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Re: Hilborn EFI 512 Charger [Re: CSK] #2716361
11/16/19 12:16 PM
11/16/19 12:16 PM
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Pattison Texas
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The next time my buddy rents the track I will go & do some BADLY needed tuning, its to dangerous around here on the street to make a hard pull .


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: Hilborn EFI 512 Charger [Re: CSK] #2716367
11/16/19 12:37 PM
11/16/19 12:37 PM
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moparx Offline
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i understand now, why only one pass.
glad you got home safe.
hope today you are better. i am.
beer

Re: Hilborn EFI 512 Charger [Re: moparx] #2716381
11/16/19 01:08 PM
11/16/19 01:08 PM
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Originally Posted by moparx
i understand now, why only one pass.
glad you got home safe.
hope today you are better. i am.
beer


up


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: Hilborn EFI 512 Charger [Re: CSK] #2716399
11/16/19 02:10 PM
11/16/19 02:10 PM
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I have come to the conclusion that my time slip is all wrong, on my data log it shows 5900 rpm, 123mph , or the converter is junk, look at the MPH for the 1/8, 80 mph
only way to know is make some more passes

74522562_2629893110402715_3547659822767800320_o.jpg

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: Hilborn EFI 512 Charger [Re: CSK] #2716401
11/16/19 02:13 PM
11/16/19 02:13 PM
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turn up the volume & you can hear it real well. lots of fuel blowing out

Last edited by csk; 11/19/19 06:55 PM.

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: Hilborn EFI 512 Charger [Re: CSK] #2716418
11/16/19 03:00 PM
11/16/19 03:00 PM
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So. Burlington, Vt.
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fast68plymouth Offline
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Yup......a track rental day is what you need.
Make like 10 passes on it.

A 7.109 is theoretically an 11.16...... so the back half was a little better..... which makes sense with the 1.58 60’ time.

Last edited by fast68plymouth; 11/16/19 03:02 PM.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: CSK] #2716520
11/16/19 07:33 PM
11/16/19 07:33 PM
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Bend,OR USA
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I've never seen a street car or even some good half fast bracket cars pick up 50+ MPH in the last 1/8 mile shock shruggy 15 to 25 MPH maybe, never above 35 MPH confused
It is time for more testing wrench grin
Have fun, work on the 60 ft. times first, more power will make them worst(spin more) until you get it to hook better up
BTW, did I say that baby has a easy 10.90 in it whistling up Probably a 10.70 or quicker up devil

Last edited by Cab_Burge; 11/16/19 07:35 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Hilborn EFI 512 Charger [Re: Cab_Burge] #2717151
11/18/19 12:56 PM
11/18/19 12:56 PM
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Pattison Texas
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Well this is a street car & here is a short video on the way home in my junk.


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: Hilborn EFI 512 Charger [Re: CSK] #2717213
11/18/19 03:22 PM
11/18/19 03:22 PM
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It looks like that stack EFI system is working well up bow


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Hilborn EFI 512 Charger [Re: CSK] #2718649
11/23/19 02:13 PM
11/23/19 02:13 PM
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north of coder
moparx Offline
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looks like good info popping up on the screen.
just don't CRASH playing with yer phone ! biggrin stirthepot
beer

Re: Hilborn EFI 512 Charger [Re: moparx] #2718652
11/23/19 02:27 PM
11/23/19 02:27 PM
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Originally Posted by moparx
looks like good info popping up on the screen.
just don't CRASH playing with yer phone ! biggrin stirthepot
beer


LOL, yeah I probably should not do that, especially because I get so angry at the TEXTERS while driving , they are ALL over the place, going slow swerving, running me & others off the road, Good point there LOL smile

Last edited by csk; 11/25/19 03:57 PM.

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: Hilborn EFI 512 Charger [Re: CSK] #2718682
11/23/19 04:10 PM
11/23/19 04:10 PM
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Mt Morris Michigan
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Whats your avg L/R A/F spread? Just curious as a friend of mine runs dual o 2's as well and seems his are always 1 full point difference.

Re: Hilborn EFI 512 Charger [Re: mopar dave] #2718685
11/23/19 04:23 PM
11/23/19 04:23 PM
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Originally Posted by mopar dave
Whats your avg L/R A/F spread? Just curious as a friend of mine runs dual o 2's as well and seems his are always 1 full point difference.


It can & has been 2 points off, what I do is data log & correct the right bank AFR to match the left bank that is monitored & adjusted by the ECU.


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: Hilborn EFI 512 Charger [Re: CSK] #2718705
11/23/19 05:46 PM
11/23/19 05:46 PM
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So. Burlington, Vt.
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Charlie...... what’s the rear tire diameter?

What do you have the rev limiter set to?


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2719195
11/25/19 02:55 PM
11/25/19 02:55 PM
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Originally Posted by fast68plymouth
Charlie...... what’s the rear tire diameter?

What do you have the rev limiter set to?


Sorry I missed this post from you
Dwayne , it has 28" tires, 325-50-15, I had the rev limit set at 6500, & according to the data log it started cutting at 6400, I have been logging from the Holley ECU & it does not give the MPH, the Holley Dash can also log & it will give the MPH & just need to do some reading to learn how to log off the dash.


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: Hilborn EFI 512 Charger [Re: CSK] #2719212
11/25/19 03:38 PM
11/25/19 03:38 PM
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If you were clipping the rev limiter @6400....... going 124mph.....28”...... 3.54’s.
Driveshaft rpm should be about 5250.

At 6400, the engine is turning 22% more rpm than the driveshaft.

Or was the misfiring in high gear at the traps more of a tuning issue?

Sounds like more tuning req’d......and more track time to get a handle on what’s going on.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2719215
11/25/19 03:48 PM
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At the traps it was 5900 ish, no banging in high gear.

I have now changed the rev lim to 7k & changed the color of the shift light, that might help me see it better


Last edited by csk; 11/25/19 03:59 PM.

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: Hilborn EFI 512 Charger [Re: CSK] #2719217
11/25/19 03:53 PM
11/25/19 03:53 PM
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Pattison Texas
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With the large Throttle blades, Accel pump adjustment needs a lot of tuning, & to do that it needs to be done with good traction, [engine loaded] on the street it just spins, I will go back when my friend rents the track,


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: Hilborn EFI 512 Charger [Re: CSK] #2719231
11/25/19 04:54 PM
11/25/19 04:54 PM
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So. Burlington, Vt.
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5900rpm....... so about 12.5% slippage.

Not unexpected out of combo like that.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2719232
11/25/19 05:01 PM
11/25/19 05:01 PM
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Originally Posted by fast68plymouth
5900rpm....... so about 12.5% slippage.

Not unexpected out of combo like that.


well thats not to bad, I replace the bad video with a good one, you can see the oil & fuel smoke, more fuel I hope LOL. its funny how smooth the idle is, sounds like a stock 440hp

Last edited by csk; 11/25/19 05:03 PM.

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

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