What fuel for 408

Posted By: moparman89

What fuel for 408 - 05/05/14 11:57 PM

I'd just like to get some thoughts on what fuel you would run for this combination.
408"
10.7-1 comp
RHS iron head
236/242 .600/.600 110
Holley 830
Spins 6500ish
Street/strip

Posted By: MR_P_BODY

Re: What fuel for 408 - 05/06/14 12:46 AM

Whats your cranking pressure

Posted By: moparman89

Re: What fuel for 408 - 05/06/14 02:33 PM

Havent tested cranking pressure yet

Posted By: D-50

Re: What fuel for 408 - 05/07/14 02:47 AM

I have a 394 and it has 191-200 cranking comp. and aluminum heads and I run nothing but 93 octane.

Attached picture 8136538-CIMG0081.JPG

Posted By: viperblue72

Re: What fuel for 408 - 05/07/14 06:48 AM

I think you will ping at that ratio with iron heads and that small of a camshaft.
I think you can run pump premium and throw in a gallon or 2 of 110 with each tank.

Posted By: 383man

Re: What fuel for 408 - 05/07/14 05:55 PM

I dont know if your eng has quench as that would help. I have quench and aluminum heads and at 10.6 comp I run fine on 92 pump. Ron