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bolting up th 350 to 04 lq4 will 5 bolts be enough?

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Old 07-09-2008, 03:33 PM
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Default bolting up th 350 to 04 lq4 will 5 bolts be enough?

I noticed today that there are only 5 bolts that line up with my lq4 one hole on the pass side is not tapped. will this be enough ? also I dont have the flywheel for motor will I need to buy a spacer and a flywheel ?
Old 07-09-2008, 03:59 PM
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5 bolts will be fine on the bellhousing, just use the proper length high quality bolts.
A great choice is the TCI LS1 flexplate. Bolts on with no issues, bolts up to small bolt pattern (TH350) converters and is SFI approved. It is a little pricey (around $200), but no hassles. I tried the adapters and spacers from GMPP, and thought they were a little hokey, and not SFI approved. TCI worked out perfect.
Old 07-09-2008, 05:42 PM
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All you should need since its a LQ4 is the stock 6.0L flex plate for the 4l80 and the stock spacer. The flexplate will have the larger th400 bolt pattern on it so you can drill it to match or get a th350 converter with dual bolt patterns on it.
Old 07-09-2008, 08:30 PM
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thanks guys, already have a tci conv wich is drill dual bolt pattern. If I go with a stock flex plate can I buy the spacer from gm or someone else ? it came out of a 2500 hd so most likely there was a 4l80 in it right ? it was a 04 model. Also I need to buy one coil Should I just buy a gm or will parts house one be ok?
Old 07-10-2008, 03:33 PM
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Thats all I use! Just make sure they arent just your average hardware store bolts!
Old 07-12-2008, 04:03 PM
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did the motor have a flywheel bolted to it when you got it?
chances are the spacer is already on the motor.
bolt it up and go.
plenty of folks over the years with 5 bolts and good luck.
Old 07-12-2008, 07:50 PM
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I have 5 on my 200-4R also. I went to the dealer and got the correct heavy duty Chevy bolts. They are the correct length and have plenty of thread engagement.
Old 07-12-2008, 10:32 PM
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hey thanks hey not to change subject but blue racer 364 what came did you end up with with your l92 heads, I putting this motor in my 86 s10 now with a carb and most likely l92 heads. Have not seen much on cams in l92 carb form.
Old 07-12-2008, 10:38 PM
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sorry bout that its late that last reply was directed at blue thunder 364 or anybody else sorry
Old 07-12-2008, 10:59 PM
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make sure you buy CAR bolts, NOT truck bolts.
all the truck bolts have an extra stud sticking out the other end to bolt various things onto. they are also a 15mm head, which is a pain on my car swapping trannys with solid mounts.

car bolts are 13mm head. def. want chevy bolts, they thread in soooo much easier than 10.9 hardware store bolts.
if you have a CAT dealer in your area, thats a different story. they are black oxide flanged head bolts and are a lil cheaper than GM. GM you have to order, CAT usually has them in stock.
big rant for a bolt..... but lots of useful info.



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