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Author Topic: chevy 366 big block tall deck motor tbi conversion??  (Read 4425 times)

Offline pholliday1

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chevy 366 big block tall deck motor tbi conversion??
« on: August 01, 2012, 03:26:47 pm »
Have like new 366 bb motor wanting to put tbi from 454 on it has anyone done/seen this? have all the parts laying around wondering can i make them work together.
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1991 V3500 CREWCAB SRW 454TBI GMC
1991 v3500 crewcab SRW 454tbi 480le 6" lift
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Offline slammed79

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Re: chevy 366 big block tall deck motor tbi conversion??
« Reply #1 on: August 01, 2012, 06:51:15 pm »
I don't believe the intakes interchange.
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Offline Captkaos

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Re: chevy 366 big block tall deck motor tbi conversion??
« Reply #2 on: August 01, 2012, 08:18:15 pm »
You will need spacers for the intake.  are you talking about the mechanicals working or the wiring?
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Offline pholliday1

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Re: chevy 366 big block tall deck motor tbi conversion??
« Reply #3 on: August 02, 2012, 08:20:49 am »
I was curious if the stock 454 tbi chip would compensate for smaller displacement and the extra runner length from the spacer plates, without having to adjust nozzle pressure/custom efi chip etc. The only wiring issue I can think of is just making sure I have the right distributor the rest should be straight forward? Thanks for the input!
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VETERAN AND LIFETIME NRA MEMBER. WHAT DO YOU STAND FOR?
1991 V3500 CREWCAB SRW 454TBI GMC
1991 v3500 crewcab SRW 454tbi 480le 6" lift
1990 V3500 crewcab Dana 60 FF 14b 5:38 ratio 40 inch 11" lift
1989 v3500 crewcab 454TBI 5" lift

Offline Captkaos

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Re: chevy 366 big block tall deck motor tbi conversion??
« Reply #4 on: August 02, 2012, 05:40:40 pm »
Should be ok, but you may have to get a chip burned for it.  I think they put TBI on the latter 366's.
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