer to max compression. We will be starting the season on 50/50 race fuel and getting everything dialed in from there. But if you go to a 50/50 mix it won't be a pump gas combo anymore. All those years of insisting on being pump gas and you probably could have ran a 5 five years ago if you weren't so stubborn. LOL. But then again aren't we all Stubborn in our own ways. I know I am.
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
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: pittsburghracer]
#2623091
02/18/19 10:42 PM
02/18/19 10:42 PM
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Joined: May 2004
Posts: 12,418 Taxes & Virus's R-US, NY
Dragula
OP
I Live Here
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OP
I Live Here
Joined: May 2004
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And so the upgrades are starting to come together...Heads will stay the same for now...My next build is hopefully a procharger motor... You're leaving a significant amount of power on the table by not spending any money on the heads. I guess I don't understand what your goal is, since it seems to have changed from the original post. 5's is still the goal ....We weren't far off last year, and with a burnt head gasket and blown header tube, there should be some power left on the table. But yes, heads were what we originally wanted to do, but I think we will change it up more next year and with a procharger, we don't need super good heads. Money was the other decision. New heads were outside the budget, and the porting quotes I got seemed pretty high to me. So we went with new pistons and head gaskets to get a little closer to max compression. We will be starting the season on 50/50 race fuel and getting everything dialed in from there. But if you go to a 50/50 mix it won't be a pump gas combo anymore. All those years of insisting on being pump gas and you probably could have ran a 5 five years ago if you weren't so stubborn. LOL. But then again aren't we all Stubborn in our own ways. I know I am. Well stubborn, and cheap at times....At least I got rid of the purple cam...
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: Dragula]
#2631239
03/10/19 09:42 PM
03/10/19 09:42 PM
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Joined: May 2004
Posts: 12,418 Taxes & Virus's R-US, NY
Dragula
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New valve train solved a lot of my push rod issues....So hopefully we will have a much better race season. The rockers I had were ok on a 440 block, but on a 400, the push rods were rubbing. Also switched to a Flow cooler mechanical water pump over the Mopar one, a new Milidon oil pump, and a few other small things...
Now with new Comp Cams rockers, and Manton push rods, life is good again. Ready for race season.... Had to lathe some material off all the spacers and the top hold downs to fit, but once I clearanced all of them, it went together perfectly. Car goes for paint work next..
Last edited by Dragula; 03/10/19 09:48 PM.
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: Dragula]
#2631335
03/11/19 08:25 AM
03/11/19 08:25 AM
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Joined: Jan 2003
Posts: 13,401 Marion, South Carolina [><]
an8sec70cuda
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Marion, South Carolina [><]
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WHY are you still running a mechanical water pump? With an ET goal in mind, that ought to be the first thing to go.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: moparx]
#2631404
03/11/19 11:49 AM
03/11/19 11:49 AM
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Joined: Jan 2003
Posts: 13,401 Marion, South Carolina [><]
an8sec70cuda
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Marion, South Carolina [><]
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what was the difference between the flowcooler and mopar water pump ? Flo-Kooler pumps have the anti cavitation plate on the impeller and move more water. I ran one for a while, nice piece.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: an8sec70cuda]
#2631466
03/11/19 03:01 PM
03/11/19 03:01 PM
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Joined: Jan 2003
Posts: 10,019 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Porting your heads will probably get you to your goal. You can try tightening the lash also, that might be worth something if the cam duration is less than 280 @ .050. Any place to scrub a pound or two off? Every pound is worth about .001 ET.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: merpar]
#2631509
03/11/19 05:46 PM
03/11/19 05:46 PM
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Joined: May 2004
Posts: 12,418 Taxes & Virus's R-US, NY
Dragula
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WHY are you still running a mechanical water pump? With an ET goal in mind, that ought to be the first thing to go. Cause it fits, and when I upgrade the electric 35gpm one on the Hemi this year with a 55gpm pump, I will have one...I can put on there. I am sure I will have to make all special spacers to make it all fit though. Winter has been too cold to do it now. Those comp cams rockers, are they bushed? If not I would not run them. Steel on steel will gaul with roller cam spring pressures. Without thinking I ran a set years ago, comp cams. only .625 lift. Got one pass and several of the rockers were gauled. You might want to think about it! Rockers are bushed....I like them a lot so far. Wouldn't use them if they weren't bushed. Porting your heads will probably get you to your goal. You can try tightening the lash also, that might be worth something if the cam duration is less than 280 @ .050. Any place to scrub a pound or two off? Every pound is worth about .001 ET. We will be looking in to it next year. Heads are fresh and ready to go.....Prices for porting were pretty high I thought, only so much money to go around.....
Last edited by Dragula; 03/11/19 05:56 PM.
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: Dragula]
#2631707
03/12/19 08:18 AM
03/12/19 08:18 AM
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Joined: Jan 2003
Posts: 13,401 Marion, South Carolina [><]
an8sec70cuda
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I Live Here
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Marion, South Carolina [><]
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Use a "drop-in" style pump that fits in the factory housing, then all you'll need is a short belt.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: Dragula]
#2631872
03/12/19 12:50 PM
03/12/19 12:50 PM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
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Bend,OR USA
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My old pump gas Duster ran 10.69 ET at 124. MPH with the original set of ported big valve 906 heads, swapping the heads to a set of MCH CNC ported Eddy RPM heads picked it up to 10.40s at 127.MPH. I ended up swapping out the 4.250 stroke crank to a 4.300 to raise the compression ratio from 9.25 to 1 to 10.3 to 1 and that help it run in the 10.30s, the final change to that motor was changing the heads again to a set of Indy SR M.W. ports with a single Indy 400-3 with Holley 1050 CFM Dominator. The heads where 9.0 CC smaller than the Eddy RPM so that raised the compression ratio up to 10.8 to 1. Those changes ended up with a best of 9.993 at 134.8 MPH with the air cleaner and full exhaust system on and hooked up
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Dragula's Quest for the 5's....on Pump Gas
[Re: cuda499]
#2664611
06/10/19 11:47 PM
06/10/19 11:47 PM
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Joined: May 2004
Posts: 12,418 Taxes & Virus's R-US, NY
Dragula
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Well first two outings and car is working and running great....I have not hit my goal of running 5's, but I have not had to pull the valve covers even once...That means the new valve train is holding up really well. So far fastest pass is a 6.13...No where near 5.99 I want, but its a work in progress. Was hoping for a little quicker out of the gate, but it will get faster. 60ft is now down to a 1.34 consistently. Things I have learned is the new combo likes more rear tire pressure and more fuel. So I am homing in on both right now. Still tinkering with the timing and carb fuel pressure too.... And its not currently on pump gas, but in the future, I will be going back to 93, but with water/meth injection....So right now I am running C12/108 and when I get back to work somewhere, I will spring for the Snow kit... And here is a more up to date picture... 6.17 Pass https://www.youtube.com/watch?v=nfyZYITsKNA&t=22s6.18 Pass 1st round loss -.038 red https://www.youtube.com/watch?v=WZAorsZxu0Q
Last edited by Dragula; 06/10/19 11:53 PM.
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