New Stuff

[Plante]

Just installed Thorley ceramic coated 'long' headers and an Edlebrock intake manifold to go under a 750cfm Edlebrock Carb on my '78 440.  WOW!!  Don't know the gas mileage yet, but it can easily pick up speed going uphill.

[Larry C]

Let us know the gas mileage when you find out. Also would be interested in the before gas mileage.

[EKS]

Were the headers coated both inside and outside?
Thanks for the info

[Plante]

I called Thorley about the coating.  They are chrome plated but not ceramic coated.  They do not make ceramic coated headers.  You can get them ceramic coated for about $300 from other vendors.  However, they 'guaranteed' me that these headers will run cooler than the stock manifolds.  They cost me $498.  They were fairly easy to install and when installed there is more room between the headers and the side of the doghouse opening than the original manifolds.  I did have to remove the starter and loosen the large nut on the passenger side motor mount to raise the motor a couple inches.  Also, these headers are a couple feet longer than the original manifolds so be prepared for additional exhaust work.