I see that Motordyne offers their Plemum Spacer with or without Isothermal, also AAM dosen't offer an isothermal at all with theirs, is this thing really that important?

 

I just bought the motordyne spacer w/isothermal b/c with how hot it gets here. If you do any sort of racing I'd say get it as its supposed to help alleviate heatsoak. plus its only $40 more.

 

I already had the AAM spacer when the Isothermal stuff came out. I got the Isothermal "upgrade" which is everything but the spacer and it works great.

 

well, if you can spare the money, get the gasket. if you're really on the fence about it....dont get it. i have it and i will testify in court that it works. but its not rated at any HP, so its mainly for heat-soak issues.

it gets hot in TX