i've been adopted! let the swap begin! - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shifty · 08-17-2005, 04:07 PM

Quote:

Originally Posted by newin72

DEFINITELY invest in an engine leveler!

Believe me, it's the first thing on my agenda. Need to get a tranny jack also. I won't have any idea where to put the damned x-member for the tranny until I get the engine sitting in there. I don't have any welding equipment either, so it should be fun (probably end up going out to buy one and learn how to weld overnight

)

*newin72* · 08-17-2005, 04:08 PM

get a bolt in tranny xmember

just gotta drill some holes

clean71 · 08-17-2005, 04:09 PM

WooHoo!!! You're going to love that. That's what I have in my 68. Lose the cats (obviously). OBTW, pick up a couple sets of old tires for the back, just to get that out of your system. You'll be able to spin the wheels for about as long as you want with that thing in there.

shifty · 08-17-2005, 04:24 PM

LOL. How about I keep the current wheels and tires on there, they're gonna go soon anyways, I hope.

Should I ditch the cats? I don't have money left to buy anything that can replace them.

clean71 · 08-17-2005, 04:31 PM

Ditch the cats and add some o2 simulators. I assume you'r going to get the ecu remapped as well.

shifty · 08-17-2005, 04:45 PM

Sending the PCM/ECM/ECU/whatever off the be reprogrammed, yep. Those O² sensors are expensive. I want to do something about the exhaust, mines rusting out a bit, I just don't think I'm gonna have the money. The only way I would be able to fork out the money for new exhaust is if the current setup won't fit without me hacking the frame some. I heard that modified vette exhaust will work, but ... haven't seen pictures yet.

clean71 · 08-17-2005, 04:48 PM

www.corvettegarage.com has the o2 sensors for $99

FirstGen · 08-17-2005, 04:48 PM

Quote:

Originally Posted by newin72

get a bolt in tranny xmember

just gotta drill some holes

How about you just go get a piece of square steel tubing from Home Deopt and weld a small piece of angle iron on it. That's what I did.

Cost me all of 6 bucks.

shifty · 08-17-2005, 04:51 PM

Quote:

Originally Posted by clean71

www.corvettegarage.com has the o2 sensors for $99

The engine came with all 4 intact. Don't gotta buy new ones. I'm just saying, they're expensive. Why would I want to get simulators if I've already go the existing ones?

FirstGen · 08-17-2005, 04:52 PM

Quote:

Originally Posted by shifty

Sending the PCM/ECM/ECU/whatever off the be reprogrammed, yep. Those O² sensors are expensive. I want to do something about the exhaust, mines rusting out a bit, I just don't think I'm gonna have the money. The only way I would be able to fork out the money for new exhaust is if the current setup won't fit without me hacking the frame some. I heard that modified vette exhaust will work, but ... haven't seen pictures yet.

By reprogramming the PCM you will be turning off the rear 02 sensors and therefore will not need the o2 simulators.

I don't think that the F-body manifolds will work for you but you can try. The truck manifolds definatly will not. Removing the Cats will give you some extra power either way OR you can just gut them by taking them off and ramming the guts out (it is a ceramic type of fine honeycomb crap).

shifty · 08-17-2005, 04:54 PM

Quote:

Originally Posted by FirstGen

How about you just go get a piece of square steel tubing from Home Deopt and weld a small piece of angle iron on it. That's what I did.

Angle Iron? What's that?

Hey, either one of you guys got shots of the underside of your truck while it's up on a lift? I'd love to see your setup (exhaust, crossmembers, etc).

Thanks!

*newin72* · 08-17-2005, 05:09 PM

angle iron is just an L shaped peice of Iron.... well sort of L shaped.. usually both sides are the same length.

FirstGen · 08-17-2005, 05:20 PM

I'll try to take a picture for you. I thought I had some but I couldn't find any.

clean71 · 08-17-2005, 07:17 PM

If you remove the cats, you will need the o2 simulators. That was my point earlier.

DTerry · 08-17-2005, 07:42 PM

Ive been wanting to put a t5 or t56 in my truck. So im woundering what are you going to do with the shifter?

FirstGen · 08-17-2005, 08:03 PM

Quote:

Originally Posted by clean71

If you remove the cats, you will need the o2 simulators. That was my point earlier.

The point was that HE will not. In general if you do not do any programming you would.

clean71 · 08-17-2005, 08:06 PM

Here's some ics of my setup. Don't have the t56 though.

clean71 · 08-17-2005, 08:09 PM

Umm..... see first pic of o2 simulator. Not going to argue the point. He may not "need" it, however his setup also may not perform optimally without.

clean71 · 08-17-2005, 08:11 PM

I know, it needs detailed. The one night I don't put it in the garage, we get a AZ windstorm. Sand everywhere.

FirstGen · 08-17-2005, 08:13 PM

no need to argue, I do this for a living. You don't need the rear O2's at all for performance. O2 sims are just a way to keep it from throwing codes with out editing the PCM. They are just for emissions.
Take care.

clean71 · 08-17-2005, 08:18 PM

My understanding (and I could very well be wrong) was that if the ECU/PCM is throwing codes related to o2 sensors, it can/will retard timing and therefore affect performance.

What you are saying then, is that if the ECU/PCU is reprogrammed correctly, the o2 simulators are not needed. "Correctly" being the key term.
Nice truck BTW.

shifty · 08-17-2005, 10:24 PM

why would i need the O² simulators? can't the O² sensor input just be programmed out of the PCM when it's updated>?

shifty · 08-17-2005, 10:25 PM

Quote:

Originally Posted by DTerry

Ive been wanting to put a t5 or t56 in my truck. So im woundering what are you going to do with the shifter?

What do you mean? I'm going to mount it on the floor. I posted some pictures from other people's websites who've done the swap for someone else here at hte forum in a recent post. Want the links?

FirstGen · 08-17-2005, 10:38 PM

Quote:

Originally Posted by shifty

why would i need the O² simulators? can't the O² sensor input just be programmed out of the PCM when it's updated>?

Exactly, that's all I was trying to clarify. The front O2 sensors are needed to monitor the A/F ratio. The rears are not needed as they are just for emissions. When you remove the cats you will need to delete the rear O2s from the PCM and your done - end of story.

shifty · 08-17-2005, 10:44 PM

Oops, I missed page 2 of this thread.

So, I keep seeing reference to "rear O²'s". There are four of them in plain site from the collector flange to the cats (2 on each side). I take it the one after the cat is the rear and the one closest to the collector flange is the front? What is done about the front one?

08-17-2005, 04:08 PM	#27
newin72 Account Suspended Join Date: May 2005 Location: East Texas Posts: 545	get a bolt in tranny xmember just gotta drill some holes Last edited by newin72; 08-17-2005 at 04:09 PM.

08-17-2005, 04:09 PM	#28
clean71 Registered User Join Date: Aug 2002 Location: San Diego, CA Posts: 335	WooHoo!!! You're going to love that. That's what I have in my 68. Lose the cats (obviously). OBTW, pick up a couple sets of old tires for the back, just to get that out of your system. You'll be able to spin the wheels for about as long as you want with that thing in there. __________________ CPO U.S. Navy(Ret) 1972 GMC Jimmy 4x4 Custom 1972 GMC Jimmy 2x4 Custom

08-17-2005, 04:24 PM	#29
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	LOL. How about I keep the current wheels and tires on there, they're gonna go soon anyways, I hope. Should I ditch the cats? I don't have money left to buy anything that can replace them. __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

08-17-2005, 04:31 PM	#30
clean71 Registered User Join Date: Aug 2002 Location: San Diego, CA Posts: 335	Ditch the cats and add some o2 simulators. I assume you'r going to get the ecu remapped as well. __________________ CPO U.S. Navy(Ret) 1972 GMC Jimmy 4x4 Custom 1972 GMC Jimmy 2x4 Custom

08-17-2005, 04:45 PM	#31
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	Sending the PCM/ECM/ECU/whatever off the be reprogrammed, yep. Those O² sensors are expensive. I want to do something about the exhaust, mines rusting out a bit, I just don't think I'm gonna have the money. The only way I would be able to fork out the money for new exhaust is if the current setup won't fit without me hacking the frame some. I heard that modified vette exhaust will work, but ... haven't seen pictures yet. __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

08-17-2005, 04:48 PM	#32
clean71 Registered User Join Date: Aug 2002 Location: San Diego, CA Posts: 335	www.corvettegarage.com has the o2 sensors for $99 __________________ CPO U.S. Navy(Ret) 1972 GMC Jimmy 4x4 Custom 1972 GMC Jimmy 2x4 Custom

08-17-2005, 05:09 PM	#37
newin72 Account Suspended Join Date: May 2005 Location: East Texas Posts: 545	angle iron is just an L shaped peice of Iron.... well sort of L shaped.. usually both sides are the same length.

08-17-2005, 05:20 PM	#38
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	I'll try to take a picture for you. I thought I had some but I couldn't find any. __________________ 1968 C10 build in process TT LSA/6L90e/9"

08-17-2005, 07:17 PM	#39
clean71 Registered User Join Date: Aug 2002 Location: San Diego, CA Posts: 335	If you remove the cats, you will need the o2 simulators. That was my point earlier. __________________ CPO U.S. Navy(Ret) 1972 GMC Jimmy 4x4 Custom 1972 GMC Jimmy 2x4 Custom

08-17-2005, 07:42 PM	#40
DTerry '70 GMC C-25 LWB Join Date: Oct 2004 Location: Binghamton, N.Y. Posts: 273	Ive been wanting to put a t5 or t56 in my truck. So im woundering what are you going to do with the shifter? __________________ 1970 GMC C-25 LWB (middle of frame up) 5-7 drop with 3in drop spindles, flip kit with blocks and still keeping the 3/4 ton. Shaved drip rails and marker lights, rear roll pan, cowl induction hood. 1987 Camaro z28 350, vortec 305 heads. 10:1 comp, t5 trans. Street terrrorizer. 1988 Monte Carlo (Super Stock ashpalt race car) My Truck

08-17-2005, 08:06 PM	#42
clean71 Registered User Join Date: Aug 2002 Location: San Diego, CA Posts: 335	Here's some ics of my setup. Don't have the t56 though. Attached Images __________________ CPO U.S. Navy(Ret) 1972 GMC Jimmy 4x4 Custom 1972 GMC Jimmy 2x4 Custom

08-17-2005, 08:09 PM	#43
clean71 Registered User Join Date: Aug 2002 Location: San Diego, CA Posts: 335	Umm..... see first pic of o2 simulator. Not going to argue the point. He may not "need" it, however his setup also may not perform optimally without. __________________ CPO U.S. Navy(Ret) 1972 GMC Jimmy 4x4 Custom 1972 GMC Jimmy 2x4 Custom

08-17-2005, 08:11 PM	#44
clean71 Registered User Join Date: Aug 2002 Location: San Diego, CA Posts: 335	I know, it needs detailed. The one night I don't put it in the garage, we get a AZ windstorm. Sand everywhere. __________________ CPO U.S. Navy(Ret) 1972 GMC Jimmy 4x4 Custom 1972 GMC Jimmy 2x4 Custom

08-17-2005, 08:13 PM	#45
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	no need to argue, I do this for a living. You don't need the rear O2's at all for performance. O2 sims are just a way to keep it from throwing codes with out editing the PCM. They are just for emissions. Take care. __________________ 1968 C10 build in process TT LSA/6L90e/9"

08-17-2005, 08:18 PM	#46
clean71 Registered User Join Date: Aug 2002 Location: San Diego, CA Posts: 335	My understanding (and I could very well be wrong) was that if the ECU/PCM is throwing codes related to o2 sensors, it can/will retard timing and therefore affect performance. What you are saying then, is that if the ECU/PCU is reprogrammed correctly, the o2 simulators are not needed. "Correctly" being the key term. Nice truck BTW. __________________ CPO U.S. Navy(Ret) 1972 GMC Jimmy 4x4 Custom 1972 GMC Jimmy 2x4 Custom Last edited by clean71; 08-17-2005 at 08:20 PM. Reason: add



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08-17-2005, 10:24 PM	#47
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	why would i need the O² simulators? can't the O² sensor input just be programmed out of the PCM when it's updated>? __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

08-17-2005, 10:44 PM	#50
shifty Questionable Join Date: Mar 2005 Location: Atlanta Posts: 13,376	Oops, I missed page 2 of this thread. So, I keep seeing reference to "rear O²'s". There are four of them in plain site from the collector flange to the cats (2 on each side). I take it the one after the cat is the rear and the one closest to the collector flange is the front? What is done about the front one? __________________ If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM.

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