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71 Cutlass Conv L96/T56 build in Dayton OH

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Old 02-27-2011, 06:11 AM
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Default 71 Cutlass Conv L96/T56 build in Dayton OH

Well, got my new engine on Friday, a 3k mile L96 out of 2010 Silverado. The MAF was destroyed in the wreck, so I need to get a new one and associated tubing. Any recco's on which MAF I should get? Also, I have read that the truck intake actually is a better performer than the car, but I know almost everyone swaps out to a car for looks. Am I mistaken on the performance difference? If I stay with the truck intake, I wanted to clean it up like this and try to paint it with the black chrome:
http://www.pirate4x4.com/forum/showthread.php?t=940584

comments?

This is going to take a few months...hope to be done before summer ends. Also, since I can't yet post on classifieds, if someone has an LS T56 swapover they want to sell, I'm in the market w/cash now. Actually prefer a really cheap one needing a rebuild that I can just ship to TDP and put a known good rebuilt one behind this motor.
Attached Thumbnails 71 Cutlass Conv L96/T56 build in Dayton OH-l96-engine-delivered.jpg   71 Cutlass Conv L96/T56 build in Dayton OH-truck-intake-cleaned.jpg  
Old 02-27-2011, 06:15 AM
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I am leaning to just get the LS7 clutch kit since this will be a basically stock setup (thinking about JBA shorty camaro headers/midpipe if they fit). Anybody with a great link on installing the clutch properly?

Thx!
Old 02-27-2011, 07:56 AM
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Nice engine. I went with the LS1 intake to clear the hood on my 442. The TB sticks up pretty far on the truck intake.
If you swap intakes, I'm pretty sure the L96 has rectangular ports so you'll need an LS3 intake, injectors, and rails.
Old 02-27-2011, 08:29 AM
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Originally Posted by Goldhawg
Anybody with a great link on installing the clutch properly?

Thx!
Found this one this a.m.; posted for others:
http://www.youtube.com/watch?v=11vv-QsnRh0
http://www.youtube.com/watch?v=tWzBU2iRmqo&NR=1
Old 02-27-2011, 08:32 AM
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Originally Posted by garys 68
Nice engine. I went with the LS1 intake to clear the hood on my 442. The TB sticks up pretty far on the truck intake.
If you swap intakes, I'm pretty sure the L96 has rectangular ports so you'll need an LS3 intake, injectors, and rails.
I do have the Ram Air hood; so were you just being safe or did you put it on and it hit? Seems like the alternator is just as high--I thought the truck accessories would clear?
Old 02-27-2011, 08:49 AM
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I got the intake for $30 with bolts, so it was cheap insurance.
Yeah, and it does look a little nicer.
Old 02-27-2011, 09:01 PM
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Well, I got the stock harness removed today. Want to send it off and have it cleaned up and done to support my install. Who do you all recommend? I've emailed speartech; haven't heard anything back. I'll contact waitforme and see what they can do.
Old 02-28-2011, 08:28 PM
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Well, I thought things were going ok today, as I got most things off the engine. But I started to drain the oil and about a gallon of coolant comes out! Then the oil finally comes out. So, looking at the pictures of the wreck, it looks like the engine could have been upside down. Not sure what I need to do next; was hoping not to pull the heads, now I'm not sure the next step. Thoughts?
Attached Thumbnails 71 Cutlass Conv L96/T56 build in Dayton OH-engine-w-o-intake.jpg   71 Cutlass Conv L96/T56 build in Dayton OH-engine-2.jpg   71 Cutlass Conv L96/T56 build in Dayton OH-wreck-3.jpg   71 Cutlass Conv L96/T56 build in Dayton OH-wreck2.jpg   71 Cutlass Conv L96/T56 build in Dayton OH-truck-wreck-1.jpg  

Old 03-02-2011, 06:26 PM
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Did you pull the spark plugs yet? Look for signs of water on the tips. If it is present I would pull the heads to look for water damage. The coolant could only come from 2 places. A crack in the block or heads or a leak in the intake. From your picture with the intake removed, it appears that you have rust stains in a couple of intake ports. That would be evidence of an intake leak across water ports. I would look there first.
Old 03-02-2011, 07:03 PM
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The Intake does not go anywhere near coolant (no passages through it or near it) So either something is cracked or the headgaskets blown wich I doubt. I would check for cracks in the block specifically on the side that was hit.
Old 03-02-2011, 07:50 PM
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no car pics yet?

if i dont go with a carb style intake ill probably be grabbing a TBSS intake; its supposed to be the 'best' style truck intake (not sure what else it came one) but you're right, if you dont mind the looks and it fits its better for low end torque (the tbss style doesnt lose any on the top end either, afaik).

i loved my old ls7 setup
Old 03-02-2011, 09:11 PM
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Originally Posted by Irish350
no car pics yet?
Well, how about an current engine (which is getting pulled Saturday) and an interior shot w/my GTO seats?
Attached Thumbnails 71 Cutlass Conv L96/T56 build in Dayton OH-cutlass-interior.jpg   71 Cutlass Conv L96/T56 build in Dayton OH-cutlass-lt1-intake.jpg  
Old 03-03-2011, 05:42 AM
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I expected a comment. If it is actual coolant and not clear water look at the throttle body coolant passage, it could have been damaged in the accident. This is the coolant I refer to.
Old 03-03-2011, 05:45 AM
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Originally Posted by oldgoat69
I expected a comment. If it is actual coolant and not clear water look at the throttle body coolant passage, it could have been damaged in the accident. This is the coolant I refer to.
Sorry, all the comments went over on a separate thread. after discovering the yard left the oil filler cap off after the wreck, and then powerwashed it. Was dirty water color, not dexcool.

See
https://ls1tech.com/forums/conversio...what-next.html
Old 03-03-2011, 09:41 PM
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ooooooooooohhhhhhhhhhhh those white goat seats are awesome. how much was recovering them?

i didnt know it was already an lt1 swap
Old 03-04-2011, 12:08 AM
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Originally Posted by Goldhawg
Well, how about an current engine (which is getting pulled Saturday) and an interior shot w/my GTO seats?
I love the cold air induction. I did something similar on my 68 vette with an L88 hood.
I'm still trying to decide what to do with my 72 442.
Old 03-04-2011, 09:49 PM
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Originally Posted by garys 68
I love the cold air induction. I did something similar on my 68 vette with an L88 hood.
I'm still trying to decide what to do with my 72 442.

I don't know how to connect it, but I'm thinking about getting one of those diagnostic cameras so I can see exactly how much clearance I have, then fiberglassing a box as part of the hood to force the air back towards the front of the engine bay. Then fab up some sort of box to surround and air cleaner that could have foam on the top to join up to the air outlet from the hood. Hard to describe, but that's what I think I might do.
Old 03-06-2011, 02:39 PM
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Well got the old Lt1/T56 out yesterday. Fair price to me and buyer so pretty happy, even though I'll pay 3-4 times sell price to get it LS power.

Here are a couple of pics of my frame mounts. What are the best engine mounts for this style? I know there are two styles; I don't really have a clue which style I have--I bought these in 1990 when I first put a tuned port motor in. Just moved the frame mounts around to the holes that fit--my engine thought it was in a chevelle.

So, reccos on motor mounts?
Attached Thumbnails 71 Cutlass Conv L96/T56 build in Dayton OH-frame-mounts.jpg   71 Cutlass Conv L96/T56 build in Dayton OH-frame-mount-2.jpg  
Old 03-06-2011, 03:08 PM
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I can't think of a reason the energy suspension tall and narrows wouldn't work.
Old 03-06-2011, 05:48 PM
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Another ?. If I am going with a basically stock engine (maybe shorty headers; no other change), is there a need to dyno tune once running? I'm trying to decide which way to go on harness. A couple of the harness guys I'm looking at charge $150 to delete vats, extra O2 etc. If this is all I'll need I should go this route. However, there is a local dyno tuner that will come to my house and do baseline startup tune for $250, and then lower his dyno tune costs for another $250 or $500 total. If I need dyno tuning, I'll not bother having the wiring people do any computer reflash. But if its advisable, then I'll go with the local dyno shop. Thoughts?


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