Corzette Posted April 14, 2002 Share Posted April 14, 2002 Hey guys, I am continuing my restore and V8 swap etc... on my 73 240 but I need to know something...I have the JTR set back mounting plates and I need to know what the bolt sizes and lengths I need to mount the plates and motor mounts are and how many each etc. I am in Japan and METRIC rules here so I have to get my bolts from the states being easier I think. They have International bolts but I need the info so I can procure....CAN SOMEONE HELP Please!!!!? Also, does anyone have a set of motor mounts they want to get rid of for the JTR conversion or maybe where I can get a set? Thanks!!!! CorZette Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted April 15, 2002 Share Posted April 15, 2002 If no one can answer your quetions, e-mail me in a week and I will pull out all the bolts and measure them on my dummy engine set up. If I remember right they are all coarse thread 3/8 ths in about 3 different lengthes and you will defintely want grade 8 strength. Your motor mount question should be answered in The JTR manual if you want to know the years of chevy pick-ups (and my wife has found a new hiding place for my JTR manual and it will come looking for me in a few days). GM dealers sell the mounts for a little over $50.00 a pair and a parts house for less than $20.00. I picked up a set of GM on eBay for $5.oo plus shipping and also a pair out of a parts house for $16.00. Quote Link to comment Share on other sites More sharing options...
QWKDTSN Posted April 15, 2002 Share Posted April 15, 2002 $50 a pair?? $16?? $5???? I can't believe I payed over $130 for a pair of OEM Chevy mounts Quote Link to comment Share on other sites More sharing options...
Tim240z Posted April 15, 2002 Share Posted April 15, 2002 The mounts are from the 69 thru 72 chevy trucks. I used the extra set I have for my 71 Cheyenne 20. Tim Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted April 15, 2002 Share Posted April 15, 2002 The motor mount bolt sizes are in GRADE 8 : Passenger side; three (3)-3/8 -16 UNC X 3 1/2 inches long and... Two (2)-3/8 - 16 UNC X 1 1/4 inches long of which I attached nuts and washers to the back of the set-back (five total bolts) plate....................................... Driver side; (six total bolts) Three (3)-3/8-16 UNC X 4 1/2 inches long and... Three (3)-3/8-16 UNC X 1 1/4 inches long of which I attached nuts and washers to the back of both the set back plates' tapped and threaded 3/8-16 UNC holes as a precaution! When I went to school the teachers forbid us to write in the books ,now I have a JTR Manual that I own and can't seem to write in because of teacher retaliation. I am going to write all over that manual with information for future reference. Yes!!!!! NION a set of genuine 1965-72 Chevy truck GM motor mounts #3990332 off eBay for a little over $8.00 from a fellow that mounted a SBC to an engine stand and forgot what the motor mounts specifically fit. He posted a picture with the uniidentified chev mounts and I knew evxactly what they were for. I was the only bidder at $5.00. The downside is I spend many hours literally scouring auctions looking for deals but for entertainment I enjoy nothing more than hunting bargains and bragging about my finds. Quote Link to comment Share on other sites More sharing options...
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