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SmokinVette.com Forums : Corvette Forums : C4 Corvette Forums : C4 Corvette General Discussion : Removing ECU/TPI and installing carb. 1986 C4
C4 Corvette General Discussion
1984 - 1996 Corvettes

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Old 01-27-2010, 06:22 PM   #1
fordean
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Default Removing ECU/TPI and installing carb. 1986 C4

1986 C4,
Anyone have any suggestions. Removing ECU and Tpi and installing carb. Would like to Get a holley stealth ram in future. But now carb is in. Distributor and associated items that need to be addressed I like to hear. What rewiring to trans or oil senders etc. Do They have a ECU wiring diagram. just for viewing.

Plus I have a 4+3 Dougy. I am going to install a tremec soon. But may put Dougy back in til monies arrive. Problem Dougy 4+3 dumps second gear on slowdown. Any info. Can I still retain stock distributor or should I upgrade it. Or toss it for A vac advance
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Old 01-27-2010, 06:31 PM   #2
hokies83
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Hey man throw us some dyno numbers you get with the stock engine with a carb ive always wondered thx a bunch and good luck !
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Old 01-27-2010, 06:37 PM   #3
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Why would you need to remove the ecm?
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Old 01-27-2010, 07:39 PM   #4
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You need a vac. adv. distributor, just unplug F.I. harness & keep it with the TPI, they are still sellable. You are very limited on hood space, you have to run a low intake or cut your hood. My car has a carb, custom hood, if you have any ?s let me know Ill do what I can.
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Old 01-27-2010, 11:09 PM   #5
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Quote:
Originally Posted by fordean View Post
Distributor and associated items that need to be addressed I like to hear. Can I still retain stock distributor What rewiring to trans or oil senders etc.
Low rise intake (Performer RPM ) and drop base air cleaner clears .Can run any non computer controlled dist
Need bypass fuel regulator to drop EFI pressure down for carb; kep stock pump and lines
Need means of controlling fans ; temp switch in head
Need a manual switch for the 4+3 O/d unit
If you plan on running HSR later can just tuck the unused injector wiring down on top of trans with zip ties

Quote:
Originally Posted by fordean View Post
Problem Dougy 4+3 dumps second gear on slowdown. Any info. or should I upgrade it. Or toss it for A vac advance
Most likely the selectors and synchros are worn allowing it to pop out of gear when the load come off

Last edited by vetteoz; 01-27-2010 at 11:18 PM.
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Old 01-27-2010, 11:10 PM   #6
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Quote:
Originally Posted by fordean View Post
Do They have a ECU wiring diagram. just for viewing.
http://www.chevythunder.com/198689_f...dy_1227165.htm
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Old 01-28-2010, 01:42 PM   #7
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Not stock any more, New Cam, Hyperte Dome Pistons. etc.

I like the response. Much appreciated. ANy brands.! I am much into a good spark. Plus I got hooker type Headers .They block all spark plugs need to dump it. Any solutioN>

Intend on cutting Hood and adding Scoop. Looks like I need a inch or two.

I did install Performer RPM. Dont know if it low rise type. I verify. Thanks. Motor was built by other.

Last edited by fordean; 01-28-2010 at 01:46 PM.
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Old 01-28-2010, 01:47 PM   #8
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Thanks. Good Response.
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Old 01-29-2010, 07:13 AM   #9
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Quote:
Originally Posted by fordean View Post
Not stock any more, New Cam, Hyperte Dome Pistons. etc.

I like the response. Much appreciated. ANy brands.! I am much into a good spark. Plus I got hooker type Headers .They block all spark plugs need to dump it. Any solutioN>

Intend on cutting Hood and adding Scoop. Looks like I need a inch or two.

I did install Performer RPM. Dont know if it low rise type. I verify. Thanks. Motor was built by other.
I like the hooker headers!
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Old 01-29-2010, 10:28 AM   #10
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how they line up with Spark plugs??
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