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78 ford 400 6.6l newbie

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  #1  
Old 05-25-2018, 08:17 PM
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Clovis123
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78 ford 400 6.6l newbie

OK guys this is my first post. Bronco enthusiast. We have recently acquired a ford 400 6.6l. Wanting to increase the low-end torque i.e. Shaving the deck and boring out the cylinders to a larger size. We have been doing hot rod but 4 x 4 at the same time and looking to increase the low-end torque going to get thumper sound like you would with a cam but addressing the actual compression issues. Anybody have any thoughts? I know with the stock is. I'm not planning on going to get my degree in mathematics LOL was hoping somebody could give him advice for the largest bore to give at least one point plus a better compression any advice would be helpful thank you guys. Now the caveat to all of this is that it's going into a 64 Ranchero sitting on an 85 full-size bronco XLT frame. We think it's an interesting combination and worth doing and worth doing right. Any advice appreciated.
 

Last edited by Clovis123; 05-25-2018 at 08:33 PM. Reason: adding info
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Old 05-25-2018, 10:57 PM
SDDL-UP
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Check out TMeyerINC.com. He has pistons that will bring the compression up to about 9.3:1 and knows A LOT about these engines. More compression and a healthy cam and you might be surprised what the 400 can do.
 

Last edited by SDDL-UP; 06-02-2018 at 12:05 AM. Reason: Tmeyerinc.com
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Old 05-26-2018, 10:02 PM
78Broncoinpieces
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link says the domain name tmeyer is for sale
 
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Old 05-28-2018, 09:44 AM
Redark1
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If you find a set of Aussie heads it will bring up the compression. Mine has flat tops down in the bore at least .060-.090 and I ended up with almost 11to1. Just bore it for a fresh bore and call it good. Work with the cam from there to make power where you want it.
 
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Old 05-29-2018, 05:03 PM
5851a
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  #6  
Old 06-10-2018, 09:02 PM
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aussie heads, roller cam ( no break in like a flat tappet cam) aussie heads will run you about 1000-1500 there on ebay and there is a aussie cylinder hear web site.
 
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