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#1 |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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tbi swap with my sm465
I'm going to swap in a 91 TBI 350 into my 69 with the original sm465 tranny.
As far as getting the tranny and engine to physcally bolt up and operate what do I need? Just a flywheel from say an 88 pickup with the sm465. It seems like I had to do something similar on a past project due to the difference with the 1 piece vs 2 piece rear main seals. |
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#2 |
Hand Crafted C-10
![]() Join Date: Aug 2006
Location: Burien, WA
Posts: 5,180
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Re: tbi swap with my sm465
Derek, I'm going to move you over to the drivetrain area.
BTW---Howdy neighbor! ET |
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#3 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,151
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Re: tbi swap with my sm465
As far as I know, all you need is the correct flywheel for a 1-pc seal engine. The same clutch should work, bellhousing, etc.
__________________
'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#4 |
Registered User
Join Date: Jul 2009
Location: Denver Burbs, CO
Posts: 116
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Re: tbi swap with my sm465
I agree with MARKDTN. The right flywheel and everything else will bolt up.
Are you keeping the tbi or just using the shortblock in a carburated set-up? If going to the tbi, is the donor ECM unit from an automatic or a manual? You may want to rechip so it is a manual chip. You should also look into getting a VSS output for the SM465 so you can get a signal for the ECM to use. There is a website called "jags that run" that has some VSS to put in between the SM465 and the cable to your speedo. |
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#5 | |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Re: tbi swap with my sm465
Quote:
I already looked at jtr for the vss. I'm planning on keeping the cruise control ![]() |
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#6 |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Re: tbi swap with my sm465
Another question along the VSS line:
So my donor truck (91 C1500) had the vss signal going into the instrument cluster where there is an intergral vss buffer that then puts out a signal to the ecm and cruise control module. My understanding is the original vss in the 700r4 puts out 40 pulses/rev sine wave and the the buffer steps this up to 2000 pulses/rev square wave for the ecm and 4000 pulses/rev square wave for the cruise. The ECM and cruise both have a single signal wire going to each. My JTR VSS is supposed to put out a 2000 pulse/rev square wave. It has 2 wires on it. Do I ground 1, and then run the other to the ECM to get the decel/edle and everything else the VSS is used for to function correctly. Further, can I just tap into this wire and plug it into the cruise control. Granted it will think it's going half as fast as I am, but as long as it maintains speed, I don't care. Is this all correct. |
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