LLave Posted May 4, 2016 Share Posted May 4, 2016 I am working on fabbing my own LS1/T56 mounts. I have the motor and transmission mocked-up in my chassis right now, I wanted to post a couple of images, and run it by the HybridZ brain trust. Please excuse the mess, the garage needs a good cleaning! The motor currently has an F-Body oil pan on it, I think I will swap out for a C6 pan to gain a little bit of ground clearance. My cross member has it's fair share of battle scars on it and having the oil pan significantly lower concerns me. The position is a bit arbitrary, here is how I arrived that this location: I leveled the car, centered up the motor as best I could, moved the motor until it was relatively close to the fire wall, low down, then I raised up the tail of the transmission until the top was close to the transmission tunnel to maximize ground clearance with the exhaust, then I adjusted the front of the motor up to be close to 3 degrees pinion angle (measured at the flat where the oil pan bolts up). This position looks to be a bit higher than Hawks, and a little bit further back than most. There is a string pulled at the center of the strut top holes for reference. Is there anything I am missing or not thinking through? All advice is welcome. Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted May 5, 2016 Share Posted May 5, 2016 Looks great! I would go forward enough to center the shifter in the hole. Why? So you can get a wrench in the belhousing bolts so you can do clutch maintenance without pulling the motor. Otherwise it looks perfect. Quote Link to comment Share on other sites More sharing options...
heavy85 Posted May 5, 2016 Share Posted May 5, 2016 Should be offset to the right, not centered. Lines up with the diff and helps weight distribution with the.driver on the left. Quote Link to comment Share on other sites More sharing options...
LLave Posted May 5, 2016 Author Share Posted May 5, 2016 Thanks you for the input. Keeping future maintenance in mind is a good point, though I wont be able to do much with the exhaust in there. I will hang my diff in there and shoot a laser along the center line, probably should have done that in the first place. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted May 5, 2016 Share Posted May 5, 2016 When I did this, I was able to get the right side head about 1.5" from the firewall with the motor offset 1.5" to the right. To do this I had to cut the trans tunnel, and on my 240 the T56 is just about even with the frame rails underneath. Looks like you might be a smidge lower and forward compared to mine. I'd be looking at oil pan clearance and whether the trans hangs down out of the bottom of the car. Quote Link to comment Share on other sites More sharing options...
LLave Posted May 6, 2016 Author Share Posted May 6, 2016 When I did this, I was able to get the right side head about 1.5" from the firewall with the motor offset 1.5" to the right. To do this I had to cut the trans tunnel, and on my 240 the T56 is just about even with the frame rails underneath. Looks like you might be a smidge lower and forward compared to mine. I'd be looking at oil pan clearance and whether the trans hangs down out of the bottom of the car. Thanks. As much as I want to keep the weight as low as possible, there are some practical limitations for oil pan ground clearance, especially on a street car. I am going to adjust it up and to the right a little, then fab some mounts and move on! Tired of staring at it, debating ideal positioning. Quote Link to comment Share on other sites More sharing options...
LLave Posted September 1, 2016 Author Share Posted September 1, 2016 Settled in on the location, decided I wanted to add AC, so.... I designed and fabricated a mount and belt tensioning system.Then came up with a shorter belt PS delete main accessory drive. I still need to go get a slightly shorter belt for, the current is just for mock-up. Anyway pics for those who may be interested: Accessory drive: Quote Link to comment Share on other sites More sharing options...
Richard Oben Posted September 7, 2016 Share Posted September 7, 2016 Ok I'll bite, what compressor and does is it clear the stock mount location from the Z? I would prefer to have the compressor there but the stock LS is too big and has rear ports. Thanks in advance. Richard. Quote Link to comment Share on other sites More sharing options...
LLave Posted September 7, 2016 Author Share Posted September 7, 2016 Richard, The compressor is a Sanden / Vintage Air 04709-VMA. Which is really a Sanen SD709 compressor. It has side exit ports. I did learn that he compressor heads are interchangeable on many Sanden compressors - Link to image http://www.peachparts.com/shopforum/attachments/diesel-discussion/111405d1368082177-617-sanden-style-c-compressor-mounting-kit-sale-installation-instructions-sanden-heads.jpg It does clear the standard motor mount position. However, with the JTR/Sanderson headers, it is real tight. I will be fabricating my motor mounts shortly. I think I am going to use 1.5" DOM from a frame rail bushing to a plate on the motor. To be determined. Quote Link to comment Share on other sites More sharing options...
Richard Oben Posted September 7, 2016 Share Posted September 7, 2016 Thanks for the info, I have the CXR kit and headers, so I will see if I can borrow a compressor and see if it fits without the mount. Hope you kept the cad file for the mount. Richard. Quote Link to comment Share on other sites More sharing options...
LLave Posted September 7, 2016 Author Share Posted September 7, 2016 Full disclosure, I did end up cutting the unused mounting ears of the frame rail side of the compressor to buy myself a little bit more clearance. Also, I have an under-drive pulley that gives me a slight bit more room for the belt tensioner pulley. I did save the CAD files. I could whip up another set of brackets. If you look close in this pic, you can see the fittings for the lines and the removed mounting tab (flat surface closest to the camera used to be tab) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.