I've seem lots of posts online that mention Speed Daddy headers as being one of the more reasonably priced ones, with no major leak issues and such like the Pacesetters.

http://cgi.ebay.com/ebaymotors/GRAND...item27baa3d1ec

Few seem to mention anything about fitment on a Bonneville. Does anyone know if these will fit my car without substantial modification?

I'm getting 6-7* KR at WOT that I need to get rid of, so headers and high-flow cat are first on my list. (I already have 180* tstat, colder plugs, FWI).

You will need a W body dip stick for the tranmission. Other then that, your about set.

I'm 98.9% sure I can find one at a junkyard. How does one remove and install it though? Are they universal (4T65E & 4T65E-HD)? I'm assuming the W body dipstick will still read correctly in an H body.

It has one 10mm bolt holding it to the trans. Yes, it will read right. The bends are just different. Grab the rubber seal from the trans while your getting the dip stick.

Speed daddy headers will fit nicely on your 2k, with no mods, except the w body dipstick. I just finished my install of them



P.*. - Save yourself the frustration and make sure you get the trans dipstick from a 3800 powered car and not a 3100 powered car. Don't ask how I know, just don't ask

3100 != 3800

Hey Pearl, any problems or helpful tips on the rear bank? I have an 01 im installing the same headers on. Thanks

I've found putting them in from the bottom works good.

With speed daddy'* what you will want to do is this.

Order from FrozenBoost.com
2 x 2.25" torca clamps
2 x 3.00" torca clamps (H/C/G depend on how you connect to catback, there is not a standard flange like the W body)
They are in the exhaust hardware section about halfway down the page. $5 a clamp and fast shipping. The clamps SD give you are horrible and dent the pipes.

Pick up an O2 extension harness from Intense-Racing, WBodystore or ZZP. Or you'll have to extend the wiring on your factory harness.

Pick up a w body dipstick tube. As long as the car is 97+ it will work perfectly. A length of extension and a 10mm, you can get it from the top. I haven't found a need for the rubber seal, ihowever t is a good idea to have the spare.

On a W body to install the rear manifold/header you lower the rear of the cradle by 2-3 inches and it'* a simple install.

On an H/G/C body install you shouldn't need to lower the cradle at all. A bit of wiggling.

In all installs. Reuse your factory MLS manifold to head gaskets.
Start the rear header, get the EGR tube into the header and start the bolt. Tighten the rear header to the head fully and tighten the EGR bolt as well.
Put the rear clamp for the crossover in place, insert the crossover, put the front crossover clamp in place and start installing the front header.
As you tighten the front to the head, tap the crossover where the front piece enters it with a rubber mallet. This seats the pipes together and helps them slowly pull themselves together. Tighten a little, tap a little, repeat until the front is fully tightened.
Tighten the two crossover torca clamps.
Install the band clamp for the downpipe and connect to exhaust using the two 3" torca clamps. This downpipe install can be tricky on the H/C/G body as you will have to adapt from the downpipe to the exhaust. There is no W body two bolt flange for the catback. I typically use a 3.00" to 2.50" adapter from Napa.

The only advice I can give is what Bill and Dan said...

I will have to disagree with Bill on one point though...

Based on personal experience, the crossovers meet the stock manifolds in different places on the different engines and the trans dipsticks are bent differently. Stick with a 3800 powered car for your trans dipstick and it'* all good