magnum manifolds/340 manifolds

tomswheels said
I've had all three, Doug's, TTIs new shorties, and Trebligs manifolds and can tell you some of my situations. The Doug's will never work with a Z-bar setup, so if you ever want to convert to a 4 speed they shouldn't be used. The Doug's also rubbed on my passenger steering arm, and were very close to the steering knuckle. The TTIs can clear a Z bar and fit nicely, but they are very close to the steering knuckle as well and the drivers torsion bar is right where they exit. All the other cheap headers I've seen don't fit well. Trebligs manifolds are the best fitting option, hands down.

Thanks Tom!! I wasn't going to say anything but although many of the stock manifolds have been tested (and I've seen the tests) no one has ever tested the "machined" 360 magnum I sell. Since I machine them there has to be some increase in flow but without a dyno I can't really say how much but the size of the exhaust hole is increased a considerable amount. Either way....some members just prefer headers, I myself have never liked headers unless it's a drag car. I've had so much hassle with headers scraping on the speed bumps, header leaks and having to dent them to clear other parts. But the biggest headache is the coatings. I paid big buck for jet hot coating (inside and out) and it only lasted 2 years. It's probably the high humidity and high heat where I live. And yes, they will re-coat them for free but then you have to remove them and re-install them. I have better things to do as I get older especially since my car is a daily driver!!! Anyway, thanks again for the kind words. I have many sets of manifolds in stock and getting ready for the summer orders. I now also carry the small hole (1 7/8") 340 for the early As and even asking for volunteers to try the late 60s 340 manifolds on an early A to try help out the smaller A bodies with manifold options.

treblig