Small physical dimension PCM options?
#1
Small physical dimension PCM options?
Hi guys, I'm putting a LS1 in a 73 Datsun 240z and I would like to fit the PCM under the dash due to space constraints in the engine bay. The f-body PCMs are to large for this.
Do I have any options for a physically smaller PCM? Such as something out of say a C6 vette? (Searching leads me to believe ?all? the 05+ PCMs are the smaller 05+ vette style? Building a custom harness is no problem. I know the connectors and consequently the pinouts will be different than my LS1 stuff. My question is more centered around whether I can use a later model (05+?) PCM with my reluctor, MAF, cable driven TB, 4l60E, etc.
If there are any options for me, which PCM(s) would be best (smallest physical size, best OS, etc.)?
I searched a fair amount without any luck, from what I gather this isn't a common question? Thanks for your time if you read this. Any leads, or suggestions on what to search the forums for would be greatly appreciated!
-Tyler
Do I have any options for a physically smaller PCM? Such as something out of say a C6 vette? (Searching leads me to believe ?all? the 05+ PCMs are the smaller 05+ vette style? Building a custom harness is no problem. I know the connectors and consequently the pinouts will be different than my LS1 stuff. My question is more centered around whether I can use a later model (05+?) PCM with my reluctor, MAF, cable driven TB, 4l60E, etc.
If there are any options for me, which PCM(s) would be best (smallest physical size, best OS, etc.)?
I searched a fair amount without any luck, from what I gather this isn't a common question? Thanks for your time if you read this. Any leads, or suggestions on what to search the forums for would be greatly appreciated!
-Tyler
Last edited by tylert14; 01-02-2012 at 05:50 AM.
#2
Ahhh I should be sleeping, not scouring the web right now... But I turned a few stones over and it looks like I am SOL... Looks to me all the "small" PCMs I want to use are only compatible with 58x wheels and won't work with my 24x wheel.
I had seen mention of lingenfelter working on a 24x to 58x conversion module but that smells fishy. Im going to call them later today.
So from further searching it looks like my main problems are the PCM being compatible with a 24x wheel, and being able to control a ICV because of the DBW being absent. Yeah looks like I'm SOL.
I had seen mention of lingenfelter working on a 24x to 58x conversion module but that smells fishy. Im going to call them later today.
So from further searching it looks like my main problems are the PCM being compatible with a 24x wheel, and being able to control a ICV because of the DBW being absent. Yeah looks like I'm SOL.
Last edited by tylert14; 01-02-2012 at 06:33 AM.
#6
I'm having a little trouble researching throttle body options. I really want to keep a 75mm bore.
Do any 3 bolt 75mm bore DBW throttle bodies exist? [EDIT: I wouldn't mind using a 4 bolt TB with an adapter plate. I just want to stick to a 75mm bore as this is for a 5.3L bottom end low RPM cruiser]
Is cruise control handled by the E40 PCM?
It handles the 4l60E without a seperate TCM correct?
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HID projectors will be taking up that real estate.
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I'm looking for a clean looking engine bay and need to fit all the various reservoirs and battery under the hood. Need to retain a wiper fluid reservoir with acceptable capacity, etc. This car is for an older gentlemen and it's going to see a lot of cruising miles in the California sun, and cross country. The owner has a lot of money invested in this car and I want to lay things out as neatly and functionally as possible. Adding A/C to the car really threw a monkey wrench in the mix...
I appreciate the comments, suggestions, and help so far guys, keep them coming.
Oh and shameless plug, it looks like I may have a nice refurbished DBC LS1 throttle body for sale soon if any one is interested.
Last edited by tylert14; 01-02-2012 at 10:43 PM.
#7
I think I may give up on this idea and just make a 99-02 PCM and outboard cruise control box fit in somewhere. Looks like I'll need a TCM with the E40 and I'll be left without a workable cruise control solution. Not to mention I can't find much info about using a small bore TB with the E40. Well it was worth pondering. Keep it simple stupid is the saying... Thanks for the input though guys.