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What's the most standard bore & stroke to make a 470 ci engine from a 400 block

Started by 1Bad70Charger, September 25, 2010, 10:29:11 PM

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1Bad70Charger

What is the standard bore and stroke used on a 400 cubic inch engine to achieve 470 cubes?

I believe a 400 engine block with a stock 440 crank will yield 451ci

Thanks in advance! :cheers:
48 year old Self Employed Trial Lawyer (I fight the ambulance chasers); 1969 Plymouth Roadrunner A12 Tribute Car, Built 505ci; Silver 2008 Hemi Dodge Challenger SRT8, Black 2006 Corvette Z06 427ci LS7-Keep God First, Family Second and Horsepower Third.  Interests:  God, Fast American Cars (old and new), Classic Muscle Cars, German Sheperds, Guns, Animals and the Great Outdoors (sick of Chicago).

Nacho-RT74

Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

1Bad70Charger

Quote from: Nacho-RT74 on September 25, 2010, 10:51:25 PM
512 the most... the easier with plain stock parts... 451

So then with a 400 block and stock 440 crank a 451 ci engine is made (and not a 470, correct)?
48 year old Self Employed Trial Lawyer (I fight the ambulance chasers); 1969 Plymouth Roadrunner A12 Tribute Car, Built 505ci; Silver 2008 Hemi Dodge Challenger SRT8, Black 2006 Corvette Z06 427ci LS7-Keep God First, Family Second and Horsepower Third.  Interests:  God, Fast American Cars (old and new), Classic Muscle Cars, German Sheperds, Guns, Animals and the Great Outdoors (sick of Chicago).

69charger440

Quote from: 1Bad70Charger on September 25, 2010, 10:52:50 PM
Quote from: Nacho-RT74 on September 25, 2010, 10:51:25 PM
512 the most... the easier with plain stock parts... 451

So then with a 400 block and stock 440 crank a 451 ci engine is made (and not a 470, correct)?

3.915" stroke/6.535" rods, That is a 470 out of a 400 Block! hope that helps. Check out 440 source they have all the information you will need to pick the right pistons for your compression ratio.

http://www.440source.com/strokerkits.htm
1969 Charger 540 Blown Hemi 1000HP, 69 Road Runner 500 Stroker 665 HP

1Bad70Charger

Quote from: 69charger440 on September 25, 2010, 10:56:49 PM
Quote from: 1Bad70Charger on September 25, 2010, 10:52:50 PM
Quote from: Nacho-RT74 on September 25, 2010, 10:51:25 PM
512 the most... the easier with plain stock parts... 451

So then with a 400 block and stock 440 crank a 451 ci engine is made (and not a 470, correct)?

3.915" stroke/6.535" rods, That is a 470 out of a 400 Block! hope that helps. Check out 440 source they have all the information you will need to pick the right pistons for your compression ratio.

http://www.440source.com/strokerkits.htm



That's exactly the info I was looking for thank you.  :2thumbs:
Out of curiosity what is the stock bore on a 400 ci block?
48 year old Self Employed Trial Lawyer (I fight the ambulance chasers); 1969 Plymouth Roadrunner A12 Tribute Car, Built 505ci; Silver 2008 Hemi Dodge Challenger SRT8, Black 2006 Corvette Z06 427ci LS7-Keep God First, Family Second and Horsepower Third.  Interests:  God, Fast American Cars (old and new), Classic Muscle Cars, German Sheperds, Guns, Animals and the Great Outdoors (sick of Chicago).

Nacho-RT74

Quote from: 1Bad70Charger on September 25, 2010, 10:52:50 PM
Quote from: Nacho-RT74 on September 25, 2010, 10:51:25 PM
512 the most... the easier with plain stock parts... 451

So then with a 400 block and stock 440 crank a 451 ci engine is made (and not a 470, correct)?

400 with 440 and stock rods, no matter if BB or RB, with the right matched piston for the selected rod.

with this basic setup where the only custom part will be the piston.

standart 400 piston is 4.34... 0.020 more than 440 standart piston

then... well, you know the 440source info LOL
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html

69charger440

Quote from: 1Bad70Charger on September 25, 2010, 11:50:31 PM
Quote from: 69charger440 on September 25, 2010, 10:56:49 PM
Quote from: 1Bad70Charger on September 25, 2010, 10:52:50 PM
Quote from: Nacho-RT74 on September 25, 2010, 10:51:25 PM
512 the most... the easier with plain stock parts... 451

So then with a 400 block and stock 440 crank a 451 ci engine is made (and not a 470, correct)?

3.915" stroke/6.535" rods, That is a 470 out of a 400 Block! hope that helps. Check out 440 source they have all the information you will need to pick the right pistons for your compression ratio.

http://www.440source.com/strokerkits.htm



That's exactly the info I was looking for thank you.  :2thumbs:
Out of curiosity what is the stock bore on a 400 ci block?

Your welcome my friend! That is what we are for.
1969 Charger 540 Blown Hemi 1000HP, 69 Road Runner 500 Stroker 665 HP

John_Kunkel


The 3.9" stroke was originally achieved by offset grinding the original Mopar 2.375" rod journal to the Chevrolet 2.20" size and used more common Chevy rods, this combined with a .035" overbore to 4.375" made for 469 inches (rounded off to 470).
Pardon me but my karma just ran over your dogma.

69charger440

Quote from: John_Kunkel on September 26, 2010, 02:46:29 PM

The 3.9" stroke was originally achieved by offset grinding the original Mopar 2.375" rod journal to the Chevrolet 2.20" size and used more common Chevy rods, this combined with a .035" overbore to 4.375" made for 469 inches (rounded off to 470).

Thanks, that is some good Info! Look at the big brains in John!   :cheers:
1969 Charger 540 Blown Hemi 1000HP, 69 Road Runner 500 Stroker 665 HP