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#1
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Anyone using locked distributor is the engine hard to start. Is there increase in performance having full timing down low.
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Tom Cheatwood 62 tempest 455 68 GTO 400 |
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#2
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I use a MSD Digital 6 Plus with a 20 degree start retard function and the timing locked out at 39 degrees with old Eddy heads. Starts easy and the benefits are better idle. Distributor advance is meaningless with a converter that stalls high. I think starting the car without a start retard would be hard.
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1967 Firechicken, 499", Edl heads, 262/[email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule. |
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#3
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I've been running a locked distributor for many years. Street / strip use. I did it because I had issues with the timing jumping around. It definitely effects starting, but I have a MSD timing retard box, I dump 15* out at start up.
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#4
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I was running locked out on the street for a few years. Car ran great but after the 4th flexplate it was time for a change. Start retard is the way to go, im using a Progression Distributor
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Chris D 69 GTO Liberty Blue/dark blue T400, 9" w 3.50s, 3905lbs 461, 850 Holley, T2, KRE 310s, Comp HR 236/242D .572/.594L, RA manifolds, 11.53@114, 1.55/60 The spare: 467, 850 Holley, T2, Edelbrock Dport 310cfm w RA manifolds, Howard HFT 245/251D .561/.594L, 11.59@ 114, 1.57/ 60' |
| The Following User Says Thank You to OCMDGTO For This Useful Post: | ||
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#5
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Thanks guys,
started Looking at the starter saver this morning. Looks like that’s the way to go.
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Tom Cheatwood 62 tempest 455 68 GTO 400 |
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#6
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Hey Tom nice to see you on here!
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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#7
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I've been running locked for a long time
i haven't had issues, but i do run a somewhat larger cam and around 10.5 compression, and i would say its just a weekend toy car i've never had issues with the digital 6 box, 7al, and 8 boxes i've used mini starters, and have decent cables, and of course a good battery like Oddy i also used the different advanced bushings 4secflat sells that limits the timing and didn't have issues either maybe the only time i noticed anything is if i set the timing past 36, definitely around 38 or more, but i run 34ish and no issues another option a power switch to the ignition box and hit it when cranking speed goes up? |
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#8
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I tried it, did not like it.
I have a properly set up cast iron points distributor and a 7AL2. This is the race section and we all take off past the point where the distributor is a max advance anyway. So why deal with hard starting or ripped up ring gears ? |
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#9
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Thanks Skip, Try to come to one the Club Challenges this year.
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Tom Cheatwood 62 tempest 455 68 GTO 400 |
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#10
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Do you have your timing locked out with the Progression Distributor or do you have a bit of a curve or vacuum advance for the street?
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466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2,generic one inch open spacer 373 gears 3200 Continental Convertor best et 10.679/127.5/1.533 60ft 308 gears best et 10.76/125.64/1.5471 |
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#11
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TA, I run 32° all in at 1500rpms. I think it starts out around 12° initial
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Chris D 69 GTO Liberty Blue/dark blue T400, 9" w 3.50s, 3905lbs 461, 850 Holley, T2, KRE 310s, Comp HR 236/242D .572/.594L, RA manifolds, 11.53@114, 1.55/60 The spare: 467, 850 Holley, T2, Edelbrock Dport 310cfm w RA manifolds, Howard HFT 245/251D .561/.594L, 11.59@ 114, 1.57/ 60' |
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#12
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Update on locked out distributor and the msd starter saver. Got it installed over the weekend. The locked distributor is great, smother idle instant throttle response . The starter saver worked great 10 degree retard on 34 degree advance . Drove the car around got it hot and restart was no problem. Going to the track soon will see results. Thanks for all in put.
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Tom Cheatwood 62 tempest 455 68 GTO 400 |
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#13
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Update on the locked out distributor. Went to the Texas Muscle Car Club Challenge this past Sunday. The locked distributor fixed the hesitation I’ve chasing. The MSD Starter Saver made starting easier. But caused interrupted the MSD box signal to the distributor. Causing a misfire at upper rpm and my 1-2 shift is 5500 rpm missed when going to 3rd. The shift light was blinking also. I bypassed the module the problem went away.
So I saying it was a failure for me. There may be a fix for this I’m not a ware of . I’d like hear it if there is.
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Tom Cheatwood 62 tempest 455 68 GTO 400 |
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#14
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I've only run locked out distributors when I ran a ignition box with a programmable timing curve. I like to pull some timing out on the top end with some combos, so it's necessary. For my street cars I usually just recurve the distributor and make sure nothing is worn out of spec.
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#15
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What MSD box are you using?
MSD box I would think works with other MSD products. Does instructions/wiring diagrams say anything about the starter saver?
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#16
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Have you phased your rotor now that you locked out your distributor? Me too wondering about which MSD box your using. Are you using a crank trigger? Were running a 6AL2 box with a crank trigger and locked out dist.
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68 Firebird. IA2 block, 505 cu in, SD Performance E-head, Solid roller 3600 weight. Reid TH400 3:90 gear. 28" slick. Best so far 9.95@135 mph. 1.39 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exhaust 950 Quickfuel. |
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#17
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Rotor Phasing is important to check with the starter savers
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#18
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Rotor Phasing Conflicts: This is the most frequent cause for a miss when using a Starter Saver or retard module.
The Issue: The Starter Saver retards timing (typically 10°–20°) only during cranking. If the rotor tip is at the end of the distributor terminal at base timing, retarding it further can move it completely past the terminal, causing the spark to jump to the wrong terminal or not fire at all (a "miss"). The Fix: Use a phased rotor or modify a distributor cap to verify the rotor's position with a timing light while the retard is active. Voltage Drop Interference: The MSD 6A box is sensitive to voltage drops, especially during cranking when the Starter Saver is active. If the small red (switched 12V) wire drops below 10V while the starter is engaged, the box may fire intermittently, causing a perceived miss or no-start. |
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#19
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Progressive Ignition distributor. 10 degrees while cranking. Unlimited programmable profile.
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#20
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I do not believe the MSD 6A is sensitive to voltage drop. The instructions say it will deliverFULL voltage with a 9 v supply & will operate with a voltage as low as 5v.
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