Boats For Sale:
1972 mustang w 5.7 |
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clr517 
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Joined: October-15-2015 Location: michigan Status: Offline Points: 47 |
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 Topic: 1972 mustang w 5.7Posted: October-15-2015 at 10:58am |
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hello all new to the site. I in the process of trying to put a chevy 5.7 in a 1972 mustang. When i got the boat it was in pieces. now I'm in the process of trying to figure out how to put the puzzle back together.
I would like know if anyone hAS done this before? and if any one has any tips or suggestions,or pictures? |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: October-15-2015 at 11:09am |
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Casey,
Welcome to CCfan. Pictures of your project will certainly help. Is the engine the original to the boat? So you understand the principals of a direct drive inboard, I suggest you start with taking a look at this video. |
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21157 |
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Posted: October-15-2015 at 11:41am |
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The 307 OMC was an option in '72, so there are Mustangs out there with small block Chevies for sure. You'll need to prop the boat appropriately with the extra cubes. Hopefully you're installing a reverse rotation engine to keep the boat from leaning to stbd excessively.
Welcome! |
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clr517
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Posted: October-15-2015 at 11:44am |
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Thanks peter! I pretty sure the engine is not original. Im not sure a 5.7 was even an option in 72. ill try and post some pictures as soon as i figure out how to.
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clr517
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Posted: October-15-2015 at 11:50am |
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Yes its a reverse rotation engine. what cubes? and whats appropriate?
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TRBenj
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Posted: October-15-2015 at 12:00pm |
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Reverse rotation- nice!
350 was never an option in the 16' mustang. The larger displacement (cubic inches) will require a prop with more pitch in order to get optimal performance from it. The most common engine/prop combo for that boat would have been a ~220hp 302 and a 12x14 federal prop. An old school hand finished (federal or oj) 12x15 would be a good place to start. If buying new, splurging on an equivalent sized Acme (1214, 12.5x13) would also be a strong consideration. |
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clr517
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Posted: October-15-2015 at 12:14pm |
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i just got the engine back from the machine shop(full rebuild). I think ill buy a new prop when i get there. for now i just need to figure on getting the engine back in and working properly. I hope I'm not getting into a bunch of fab work!
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8122pbrainard
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Posted: October-15-2015 at 12:21pm |
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Casey,
Does the engine have adjustable mounts? If so, the install should be pretty easy. If not, then wedges are used between the mounts and stringers. Still not too bad of an install just not as convenient. Keep alignment in mind. I suggest you do/check the strut to log alignment first before you drop the engine in. Speaking of stringers, what's their condition? have you checked them? Now's the time to check without the engine in place. |
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8122pbrainard
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Posted: October-15-2015 at 12:24pm |
They did know it was a RR correct? There have been some cases where the shop didn't!! 
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clr517
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Posted: October-15-2015 at 12:39pm |
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the mounts are adjustable! thats good to know. i am going over the strut to log tonight. the stringers had two soft spots that were injectable (not bad) that i glassed over when done. the guys at the shop were aware of the RR. I have to go but thank you two greatly for you time
-casey |
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clr517
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Posted: October-15-2015 at 5:26pm |
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sorry for jumping around. i take it that they are lag bolts that hold the mounts in?
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TRBenj
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Posted: October-15-2015 at 5:34pm |
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Correct.
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8122pbrainard
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Posted: October-15-2015 at 5:37pm |
Yes, lags. What I didn't mention is material. In the good old days,  The lags were silicon bronze which has a fantastic corrosion resistance but they don't make them anymore. The next best is stainless but, make sure they are type 316. The 18-8 stainless from China you find at the home improvement or hardware will rust. Mcmaster has the 316 in 1 piece quantities.
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8122pbrainard
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Posted: October-15-2015 at 5:41pm |
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McMaster Carr Put "lag bolts" in their search.
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clr517
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Posted: October-15-2015 at 6:59pm |
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thanks for the info peter. ill make sure to get the type 316
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DrCC
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Posted: October-15-2015 at 9:19pm |
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Gotta say Pete, I've never witnessed Silicon Bronze ever being used as engine lags.
I believe most were all grade 5. Fastenal has S/B lags, But they are very expensive and they only have 3/8" and 1/4". |
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8122pbrainard
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Posted: October-15-2015 at 10:59pm |
Come on Al! I thought you went as far back with boats that I do!!! BTW, I never have checked with Fastenal since I strongly disapprove of the company. Are the S/B lags square or hex heads? |
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clr517
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Posted: October-19-2015 at 10:16am |
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I went to install the motor mounts yesterday,and noticed that one moves freely and the other is super stiff. are they supposed to move? (this is my first inboard boat)
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8122pbrainard
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Posted: October-19-2015 at 10:26am |
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Casey,
One may be corroded more than the other but, once installed, mounts should be tight both up and down as well as side to side. How about those pictures? |
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clr517
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Posted: October-19-2015 at 10:31am |
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I submitted them to the diaries section. isnt thats how its done?
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clr517
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Posted: October-19-2015 at 10:36am |
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I should have figured, but you never know. I'm thinking that i just need to tighten them up as they are the adjustable kind.
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8122pbrainard
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Posted: October-19-2015 at 10:52am |
Casey, Submitting to the diary section is great. Keith reviews each submission and then will enter yours. We sure don't want any Matercrafts showing up there! For posting pictures in the forums, use "post reply" and not the "quick reply" Click on the icon of the tree with the up arrow. Boxes will come up to prompt you for loading from your computer. Some also like myself use a photo hosting site like photobucket. Give it a try. |
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clr517
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Posted: October-19-2015 at 11:37am |
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clr517
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Posted: October-19-2015 at 11:40am |
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clr517
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Posted: October-19-2015 at 11:49am |
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Chevy350
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Posted: October-19-2015 at 11:50am |
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Looks all original, Pete will like that part. It's a super clean mustang so I like that part a lot. Team Mustang
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1972 Mustang
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clr517
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Posted: October-19-2015 at 11:55am |
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clr517
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Posted: October-19-2015 at 11:59am |
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clr517
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Posted: October-19-2015 at 12:01pm |
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sorry for the sideways shots!
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Chevy350
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Posted: October-19-2015 at 12:17pm |
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Interior is super clean as well
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1972 Mustang
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clr517 wrote: