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Electrical & Wiring Troubleshooting electrical.

 
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post #1 of 7 (permalink) Old Jun 7th, 03, 07:15 PM Thread Starter
 
Join Date: Jun 2003
Location: new jersey
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i just bought a crate fast burn 385 for my car....one problem.....it comes with an HEI distributor with vacuum advance.....the old distributor didn't have the vacuum advance......what should i do in terms of the wiring harness for the car? would installing an MSD HEI ignition kit with 6A ignition solve the problem?
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post #2 of 7 (permalink) Old Jun 8th, 03, 05:12 AM
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Tim
 
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Angry

That would make it easy, at least it will come with some instructions. Wiring up an HEI is easy too. Do a search in the archives and you will find tons of information. It been covered a lot. At the top of the screen just hit search, and then HEI and make sure you are in the electrical cadre. You will be amazed at how easy it is.
About the vacuum advance, what kind of carb are you running? Usually the carb will have two ports for the vac advance, straight vac and gradual vac. Not sure which one to use for your application but I am sure there is someone here that can help.

[img]graemlins/beers.gif[/img]

Tim


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post #3 of 7 (permalink) Old Jun 8th, 03, 07:11 AM
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Mark
 
Join Date: Feb 2002
Location: LR AR
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Angry

Vacuum advance is a good thing. You can't go wrong by hooking it up. I prefer manifold vacuum hook up but you will still get some streetable part throttle and cruise benefit from hooking it up to a ported vacuum source. Hooking it up to a manifold vacuum source has the added effect of running cooler and smoother at idle. [img]smile.gif[/img]

-Mark.
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post #4 of 7 (permalink) Old Jun 9th, 03, 12:12 PM Thread Starter
 
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Location: new jersey
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no carb, running tuned port injection, its a 255 lph in tank pump to a high flow filter to 26 lb/hr injectors with a 58 mm TBI.
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post #5 of 7 (permalink) Old Jun 9th, 03, 03:28 PM
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Mark
 
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What's "Tuned Port Injection"? [img]graemlins/clonk.gif[/img]

Sorry, I am an old school type of guy. I don't know 'nothin bout any fuel injection.

-Mark.
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post #6 of 7 (permalink) Old Jun 9th, 03, 04:25 PM Thread Starter
 
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alls tuned port injection basically means is a lot of math and a lot more wiring and work.....its a pain, but i got it all worked out
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post #7 of 7 (permalink) Old Jun 9th, 03, 04:49 PM
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Join Date: Mar 2002
Location: Austin, TX, USA
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Chevy's TPI system consists of a forward facin throttle body attached to a plenum. The plenum is connected to the intake by 8 runners (4 on each side). TPI systems look cool and provide good street torque / performance. They are a bit restrictive, but there are numerous upgrades that can make them perform quite well such as larger runners. One interesting fact about TPI is that all 8 injectors fire at once. The injectors don't fire in banks and they don't fire sequentially. Still they work quite well. Bolting it all together really sucks though. It's the kind of job that calls for custom made wrenches and stuff. Assembly order is important or else you'll find you need to tighten a bolt you can't get to. Nothing prettier than a nicely polished TPI system (except for maybe a blower). [img]graemlins/beers.gif[/img]

-dnult

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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