I have found two companies that make tha sb chevy 350 thydro trans headers for my 59 GMC. Doug Thorley Tri y (327y) and Sanderson shorty(cc3). What have Ya'll used and how did the install go? I plan on using cd motor and tranny crossmembers and keeping most all off the stock chassis stuff, but using the chassis mounted power brake kit. Thanks Jim
Try Heddman. Tri-Ys are expensive and not much better than the "rams horn" style stock manifolds. You might also take a look at the tubular style triple-y hedders that are in the Summit catalog that carry the Summit brand name. If you have to go triple-Y at least the Summit ones are a good deal ($75 for the set). I doubt you could find a pair of the large outlet stock rams-horn manafolds for $75. The Heddman site has a lot more comprehensive listing than the Jegs, Summit and PAW catalogs. I just put hedders in a '68 with a manual 3-speed. The clutch linkage requires a special drivers side hedder. I used a more common application and adapted the clutch linkage as needed. For significantly less than the special hedders cost I was able to get the high-end ones that have the coating and the ball type flanges. My point here is that you can probably find standard (read: not too expensive) long-tube hedders that can be made to fit with little bit of extra work.
