TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

B Body Distributor hole

Old 04-02-2014, 09:45 AM
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Car: 91 RS
Engine: LT1
Transmission: T56
Axle/Gears: 3.42 LSD
B Body Distributor hole

I have a 92 Roadmaster I was going to do a LT1 cam, and hopefully some L98 heads if I can find them.

I also have a ZZ4 intake I got for cheap, but of course it has the wrong size distributor hole. I have found where the B Bodies use a 1.75" hole and the standard size it 1.375". Is it possible to just bore out the hole on the ZZ4 intake to accommodate the B body distributor?

I run a machine shop so the machining is nothing, but I don't know if there are any other differences I need to be aware of.
Old 04-02-2014, 12:23 PM
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Re: B Body Distributor hole

Do the EGR ports in the side of the manifold line up with exhaust gas passages in the heads?
Old 04-02-2014, 02:19 PM
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Car: 91 RS
Engine: LT1
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Re: B Body Distributor hole

Originally Posted by Schurkey
Do the EGR ports in the side of the manifold line up with exhaust gas passages in the heads?
EGR will be eliminated.
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