Step-by-Step Flowtech header Install guide w/ pics

got some final editing to do, my typing isn't the greatest when i've had a few beers - hey i was celebrating a job well done!

flowtech header install guide with pics (http://www.cardomain.com/memberpage/243722/11)

Time to update the sig!

Wow, that install doesn't sound to bad. Hmmmm, I think maybe I won't pay someone to do it for me then.

honestly it was cake compared to what i had been hearing. i was hearing stories of 2 people taking 2-3 days to complete it...i managed it in just over 10hours taking my time. that was spread over 3 days of "after work" work.

there were no hassles that took more than 5min to overcome...well besides having trouble getting damn car high enough...multiple combos of blocks, jacks and jack-stands :mad:

i reccomend it to anyone...it was awesome

Excellent install page!!! The way you described it, I think that I can do this in my garage. Now I just have to get the headers! Thanks!

www.tbyrne.com has them on sale right now...if that helps.

honestly though, i would reccomend changing the motor mounts to prothan poly mounts while you have the manifolds off. it would make it 50x easier than just doing the mounts alone and they are stiffer so that engine twist is minimized (almost eliminated) so that you don't have any clearance problems with the ypipe and frame

Originally posted by jm8881
Wow, that install doesn't sound to bad. Hmmmm, I think maybe I won't pay someone to do it for me then. It's very worth while doing it yourself ... Just make sure you've got everything as well as time .. start early saturday or on a friday afternoon just in case you take a long a$$ time like me ;)

Nice guide btw teke .. just read through it .. wouldn't change a thing.

yeah i think one thing that helped me "mentally" was that i only had 2-3 hours after work each day to work on it. i would set a goal for each day, then usually stop after i met it. goal the first day was to get the plugs, wires, coil pacs off...managed that and to break all the manifold bolts free.

that way i didn't get tired and frustrated.

If it isn't already, I think this post should be a sticky, or put in some archive for possible future CZ28 members...just an idea:D

wow...i take that as a compliment :)

glad to help out some fellow fbody guys...i know how intimidating it was for me to start the project. heck i waited nearly a year to do it cause i was worried about the problems with the install.

Originally posted by teke184
www.tbyrne.com has them on sale right now...if that helps.

honestly though, i would reccomend changing the motor mounts to prothan poly mounts while you have the manifolds off. it would make it 50x easier than just doing the mounts alone and they are stiffer so that engine twist is minimized (almost eliminated) so that you don't have any clearance problems with the ypipe and frame


Is the engine vibratration a lot more than with the original mounts? If it's not that bad, then I will probably replace the mounts when I get my headers. I just need to wait until income tax check comes! Hopefully Tbyrne still has them on sale.

i did the motor mounts and the torque arm mount, and there was NO added vibration.

i would think if you had a rough running engine, say one with a nasty cam, you'd notice it more.

like i say, even if you do notice a little gain, the benefits of your engine barely moving when reved is worth it...specially with tight clearances with the frame that headers and orp's have.

Teke184, from your great write-up, I will assume you installed these on your car. Noticable power difference ? Can you describe the experience for us.

:D yeah i installed them, by myself in the driveway.

describe the power gain you mean? that's not easy.

background: car had everything in the sig, with manifolds, a bassani ORP and a magnaflow muffler. the muffler was connected with tubing that was "compression bent" from a crappy shop. when i removed it i realized that the section over the axle was barely 1/2 the actual 3" dia due to the bend...it sucked.

so now the car has the LTs, orp, a bullet muffler on the end of the ypipe and 3" mandrel bent pipe running over hte axle and ending (where a normal muffler would attatch). considering the restrictions of the manifolds and the crappy pipes, the power gains were HUGE. top end is just down right sick. i would say easily a 25hp gain.

this is far and away the most noticable and enjoyable power gain modification that i have done thus far. the ramair and lid were noticable, but not as much as these headers. and the sound is to die for (basically like a dynomouth but not tips)