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Bored with 660hp.... #1687861 10/19/14 04:40 PM 10/19/14 04:40 PM
Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY	Well, to say I am disappointed with my 484 hemi powered street cars performance this year is an understatement. I don't think its totally from the Hemi's lack of hp, but there is at least one other gremlin in the system that is killing the HP as well. Between the weather and the changing track schedule I was never able to fully sort it out. So now I have it nearly out of the car.... My issue is high gear under full load she goes lean. I have not be able to figure it out. So the season is over, and I am on the fence....I was going to go and turn it into a 528, but now I am thinking 572, but I could also sell the whole thing and go a different route entirely....What would you guys do? '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Bored with 660hp.... [Re: Dragula] #1687862 10/19/14 04:50 PM 10/19/14 04:50 PM
Joined: Nov 2003 Posts: 1,858 NW Indiana F fbs63 top fuel
fbs63 top fuel F Joined: Nov 2003 Posts: 1,858 NW Indiana	Work with what you have. A fast car seldom gets like that in one season!

Re: Bored with 660hp.... [Re: fbs63] #1687863 10/19/14 05:01 PM 10/19/14 05:01 PM
Joined: Jan 2003 Posts: 1,238 North Central, Indiana Roughbird72 pro stock
Roughbird72 pro stock Joined: Jan 2003 Posts: 1,238 North Central, Indiana	Quote: Work with what you have. A fast car seldom gets like that in one season! 72 Plymouth Roadrunner 11.08@123.25

Re: Bored with 660hp.... [Re: Roughbird72] #1687864 10/19/14 05:31 PM 10/19/14 05:31 PM
Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY	Quote: Quote: Work with what you have. A fast car seldom gets like that in one season! I know....I have had this combo for a while. It should run better than it does, its just seems like its stuck... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Bored with 660hp.... [Re: Dragula] #1687865 10/19/14 05:51 PM 10/19/14 05:51 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	twin turbo's?

Re: Bored with 660hp.... [Re: Quicktree] #1687866 10/19/14 05:59 PM 10/19/14 05:59 PM
Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY	Quote: twin turbo's? If it was a strut front end, I would have more options available.... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Bored with 660hp.... [Re: Dragula] #1687867 10/19/14 06:19 PM 10/19/14 06:19 PM
Joined: Jan 2008 Posts: 4,280 Canada WO23Coronet master
WO23Coronet master Joined: Jan 2008 Posts: 4,280 Canada	Is it carb or injected? What's the combo run down?

Re: Bored with 660hp.... [Re: WO23Coronet] #1687868 10/19/14 06:33 PM 10/19/14 06:33 PM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	Won't punching it out even bigger make it go even leaner? I say sort out what you have!

Re: Bored with 660hp.... [Re: WO23Coronet] #1687869 10/19/14 06:35 PM 10/19/14 06:35 PM
Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY	Quote: Is it carb or injected? What's the combo run down? Its carburated currently. It was injected previously and I have the injection unit but sold the ecu.... So currently it is: 484 cubes with a 4.15 crank and 4.31 JE pistons 11.5:1 compression mild .600 lift mechanical chevy cam 426-1 Indy heads flowing 400cfm 1000cfm carb and port matched intake Car is 4.10 gears 31" tires 4500 stall car weighs 3220lbs I had 4.56's in it last year with a 5000 stall, but hated all the rpm on the street. It went 10.84 last year with the 4.56s and only 10.93 this year so far. Car is super drivable, so I have that covered... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Bored with 660hp.... [Re: Dragula] #1687870 10/19/14 06:40 PM 10/19/14 06:40 PM
Joined: Jul 2010 Posts: 1,845 Tampa D DusterDave top fuel
DusterDave top fuel D Joined: Jul 2010 Posts: 1,845 Tampa	What ET were you hoping to hit with it? Do a compression check. Gone to the dark side with an LS3 powered '57 Chevy 210

Re: Bored with 660hp.... [Re: DusterDave] #1687871 10/19/14 06:47 PM 10/19/14 06:47 PM
Joined: Feb 2005 Posts: 20,279 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,279 PA.	How are you coming up with the 660HP figures? 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.38@138.67 Livin and lovin life one day at a time

Re: Bored with 660hp.... [Re: DusterDave] #1687872 10/19/14 06:52 PM 10/19/14 06:52 PM
Joined: Nov 2003 Posts: 10,384 Upstate NY Bigcube I Live Here
Bigcube I Live Here Joined: Nov 2003 Posts: 10,384 Upstate NY	With the HP and weight you are at now it should be an easy 10.oh ride. Where are the numbers off? Is it spinning? Dieing on top end? Lot's of different things can cause poor ET compared to what it should go at your weight/hp. With that said, it sounds like something ain't working right. Jim

Re: Bored with 660hp.... [Re: Bigcube] #1687873 10/19/14 07:16 PM 10/19/14 07:16 PM
Joined: Feb 2005 Posts: 20,279 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,279 PA.	Quote: With the HP and weight you are at now it should be an easy 10.oh ride. Where are the numbers off? Is it spinning? Dieing on top end? Lot's of different things can cause poor ET compared to what it should go at your weight/hp. With that said, it sounds like something ain't working right. That's what I'm getting at. My Sons stock stroke 360 runs 10.50's to 10.70's at 3250 pounds and he's no where around 660HP. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.38@138.67 Livin and lovin life one day at a time

Re: Bored with 660hp.... [Re: pittsburghracer] #1687874 10/19/14 08:03 PM 10/19/14 08:03 PM
Joined: Jan 2003 Posts: 11,810 Portage,michigan B B3422W5 I Live Here
B3422W5 I Live Here B Joined: Jan 2003 Posts: 11,810 Portage,michigan	Quote: Quote: With the HP and weight you are at now it should be an easy 10.oh ride. Where are the numbers off? Is it spinning? Dieing on top end? Lot's of different things can cause poor ET compared to what it should go at your weight/hp. With that said, it sounds like something ain't working right. That's what I'm getting at. My Sons stock stroke 360 runs 10.50's to 10.70's at 3250 pounds and he's no where around 660HP. Yep...... 660 horse at that weight should run 9's easily. My old W5 motor probably made 650 and at 3350 pounds ran 9.80's in good sir. Something is WAY off in that combo. 69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car 1.41 best 60 foot 6.54 @ 105.20

Re: Bored with 660hp.... [Re: B3422W5] #1687875 10/19/14 08:13 PM 10/19/14 08:13 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks master
deaks master Joined: May 2004 Posts: 3,210 robin hood country	Do you use an A/F gauge ? i found mine invaluable when tuning my car. Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: Bored with 660hp.... [Re: deaks] #1687876 10/19/14 08:21 PM 10/19/14 08:21 PM
Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,493 Taxes & Virus's R-US, NY	It lays over on the top end after shifting to 3rd, and even sometimes at the top of 2nd.... So at a race weight of 3480lbs, and a best trap speed of 124mph, what do you guys calculate? 660hp seems pretty close to me. I know last year when it ran 10.84 there was another .10 in it of I sealed the carb to the hood. I keep wondering about the MSD box though.... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Bored with 660hp.... [Re: Dragula] #1687877 10/19/14 08:28 PM 10/19/14 08:28 PM
Joined: Jan 2003 Posts: 11,810 Portage,michigan B B3422W5 I Live Here
B3422W5 I Live Here B Joined: Jan 2003 Posts: 11,810 Portage,michigan	Quote: It lays over on the top end after shifting to 3rd, and even sometimes at the top of 2nd.... So at a race weight of 3480lbs, and a best trap speed of 124mph, what do you guys calculate? 660hp seems pretty close to me. I know last year when it ran 10.84 there was another .10 in it of I sealed the carb to the hood. I keep wondering about the MSD box though.... 525...... Maybe 550 horse. Before my w5 motor I had a 416 with flat tappet, mildly ported Eddie heads. Car weighed 3450 at that time as it still had the bench seat in it( and otherwise bone stock in and out 70 Duster) cage and my 300 pounds in it, and it ran 10.70's at right at 124 through the muffs. I figured it for close to 550, maybe a hair less. I had a 6al do exactly what you are dealing with( lay over top of second and third) that I chased half of a season few years back..... Knocked about 5 or 6 tenths out of the car. Swapped in a digital 6 at that time and never did it again Last edited by B3422W5; 10/19/14 08:34 PM.

Re: Bored with 660hp.... [Re: B3422W5] #1687878 10/19/14 08:35 PM 10/19/14 08:35 PM
Joined: May 2004 Posts: 3,210 robin hood country deaks master
deaks master Joined: May 2004 Posts: 3,210 robin hood country	My car is a genuine 590-600 hp it's lighter than yours but you should be going at least very low 10's at least 128-9 Mick 69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36

Re: Bored with 660hp.... [Re: B3422W5] #1687879 10/19/14 08:39 PM 10/19/14 08:39 PM
A Anonymous Unregistered
Anonymous Unregistered A	Just had an MSD do the same thing Friday on the dyno--swapped out the distributor for fresh MSD unit and whamo! All good and pulled like it should-- It can be the module in the dist as well--you would never think it--I thought it should work or not work but found out different Engine would just layover above 5000--put exactly same curve we always use black stop and one light silver one blue spring--and she went to work and ran great--always...I mean always something. I bet that Hemi is running out of fuel--has an elbow or something in the system or just not getting full voltage to the fuel pump--we always see giant swimming pool filler pumps with NO relays etc check and they are just not getting voltage--not pumping "what the box says" A drag car can run good with no symptom other than slow and low MPH--get fuel straight and it can really make a big diff China regulators are trouble too--Best for the $$ is Aeromotive stuff--class act quality and good support--regulators are very nice units but remember are o ring fittings not pipe thread when planning your plumbing.

Re: Bored with 660hp.... [Re: ] #1687880 10/19/14 08:55 PM 10/19/14 08:55 PM
Joined: Jan 2003 Posts: 11,810 Portage,michigan B B3422W5 I Live Here
B3422W5 I Live Here B Joined: Jan 2003 Posts: 11,810 Portage,michigan	Quote: Just had an MSD do the same thing Friday on the dyno--swapped out the distributor for fresh MSD unit and whamo! All good and pulled like it should-- It can be the module in the dist as well--you would never think it--I thought it should work or not work but found out different Engine would just layover above 5000--put exactly same curve we always use black stop and one light silver one blue spring--and she went to work and ran great--always...I mean always something. I bet that Hemi is running out of fuel--has an elbow or something in the system or just not getting full voltage to the fuel pump--we always see giant swimming pool filler pumps with NO relays etc check and they are just not getting voltage--not pumping "what the box says" A drag car can run good with no symptom other than slow and low MPH--get fuel straight and it can really make a big diff China regulators are trouble too--Best for the $$ is Aeromotive stuff--class act quality and good support--regulators are very nice units but remember are o ring fittings not pipe thread when planning your plumbing. His issue doesn't seem Rpm related( neither was mine) I am sure he wrings it out in first gear before shifting to second, and he didn't have any issues in first at all, only appear in the top of second. I thought my identical problem was fuel related/ vapor lock, etc,etc. Mine would run 9.90's on a normal pass, then about every second or third pass, it would run 10.50's, laying over at the top of second and all of third. The problem finally went to every pass it doing that. Swapped out the MSD box and that cured the problem. Had zero to do with fuel at all. That was why it took me so long to find the problem, I could have swore it was fuel delivery related 69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car 1.41 best 60 foot 6.54 @ 105.20

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