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Old 10-14-2011, 12:59 AM   #1
NW_Ryker
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Back seat bolt sizes?

hey all,
long time no see. I'm throwing the top on this weekend so I can start driving the pig to school. And I need to bolt the back seat down as well, but the bolts will only go in about 3/4 of a turn. I'm not sure if the bolts I got from the po are correct, so I could use some measurements. Whats the length of the threads? I'm hoping that the threads are just blocked up from something.
Thanks for the help guys.
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Old 10-14-2011, 09:08 PM   #2
bigbadchev72
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Re: Back seat bolt sizes?

Front ones are a 7/16 fine thread, the rear ones are 1/2" coarse thread. I think I bought 1-1/4" ones
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1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels

1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
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Old 10-14-2011, 11:24 PM   #3
NW_Ryker
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Re: Back seat bolt sizes?

Front ones? I wasn't aware they were front ones. Where do they go?
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Old 10-15-2011, 12:47 AM   #4
bigbadchev72
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Re: Back seat bolt sizes?

http://67-72chevytrucks.com/vboard/s...d.php?t=486398
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1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels

1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels
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Old 10-18-2011, 03:08 PM   #5
tubbedII
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Re: Back seat bolt sizes?

Mine were a PITA to install, mainly because i have a box that holds all my air valves right behind the seat that's also using the same bolts to hold it down. So I bough extra long 1/2" bolts and threaded them up through the tub like a stud, and use a washer/lock-washer/bolt to hold it all in place. Don't know how necessary it is for eveyone else, but it was a life saver for me because I was having the try and thread the darn bolt from the front of the seat and under it.
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