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Re: results of added compression to 511 [Re: CSK] #2780166
05/31/20 08:09 PM
05/31/20 08:09 PM
Joined: Jan 2007
Posts: 8,031
Mt Morris Michigan
mopar dave Offline OP
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mopar dave  Offline OP
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Mt Morris Michigan
Race weight is 3380. I'm gonna have to check Wallace calculators for hp. I'm curious.

Re: results of added compression to 511 [Re: mopar dave] #2780172
05/31/20 08:21 PM
05/31/20 08:21 PM
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Posts: 4,489
northern,Ohio,USA
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Clanton Offline
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northern,Ohio,USA
A lot of fuel is used in the drive up/back and the burnout


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: results of added compression to 511 [Re: mopar dave] #2780181
05/31/20 08:44 PM
05/31/20 08:44 PM
Joined: Jan 2003
Posts: 30,989
Oregon
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AndyF Offline
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Oregon
You are probably around 650 crank hp these days. Might have picked up 40 or 50 hp from the change. 134 mph is fast enough to dip into the 9's. Probably just need to find a little more traction off the line or change the launch process. It is still a street driver right? So you are probably limited on how radical you can get with the chassis and launch.

Re: results of added compression to 511 [Re: AndyF] #2780186
05/31/20 08:53 PM
05/31/20 08:53 PM
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Posts: 8,031
Mt Morris Michigan
mopar dave Offline OP
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Yes, street/strip all the way, mostly street. I think its a high 9 car, just need to find it. Gonna keep pushin on for 700hp. Indy tunnel ram is next then a more aggressive cam.

Re: results of added compression to 511 [Re: Clanton] #2780190
05/31/20 08:58 PM
05/31/20 08:58 PM
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Posts: 8,031
Mt Morris Michigan
mopar dave Offline OP
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Mt Morris Michigan
Yeah, it burns some fuel for sure. Went with over a half tank and thought it would be enough. Oh and this 12.5:1 compression motor runs on 98 octane with no sign of detonation. Timing was left at 36*. I had penty of engine builders telling me it needs 110 all the time. Don't let anyone fool you, IMO 110 isn't needed with 12.5:1 in a 511 with under 7000rpm usage. I think there are many racers out there leaving power on the table by over octaning. I may get away with 96 octane. I'll let ya know.

Re: results of added compression to 511 [Re: mopar dave] #2780198
05/31/20 09:33 PM
05/31/20 09:33 PM
Joined: Oct 2003
Posts: 11,684
W. Kentucky
justinp61 Offline
I Live Here
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My small block is 11.2-1, it made 30 more hp on pump 93 than 98 race gas on a engine dyno.

Re: results of added compression to 511 [Re: justinp61] #2780202
05/31/20 09:44 PM
05/31/20 09:44 PM
Joined: May 2019
Posts: 710
Lake Villa Il
INTMD8 Offline
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Lake Villa Il
Awesome results, that's quite an improvement.


69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
Re: results of added compression to 511 [Re: justinp61] #2780219
05/31/20 10:56 PM
05/31/20 10:56 PM
Joined: Jan 2007
Posts: 8,031
Mt Morris Michigan
mopar dave Offline OP
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Yes my 11.25 408 was fastest on straight pump gas.

Re: results of added compression to 511 [Re: mopar dave] #2780244
06/01/20 05:48 AM
06/01/20 05:48 AM
Joined: Oct 2015
Posts: 570
UK
rb446 Offline
mopar
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UK
Originally Posted by mopar dave
Race weight is 3380. I'm gonna have to check Wallace calculators for hp. I'm curious.
Nice run, 662fwhp>

60 Foot E.T. : 1.39
1/8 Mile E.T. : 6.33
1/8 Mile Trap Speed : 107.40
1/4 Mile E.T. : 10.03
1/4 Mile Trap Speed : 134 up


1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987
Re: results of added compression to 511 [Re: rb446] #2780250
06/01/20 07:21 AM
06/01/20 07:21 AM
Joined: Mar 2006
Posts: 9,813
MI, usa
dvw Offline
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MI, usa
Making the assumption that the earlier runs were at Milan on 9-1-2019. The D/A yesterday from 10-4 ranged 254-1223. The previous date at the same times1284-1873. So some of your improvements were due to weather. A gain none the less. As far as fuel consumption. Last week a Mid Michigan we made 9 passes. Used just under 5 gallons. This weekend at Dragway 42 we were pitted at the end of the track. The runs were over a 2 day period. The run times were further apart. This entailed more warm up. 7 passes 5 gallons.
Doug

Re: results of added compression to 511 [Re: mopar dave] #2780260
06/01/20 08:18 AM
06/01/20 08:18 AM
Joined: Jan 2007
Posts: 8,031
Mt Morris Michigan
mopar dave Offline OP
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I can think of a few things that I could have done while there that may have put me into the 9 zone. One would be tighten up the rear shock because the separation is huge, two would be putting the wilsons 4 hole tapered spacer on and three, set my shift lite on 62 or 6300 so it gets shifted by 6600. I was a bit slow on the draw. Here’s the next project.

E068D42C-07C2-4880-87A6-EADAA0CDC247.jpeg
Last edited by mopar dave; 06/01/20 08:34 AM.
Re: results of added compression to 511 [Re: dvw] #2780265
06/01/20 08:32 AM
06/01/20 08:32 AM
Joined: Jan 2007
Posts: 8,031
Mt Morris Michigan
mopar dave Offline OP
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Mt Morris Michigan
Yes and no. I ran at Mid Michigan the weekend before I went to Milan, so two weeks in a row, but MM was first and the air seemed to be just as good as this past Saturday. Please check the weather on Aug 30 2019 at 9.37PM. That was the time of the 10.401@129.75 pass. Thanks
I ran that weekend without the mechanical fan, then I put the mechanical fan on and went to Milan the next weelend to see what HP it would cost me, but the weather sucked and I lost 2 tenths and 2mph. I'm thinking the weather cost me a tenth and the fan another tenth.

Last edited by mopar dave; 06/01/20 09:21 AM.
Re: results of added compression to 511 [Re: mopar dave] #2780275
06/01/20 09:12 AM
06/01/20 09:12 AM
Joined: Feb 2005
Posts: 20,144
PA.
pittsburghracer Offline
"Little"John
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I don’t know how you test n tuners test n tune without your own equipment to check air conditions. Online corrected conditions only tell part of the story.


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: results of added compression to 511 [Re: mopar dave] #2780277
06/01/20 09:15 AM
06/01/20 09:15 AM
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Posts: 11,705
Portage,michigan
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B3422W5 Offline
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Portage,michigan
Originally Posted by mopar dave
Race weight is 3380. I'm gonna have to check Wallace calculators for hp. I'm curious.


About 640-
My W5 deal weighed 3350 and went 135, figured it for 640 too

Last edited by B3422W5; 06/01/20 09:19 AM.

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: results of added compression to 511 [Re: pittsburghracer] #2780278
06/01/20 09:16 AM
06/01/20 09:16 AM
Joined: Aug 2011
Posts: 2,853
Pattison Texas
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Pattison Texas
Originally Posted by pittsburghracer
I don’t know how you test n tuners test n tune without your own equipment to check air conditions. Online corrected conditions only tell part of the story.


Thats a GREAT point


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

Re: results of added compression to 511 [Re: B3422W5] #2780279
06/01/20 09:20 AM
06/01/20 09:20 AM
Joined: Jan 2007
Posts: 8,031
Mt Morris Michigan
mopar dave Offline OP
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Ok, thanks for the info Don. I was at MM one weekend when you were there with your old car, seen it run. It is a bad ass for sure small block.

Re: results of added compression to 511 [Re: mopar dave] #2780290
06/01/20 10:34 AM
06/01/20 10:34 AM
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Portage,michigan
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B3422W5 Offline
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Portage,michigan
Originally Posted by mopar dave
Ok, thanks for the info Don. I was at MM one weekend when you were there with your old car, seen it run. It is a bad ass for sure small block.


My guess is once your combo settles in, it will run in the 9.80’s with a little tweeking
Its really coming around

Out of curiousity, what convertor and where does it flash

Last edited by B3422W5; 06/01/20 10:41 AM.

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8

Re: results of added compression to 511 [Re: B3422W5] #2780293
06/01/20 11:10 AM
06/01/20 11:10 AM
Joined: Jan 2007
Posts: 8,031
Mt Morris Michigan
mopar dave Offline OP
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Mt Morris Michigan
Vert is an 8” Dynamic refreshed by Lenny. Flashes 5400.

Re: results of added compression to 511 [Re: mopar dave] #2780359
06/01/20 02:32 PM
06/01/20 02:32 PM
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Posts: 739
WA
JD Dart Offline
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WA
Nice up big difference what compressing ratio did buddy of mine just put together a 424 SB with 10.50 C/R with a big cam told him good luck it will be a dog.


best so far 8.53 @ 158.59 MPH 60'1.240
Re: results of added compression to 511 [Re: JD Dart] #2780367
06/01/20 02:47 PM
06/01/20 02:47 PM
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Posts: 8,018
Tulsa OK
Bad340fish Offline
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Tulsa OK
Originally Posted by JD Dart
Nice up big difference what compressing ratio did buddy of mine just put together a 424 SB with 10.50 C/R with a big cam told him good luck it will be a dog.


my 416 is 10:1 with a 272@.050 .658 lift at the valve solid roller. Runs on 91 octane and has been 10.54 in a 3550lb street car. But I agree more compression is usually always better.


68 Barracuda Formula S 340
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