Thread: Ditching the plogs for speed daddys.

So I decided to do headers like I should have done in the first place.

Should I be able to run a 3.4 with some tuning?

I bought an AEM WB too. Would it be a good idea to weld the bung in before the install? If so where?

What HP /ET's do 3.4" set ups usually run?

you should be able to run a 3.4 or 3.6 with tuning as is.

Usually around 220whp. Low 14's, maybe upper 13's, depending on DA.

I would be surprised if you could get away with a 3.4 without any knock issues.

If the WB uses the same threads as a normal O2, SD's already have O2 bungs welded in place.

Originally Posted by MeanGrn99GTP

I bought an AEM WB too. Would it be a good idea to weld the bung in before the install? If so where?

I put my WB sensor in the post cat O2 bung that was already in the pipe. Worked out great.

What size primarys are the SDs?

I welded mine to the side of the goose neck piece. Dragged it through the snow for 2 winters, worked like a champ lol.

I'd suggest pointing it further up or going somewhere else if you plan to run a cat. It must go before the converter. I only went there because I could and I wanted it closer to the exhaust gases exiting the heads, they say like 15-20in away for something like that is generally best.

Originally Posted by MeanGrn99GTP

What size primarys are the SDs?

Big enough, not a concern as they bigger than factory.

Originally Posted by gambler87

When are u doing the header install? I will come down and help and we should NOT header wrap them

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fixed that for ya ^^

never do the wrap, they just rot out.

your killing them from the inside out. its been proven to be a bad idea.

Originally Posted by Scottydoggs

your killing them from the inside out. its been proven to be a bad idea.

Ever seen a set of SD's rust out from wrapping them?

18" from the exhaust port or 36" when using leaded gas , turbo or whenever you anticipate temps higher then 800*

If you do weld a bung , make it at a 10* angle so it's not pointed straight down into the exhaust pipe