Time to put new headers on.

Ones I am looking at are either "Hooker comp" 2" with 3 1/2" collectors, or "Hedman" 2" with 3" collectors.

These will be going in a 72 with a 454. Any fit problems I should know about. I am going from 1 3/4" with 3" collectors now.

Thanks

Put 2" hookers on my friends 69 elco no problems headmans on my 69 malibu ditto both have power steering. elco has power brakes. #7 plug change on elco is tight do to brake booster. smile.gif

I put the hookers on my 72 wagon with BBC, Passenger side went in fine from bottom. Drivers side had to be jacked a little, and I had to move my proportioning vlv and ding one of the tubes to clear the mounting point on the lower control arm. Other than that I had no probs. Just had to take the one in/out a couple of times.

I USED THE HEADMANS ON MY 71 B/B FIT PERFECTLY, NO HAMMER REQUIRED, OR MOVING ANYTHING, CAN'T BEAT THEM FOR THE PRICE ROB...

Why are you going to 2" tubes? 1.75" tubes will get your low 12 second time slip or high 11 second time slip, or even a mid low 10 second time slip tongue.gif I think that you'll find the larger tube headers will also drag the ground more often, I used to run Hookers 2"x3.5" on my car,the lower tubes were getting smashed graemlins/thumbsup.gif but my car may sit a little lower in front than yours.

Shawn, ditto what Robert said. With your cam and rpm range, BlackJack( Dynomax), or SUMMIT 1.75"/3" pipes are defintely a better match. The Summitts are $80 USD but some needing to be painted or coated. Dynos are coated for $220 I beleive.

Shaun,ditto to Bob and Gene's statement..you don't want or need a 2" primary tube header

thanks guys smile.gif .

Guess I have to re think this :rolleyes:

The reason for going bigger was that I have put bigger valves in this winter and cleaned the heads of the cast flashing and polished the exhaust ports. So I thought doing that I would need bigger tubes. Guess I'm wrong :( .

Better to find out now than after buying the wrong ones so thanks again graemlins/thumbsup.gif

Shaun, the 2" primaries will push the peak header torque on a 454 to somewhere around 4500, that's only 1000 less than your redline and well above converter stall.

This must be one of those times "Big is not better" ;)

For sure Shaun. When I swapped the pos small tubes for the 2" Hookers, immediately noticed it took more throttle to come off a stop. Of course, on the other end, above 5000, and particularly from just below 6000 on up, it roared. But with 3.31s and a Muncie, not a good exchange. Of course, with a 5 speed, or the equivalent of 4.33s, 5000 comes up so fast it doesnt really matter anymore. And the car is ET'ing a lot lower than the 'small is better' crowd predicted.

Its all about the interaction of the components.

Plus you just saved not only ET, but $$$. 2" coated Hookers are EXPENSIVE. Of course, daddy told me never to waste money on cheap Hooekrs anyhow. ;)