351M mods |
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jcraig2873
New Member Joined: 25-May-2013 Location: Indiana Status: Offline Points: 23 |
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Posted: 13-June-2013 at 7:17AM |
My car has a 351M could be a 400 have pulled oil pan to be sure suspect 351M, C6, and 2.75 gears, no a/c.
The engine runs ok now, but I'm going to pull it to freshen it up. Going with edelbrock performer rpm dual plane intake, 600-650cfm carb. (Maybe) m haven't decided on cam yet, think I want something eith a little lope to it. Will have heads rebuilt so coil bind shouldn't be a problem. My concerns are how much machine work can the block handle? I've heard the had thin casting to begin with, I dont know how out of round the cylinders are etc. What are thoughts on headers style brand etc and cam profile |
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
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is the engine a transplant for sure or do you think it may be the original?
if it's original the 5th digit of the VIN will tell you what it is, if the valve cover sticker has gone missing if the VC sticker is there, it'll say something like 'Engine Family 351M/400' then under that there'll be a 'Displacement' specifically listed |
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72 GT Ute
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jcraig2873
New Member Joined: 25-May-2013 Location: Indiana Status: Offline Points: 23 |
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It's a transplant, the 5th digit is an H, 351C 2V was the original engine.
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
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when you get the pan off & get a look, here's what you're looking for
on the front counterweight the 400 crank casting number is 5M, the 351M casting number is 1K
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72 GT Ute
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PS122
Member Joined: 23-March-2011 Location: Eaton, OH Status: Offline Points: 188 |
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If the engine is a 351M, I'd seriously consider swapping in a 400M crank and rods. Here's a link to an article HRM did a decade and a half ago that still has a lot of good info:
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Joe
'76 S&H Gran Torino http://starskytorino.com/joes/joes.html |
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Robbdtme
Senior Member Joined: 06-June-2012 Location: Central WI Status: Offline Points: 765 |
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Original cam ground 4 degrees retarded. If you are going to put some $ in it PS122 has the right advice. Intake and a 4bbl carb alone will not gain much other than loss of MPG. 6925-1HKR Hooker super comp headers are the only ones that fit these in our cars at 600-800 a set. ( Painted- or Ceramic coated ).
http://www.summitracing.com/parts/hok-6125-1hkr/overview/make/ford/model/gran-torino Edited by Robbdtme - 20-June-2013 at 5:38AM |
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Johnny cash Special 74-75-76 freak. 77 XR7. 78 LTD II sport looks pretty but poop 302 in it.
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unlovedford
Senior Member Joined: 17-December-2010 Location: Tennessee Status: Offline Points: 10142 |
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I desperately need headers for my 351, but just cannot see spending so much money. Maybe a set will materialize before me...
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Joe
1972 Mom's Squire Wagon 1972 Torino Wagon 1976 Torino 1968 Cougar XR7-First batch 1972 Torino 460 1989 BroncoII/Jeeps/Titanimous Popeye and Brutus (Rams) |
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jcraig2873
New Member Joined: 25-May-2013 Location: Indiana Status: Offline Points: 23 |
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I am going to see if I can find a good 400 crank and pistons.
Thanks for the help guys |
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jcraig2873
New Member Joined: 25-May-2013 Location: Indiana Status: Offline Points: 23 |
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Wouldn't I have to find a 400 block too.
The 351m has a 3 1/2" bore and the 400 has a 4" bore or am I wrong? |
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
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those are the crank strokes for each engine, they both have a 4" bore in 'overlap' years the cast codes for both engines are identical, they use the same block
Edited by Rockatansky - 20-June-2013 at 7:13PM |
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72 GT Ute
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PS122
Member Joined: 23-March-2011 Location: Eaton, OH Status: Offline Points: 188 |
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Not sure what part of Indiana you are from but this is on CL in the Dayton, OH area:
I have a 1979 Ford 400. It came out of a 79 lincon complete from carb to pan ready to bolt in, has power steering pump and air condition compressor has a rebuilt Holley carb It has 74,000 miles no oil leaks ran like a sewing machine when pulled a month ago we bought the Lincoln thinking it had a 460 in it for a bronco I'm restoring but found out it had a 400 in it when we got it home. Also have a really smooth running 351 m that came out the bronco both engines are great running engines $350.00 for 400 m and $250.00 for 351m or $550.00 for both. These are getting hard to find Call or text 937-210-2793 guarantee both engines to run http://dayton.craigslist.org/pts/3801273194.html |
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Joe
'76 S&H Gran Torino http://starskytorino.com/joes/joes.html |
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