Author Topic: TBI swap (I miss my quadrajet)  (Read 1682 times)

Offline DrDaryl

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TBI swap (I miss my quadrajet)
« on: November 25, 2012, 09:01:47 PM »
I decided to try the TBI swap and after a lot of research decided to pull the throttle body/harness/etc from a 1987 R10 (350, 700R4) at the local salvage yard.  I opted to use an adapter plate to mount the throttle body to my stock spreadbore intake, and I used an inline Walbro TBI pump.  I did not use EGR as there was no way to connect it due to the adapter plate in the way.  My engine is a crate 350 absolutely stock.  She cranked right up but as it warms up begins to stumble, backfire, and dies.
I am getting fuel from the injectors, the timing is close (about 6 BTDC, but dies if I unplug the tan/black wire that is disconnected to set the timing).  I probably won't get to work on it until next weekend, thought I'd get some input on things to check.  Thanks

Offline VileZambonie

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Re: TBI swap (I miss my quadrajet)
« Reply #1 on: November 25, 2012, 11:03:26 PM »
Set the timing correctly and make sure the adapter plate is not leaking.

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Offline Captkaos

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Re: TBI swap (I miss my quadrajet)
« Reply #2 on: November 30, 2012, 07:44:18 PM »
Did you find anything? 

Offline DrDaryl

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Re: TBI swap (I miss my quadrajet)
« Reply #3 on: December 03, 2012, 02:21:25 PM »
I'm still working on it; I did have a bad idle air control and and replacing that made a big improvement but something is wrong with the timing on the engine; I'm having a friend come over Saturday to help me double check the distributor and plug wires.
Thanks