5.7 Vortec V-8 Swap / 86 FJ60

[Elbert]

Ok, here goes another question.

Swap plan is this: 5.7 Vortec + Toyota 5 speed. I plan to have emmisons turned off via the ECM. Do I need a VSS (vehicle speed sensor) for any reason and can you turn off this function via the ECM.
I plan on running the two front oxygen sensors, turning off the auto trans vai the ECM and turning off the rear two oxygen sensors via the ECM.

Anyone dealt with this..... I understand the reast but not clear to me on if I need a VSS signal for any reason?

 

[devo]

I run the 5.7 and a NV4500 in place of the Toyota 5spd. This not scientific but I have two ECMs. One is programed to run on regular (87) fuel, using all 4 oxygen sensors and the VSS. The other is programed to run on regular, using the two front 02 sensors and the VSS off.
I get 2 to 4 miles per gallon more and more pulling power using the VSS and the 4 02 sensors.

devo

 

[philos1]

I'd stick with all 4 O2 sensors as well, better engine management AFAIK. Get a hold of Ed Wright at fastchip or fastchips (I forget) they can dial you in on all the programming- not cheap, but I have not had one single issue with my programming...


cheers.

 

[Elbert]

I agree with 4 that the ECM has a better "picture" of the rich/lean situation and therefore you get better fuel control. I will not be running converters so there is not going to be a change in the O2 content down-wind of the front O2 sensors. We'll see how this works. I had some correspondence with Ed previously and will get back in touch with him next week to see what he thinks on this issue. I realize the OEM setup is 4 O2 sensors plus 2 converters, plus other emissions aspects. Some of that stuff is going out the window on my setup so that's the variable I'm looking at.

Well today is it.... we are going to start with the I-6 removal.

 

[Elbert]

update 15 Dec:

Started on truck this AM. Removed grill and most everything on the front. disconnected & marked wiring I need to reference. Tried to leave most everything connected to the engine that we could...All the emission crap, all the vaccum line, all the accessories & belts. ubotlted front and rear driveshafts, drained fluid from trans and transfer case, unhooked likage on trans case, removed trans shifter and boot, removed skid plate, removed crossmember and unboled trans mount. Removed engine, trans and transfer case together. My buddy Les under the truck with a jack and me on the engine lift. Dissconnected all the other crap to numerous to mention. Did not have any bolts break or strip. I ended breaking one of the little plastic valves on the LH firewall and the vale that's mouted on top of the fuel tank vent canister. Othe than that no breakage as far as I know. Got engine out, made a dolley to move the engie around (Les made it, I watched & helped). Only one "war wound" and that was me with a screw up with a lockblade knife.

(1) where do I get new driveshaft bolts & nuts?
(2) where do I get new trans mount ?

Might as well replace the above, becuase they look like original equipment.. Shall I just call Dan at American Toyota or other good source?

Pics to follow.

 

[Elbert]

pics will follow, tired to add captions, we'll see if that works.

 

[Elbert]

more pics

 

[Elbert]

more

 

[Elbert]

some more pics

 

[Elbert]

still more

 

[Elbert]

last pic for this PM.

 

[Elbert]

maybe a dumb question but here goes. When you use the mark's adapater "kit" for the v8 swap. Do you totally remove the entire motor mounts both left and right such that all you have left is the bare frame. Which you then proceed to weld the scab plates to and then your mark's motors mounts for the V-8. Just want to make sure before we get started with the grinder and torch.

 

[philos1]

yup. take it all off

 

[Elbert]

more pics - 30 Dec

More pics today. We removed some more hardlines and various msic parts under the hood we won't need. Also made good progress on rebuilding the transfer case. (really appreciate the pictures of the oiler and hole to plug) from the forum "guys". Removed and broke the GM OEM heater hose fitting (piece of #$%^&). Took some time with a chisel and tap to fix that, were were lucky the threads were not really screwed up (5.7 V-8). In process of removing the steering gear (its a lifetime autozone unit / ATP). It made it almost a year and started leaking again.. Part is way to expensive to leak / fail that soon. Discovered we need a new hood release cable. Still need to order hardline and hose to plumb fuel tank and engine for fuel injection. Decided to remove the OEM toyota P/S cooler and I'll run either a GM OEM unit or something from summit. Still need to mate the trans with the engine and finish the bellhousing setup. May make some progress on this tomorrow. Suprised I've only had one bolt strip and that was one of the LH inner fender well. More pics. If anyone needs to see someting in the process send me a PM and I'll take a picture or two for you.

 

[Elbert]

more pics 30 Dec

more pics

 

[Elbert]

2 more pics 30 Dec

pics

 

[Elbert]

3 More Pics 30 Dec

Last group of pics this evening. I will soon post some of this stuff on the for sale forum for those who may have a need. We've not been able to work on this as much as we've would have liked. Holidays and "real work" seem to have gotten in the way a little, but thats ok. I'm hoping we'll have it running by end of month Jan-08. I expect the install with the long setup on the trans and everything is going to be a little ackward, but not much we can do. The fuel injection fittings I listed previously are the correct ones. I belive that AZ FI also has some fittings that will work too, that are less expensive. We may be able to remove the OEM frame mounted motor mounts tomorrow. So far so good. I appreciate all the comments and advice / help / pics from others on the thread and others related to this swap. Its made it a good bit eaiser. One note...summit does carry a plug that espically designed to plug the EGR port on the LH side of the intake for those who may be able to run without EGR plubming.

 

[Elbert]

yup. take it all off

Ok, thanks

 

[iaintscared1969]

LOOKING GOOD Elbert! Keep going you are almost home free!!

 

[Elbert]

TC linkage ?

On our transfter case reubild we are having problems getting what I belive is the high / low linkage shaft to install correctly. We are unable to move item # 64 once we mate the case toether. See attached picuture reference part # 64.

Any tricks to getting this aligned correctly as you match the case halfs together?

I assume this should have some movement in order to shift from high to low, so far we've not had much luck with getting this right.

Any tips?