540 stroker ??

[Highbanked Hauler]

   Questions again,  I have been talking to a guy who has a 440 stroked to 540, OK The engine has a 7-1  CR. I asked why and he said its to get the 540 stroke. Is that possibly true or is he blowing smoke. The price is 3500 which i thought was low for all the work that had been done...   Thanks..

[BSB67]

The only logical reason one would build a 7:1 CR 540 is because they wanted too, for what ever reason.

[tan top]

The only logical reason one would build a 7:1 CR 540 is because they wanted too, for what ever reason.

a 540 in a  OEM 440 block  , bet there has been serious clearencing  , for the rods / crank !! going on , !  to the bottom of the bores & oil  pick up cast boss ! prolly running an external oil line for that kind of stroke  
 building a motor that big stroke  , is putting a lot of stress on  a stock OEM 440 , needs ductile iron main caps & block girdle ,  
maybe ok with out , for a while  , or longer    if your not going to take if over 55 hundred !  & just use it for low down  torque

[suntech]

The low CR could be that it was planned to run it with a blower, and high boost

[Cooter]

Never ceases to amaze me how little people know bout Stall Converters, Dome psitons[pop ups!?], and stroker engines. Sounds like your guy might be full-ochit as they say....Only one way to find out..Ask him to pull the oil pan and snap some pics of his engine if it's out of the car.


"I had to build it @ 7.1:1 compression to get the 540 C.I. out of it"..."I only bought the stroker crank/rods cause they came with the pistons and decided to mill off the tops until the compression droped enough to run on Grandpappy's cough syrup"...
"I got one dem 440 Hemi's out in the shed too. It has 25.4:1 compression Special, "Diesel" pistons in it." "We dyno'd it out and it made 5689 HP at the wheels of course, cause I just saw where saying 1000 HP at the wheels on YouTube ain't cool no more"...

[Highbanked Hauler]

The low CR could be that it was planned to run it with a blower, and high boost

     That was the only thing I could think of. I also thought the price was a little slight for all that was done to it when you see a rebuilt 440 go for 5-8 K   and a crate motor for up to 10K  Iam not pressed for a motor so I just keep watching and learning. 

[mauve66]

hawaii racing sells the short block 520 and 540 on ebay for 3200-3500, i've always been told that the 520 would be ok in a stock block but the 540 would be pushing it a little if you put NOS to it also, read somewhere that a 540 in a stock block needs to stay below 600hp or you might as well get a mega block

[69charger440]

He is not talking about compression. I think the guy is refering to the rod length. (7.100) Just a thought!!

[Chryco Psycho]

I like to stay around 512 CI for a street duty / long life build
the 7.1" rod is normal so that could be the misunderstanding for sure

[Highbanked Hauler]

I like to stay around 512 CI for a street duty / long life build
the 7.1" rod is normal so that could be the misunderstanding for sure

   Thats why I am here asking questions.. I am not up on engines, collision and paint yes HP, no..    

  Just checked again  and ( YA'LL ARE RIGHT)  It is rod length.. I'll learn someday!!!!!!!

[69charger440]

I like to stay around 512 CI for a street duty / long life build
the 7.1" rod is normal so that could be the misunderstanding for sure

   Thats why I am here asking questions.. I am not up on engines, collision and paint yes HP, no..    

  Just checked again  and ( YA'LL ARE RIGHT)  It is rod length.. I'll learn someday!!!!!!!

Glad we could be of help!!!