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Author Topic: what are you running 351/400m's in?  (Read 10019 times)
modularmadness
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« on: January 22, 2010, 10:12:35 pm »

I just read through some of these 351/400M's threads and have been amazed at what people do with them.

with their size and weight, what are you all, or have seen people run these in
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SteveL
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« Reply #1 on: January 22, 2010, 11:35:23 pm »

Back in 1974 my older brother ran a 400 with CC 351C heads in a '71 LTD,
a hand made intake with a 1050cfm carb, ran mid 12s on 295/50R15s, had
a C6 and 3.70 gears.  Remember, the pig weighed 4200lbs, not including
the driver...


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Steve.K.Bates

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windsordeath
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« Reply #2 on: January 22, 2010, 11:40:39 pm »

Only modified I've seen rodded was in the truck it was born in..
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SteveL
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« Reply #3 on: January 22, 2010, 11:45:45 pm »

1971 was the first year the 400 was offered, it was the stock engine
in my Brothers car...

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Steve.K.Bates

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wyoming4x4
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« Reply #4 on: January 19, 2011, 02:39:10 am »

 soon to be a 1970 ford 4wd crewcab. dana 44/70 rear. aftermarket leafs rear and deaver coils front. truetrac diffs. 400 mated to a zf-42 5speed tranny. It not a bolt and go situation, some mods to make work. 400 ford with d3ze 4v heads epoxy ported with 2.190/1.71 vlvs. epoxy port head. price spacer plate to a edelbrock air gap intake. 400 block torque plated and all the usual upgrade to block with ARP everything. cleveland pistons and bushed rods. mpghead hyd roller cam. This will haul my other big ford 4wd on occasion.
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keepin old iron alive one ford at a time.
81Mudder
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« Reply #5 on: January 21, 2011, 10:22:33 pm »

my brother has a 424ci modified with cleveland flattops an 2bbl cleveland heads, solid roller cam in his mud racing truck.
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Don W.

1967 mustang drag project 1/8 mile car
393w, c4 trans reverse manual valve body, coan 4500 tc, 9 inch rear end 4.88 gear, cal-trac's with adjustable shocks, tinman subframe connectors.
417strokers
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« Reply #6 on: May 12, 2011, 03:37:28 pm »

      Before there were stroker kits Avalable I built a  417 ci 400 with 4V Cleveland heads and a edelbrock toprquer and 750 dubble pumper . The engine was in a fox Body Mustang with a C4 Auto tranny. My target was to run 12.00 at about 115 mph. My calculation indacated i needed 400hp to reach this number.
 Parts included a 400 block bores .060
400 crank offset ground to 4.020" stroke and .040" under bearings .
400 rods bushed to except a .912" pin size Cleveland 351 flat top piston
1971 boss 351 heads with roller rockers and a comp cams solid lifter 294R race grind cam.
 The finished engine had to be detuned to slow the car at 5500 it will run 12.00 all day and never miss a beat . A 400 is a good cheep stroker. This engine would make an easy 450 hp at 6000.     
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windsordeath
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« Reply #7 on: May 12, 2011, 04:21:39 pm »

Recently saw one in a Aussie falcon... anybody aware they had dual bolt pattern 400 blocks? That was a new one on me.. you could use either a big block or smallblock transmission behind it..
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417strokers
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« Reply #8 on: May 12, 2011, 05:19:06 pm »

  Yes the dual bolt patern was on some of the 75 blocks! The reason was to bolt the Pantara trans axel to a m block ,these are rare not something you find every day .
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windsordeath
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« Reply #9 on: May 12, 2011, 06:14:25 pm »

Was that the reason behind it?
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417strokers
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« Reply #10 on: May 12, 2011, 07:34:40 pm »

  Yes that was the origanal plan when the Cleveland was droped but i don't think a M block
 Pantara was ever built.
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windsordeath
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« Reply #11 on: May 13, 2011, 06:51:33 am »

Enlightening
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scienceguy
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« Reply #12 on: May 13, 2011, 10:26:40 am »

  Yes the dual bolt patern was on some of the 75 blocks! The reason was to bolt the Pantara trans axel to a m block ,these are rare not something you find every day .

That wasn't the reason, and I believe they were 1973 blocks...  and people used them as 351C strokers before all the cheap Chinese stroker kits came out. 

That being said...  I was at the auto parts store the other day, and a guy was there that said he had a 1985 Ford Motorhome that was equipped with a 351M/400...  and it had a 4bbl!

Does anybody know if this is a possibility?  I do know that vans/motorhomes often lag behind the first line trucks, but a 351M/400 AND a 4bbl???   He seemed pretty legit, and was putting the engine in a bronco with 2-1/2 ton military axles. 
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1966 Mustang, Toploader 4-speed
Pump Gas, Flat Tappet 306
9.88 @ 135.67
windsordeath
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« Reply #13 on: May 13, 2011, 11:13:40 am »

I was thinking it to be a bit of a lame reason.. what's your "speculation" as to why they had dual bolt patterns?
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windsordeath
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« Reply #14 on: May 13, 2011, 11:15:08 am »

LOL.. wasn't there somebody running around "spanking peepees" for spreading misinformation?
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