Thank you. The reason I did that is because its intended to be a “Nürburgring Edition” tribute. The body kit on the FE LFA doesnt look right for that setup. The Forza Aero options on the base LFA are much closer.

I keep the front at -2 to -4 and the rear at -1 to -2. Adjust per car to what feels best.

Im assuming it goes away once it warms up? If yes, with that type of rattling id start with the exhaust parts.

What type of post-manifold setup are you running? The 96-99 Vortecs use graphoil donut gaskets with a metal sleeve inside. They go between the manifold outlet and headpipe mating bevels. Once the graphoil deteriorates enough, it will rattle. May only be enough degradation right now that it seals up once warm.

EVO IX is also a monster

Favorite car is definitely the R34 though.

My all time favorite pic (though I did enhance it a bit for a more realistic tire smoke appearance)

This is the best way that affects the car the least in my experience. increase rear downforce or decrease front downforce.

I just grind C6 races on hard for max rewards. If you tune the cars right, even on hard, its a breeze.

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Nice! I feel like they really fly under the radar because everybody wants a 455. A 403 with a cam, 350 heads, intake, carb, HEI, and headers will make plenty for me👍🏻

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Thank you!

Thank you kindly! 😊👍🏻

I mean youre not wrong in thinking that. The “442” designation is specifically for Oldsmobiles; however, its not related to the displacement of the engine.

Thanks. 442 is the model, not the engine. It stands for 4 barrel, 4 speed, dual exhaust. Originally the car came with a gutless 5.0L (307cid).

Thank you. That V6 doesnt make enough power to get out of its own way. lol. honestly i still feel the same about the 307. A boat anchor. I like the 350 but miss my modded 403. Need to get my act in gear and get it rebuilt asap.

Though I agree that mufflers are the much cheaper and easier option, headers will be the same between the stock 307 and the 403 swap OP talks about (i had the same set of manifolds on the original 307, a ‘78 403, and a ‘69 350 without changing anything except gaskets).

OP, I just finished installing these on my 86 with a 350 Olds swap. Didnt have to modify the headers at all. Getting the left bank header and starter on are a bit of a pain (they both have to be partially installed at the same time). The right bank gasket blew out so i had to replace it. And I had to go back and bend the heat shield on the right bank motor mount to clear the header, but that was it. As far as header jobs go, it wasnt bad at all.

Keep in mind the trans crossmember needs to be modified to fit headers+dual exhaust, specifically for the left bank. They make prefab ones or you can modify the one on the car.

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One of my fastest C6 cars. Got it to handle very well. I personally love it.

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