I talked to the owner of Mat's Speed Shop in Halingen Texas today and he told me that the Flowtech Shorty Headers hehad there were 1 5/8 primaries and he had the Y Pipe for them and would sell them for about $230 tax included....what do you guys think..do Flowtech's come with 1 5/8 primaries and what would be be better...the Flowtech's or some Heddman's?.....AARON

 

Available in 1-1/2" primaries only for 3rd gen chassis.

 

5 7 kid is right, they only come in the small size. Most people won't agree with this, but the fact is that on a mildly modified or mostly stock engine these would most likely make more power for you than something bigger, like 1 5/8 or 3/4. It all just depends on what the rest of your combo is, or for that matter, will be someday. I coulnd't be happier with mine, take a peek.

 

Small primary headers don't make more power, they make more torque lower in the RPM band. If your cam/heads/induction peak out at about 5000 RPMs, the 1-1/2" primary tube headers are fine for a 350. Otherwise, go with 1-5/8", and loosen up the stall and up the gear ratio to make up for the lowered torque at low RPMs.

By the way, Vicious, is that "Matt's" shop in "Harlingen", TX?

 

yup

 

I have them and I hate them. The only reason why I hate them is because of the way the collector flange hooks up. Mine is so bent I have a little exhaust leak there that cannot be fixed no matter what I try. You will need quality gaskets, the ones in the kit will last about 4 days. The 1.5" primaries don't bother me, and the fit and ceramic coating was fine, just the damn collectors. i belive a ball flange header is the way to go because it aloows a slight miss allignment of the y pipe and still seal corectly. The performance on these headers was nice but I would choose hedmans. I am looking into the hedmans now as a replacment for the flowtechs but I cannot find out if they have a ball flange collector. If they do, then I am sold. I just can't afford SLP's and some coated hedmans would cost about the same as the flowtechs, but come with bigger primaries, and potentially a ball flange collector. Just my 2 cents.