Exhaust Manifolds

[Leon]

Looking for headers that will work with lowered Grand Prix's. I read when you lower your WBody certain headers won't fit because your motor is now at a different angle then before...

[ADrugDealer]

Fit as in hit the firewall? If so get shorter dog bones to re-align the motor I suppose. Watch the U-Bend on the Speed Daddy brand ones, may hit the ground. easy fix just reweld it

[Leon]

I have shorter dog bones and anti pogo washers that haven't been installed.
I saw a video of the Speed Daddy headers on a 3800 but not sure what car.
He had issues with the front manifold right up against the radiator fan.

[ADrugDealer]

The headers can run close to the fans, but I never had an issue on my car when I had them.

[ADrugDealer]

1) Buy headers
2) Start install
3) Check clearance with shorter bones
4) Check again with longer Bones
5) Choose the better option
6) Finish install

[Leon]

What headers did you go for?

[ADrugDealer]

SpeedDaddy

[Fivefingerdeathpunch]

I was lowered 1.5in overall and never smacked the downpipe on the ground with speed daddys in the 3-4 years I had them.

Shorter dog bones don't do anything to help you there. Cut and re-weld the downpipe or run it as is.

On 97-03's it will likely hit the fan shroud with shorter dog bones anyway, they are really close even with the stock ones.

[Sudden]

ZZP has a fan spacer kit that moves the fan closer to the radiator for more clearance with headers. It looks like three screws and three washers.

[SgtMarshal]

ZZP has a fan spacer kit that moves the fan closer to the radiator for more clearance with headers. It looks like three screws and three washers.

I installed that spacer kit, and the next day the low coolant light came on, fan had moved too close to the radiator and had worn a hole in it. had to replace the radiator.