440 In an F Article

[Bill Park]

I have a 79 Road Runner that the original owner put a 440 into. It has power steering and a brake booster from a 1988 D150 things are tight but it works he has reworked the headers around the steering box and I feel that it interrupts flow. I have been told by Rick at National Moparts that there is a set of headers available. I have asked him to confirm and price them

 

[Duke5A]

I have a 79 Road Runner that the original owner put a 440 into. It has power steering and a brake booster from a 1988 D150 things are tight but it works he has reworked the headers around the steering box and I feel that it interrupts flow. I have been told by Rick at National Moparts that there is a set of headers available. I have asked him to confirm and price them

What size are the primary tubes and what size outlets? Freiburger proved you can ding the hell out of a set and not impact power.

 

[Bill Park]

What size are the primary tubes and what size outlets? Freiburger proved you can ding the hell out of a set and not impact power.

Interesting were was this report?

 

[Duke5A]

Interesting were was this report?

It was on an episode of Engine Masters. Used to be on YouTube before the corporate owner took Motor Trend behind a paywall.

Found it:

This is why I asked what the dimensions are for the headers you have currently. 1 5/8" primary tubes are good for about 450 HP.

 

[Bill Park]

What size are the primary tubes and what size outlets? Freiburger proved you can ding the hell out of a set and not impact power.

1 7/8 with 3 inch collector

 

[Duke5A]

1 7/8 with 3 inch collector

Same size I run on my 512. Couldn't find anything on the market that would fit, so I ended up having a set made.

 

[Bill Park]

Same size I run on my 512. Couldn't find anything on the market that would fit, so I ended up having a set made.[/QUOTE

HMMMM I think that you just saved me some cash!