300 six piston question

Blue2Ghost · Post by **Blue2Ghost** » Thu Aug 21, 2008 9:55 am

Hi, I have searched the forums and did not find this info. If I missed it, sorry. I have built many V8 propane engines for trucks and towing but never a 300 six. I never run less than 11.0 to 1 actual compression ratio. Propane is 112 to 116 octane. My question is: are there any good options for high compression pistons for a 300 six? I am a hobby machinist with decent equipment and can mill piston tops, etc. but I can find no conclusive info. I have heard rumors of people using 351W or 390 FE pistons with mods. I am having trouble finding specs on piston compression height. Any info will help. Thanks!

spartman · Post by **spartman** » Thu Aug 21, 2008 9:59 am

fordsix.com would probably give you your best info.

I have heard of people taking 352FE pistons and shaving .050 off the top to get some stellar compression ratios in 300's

Blue2Ghost · Post by **Blue2Ghost** » Thu Aug 21, 2008 10:19 am

Thankyou very much! I found just what I needed!

spartman · Post by **spartman** » Thu Aug 21, 2008 10:41 am

no problem

j41385 · Post by **j41385** » Thu Aug 21, 2008 3:27 pm

I used Ross Forged Pistons. They make them for 300.

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300 six piston question

300 six piston question

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