RyanSws6

iTrader: (72)

I'm finishing my 408 and had a buddy say the gains could be 20hp going to a
1 7/8 headers from my LT hookers. He said great for stock cubes but with the 1 7/8 headers could see some nice gains. I just reached a point I don't want to spend more.

Thinking about the Texas speed 1 7/8 headers...

smok'nZ

iTrader: (160)

IDK about 20rwhp but a good 10 n/a would be more reasonable

1989GTA

"could" is the operative word. You might see a gain, you might not see any gain or maybe even a loss. I think the exhaust gas velocity is the key as to what gains you will see. With a larger tube your exhaust gases will slow down and the key is will that help you, hurt you or have no effect.

RyanSws6

iTrader: (72)

Thanks guys.

GTA I think your right if I were a stock cube Ls1. But at a 408 there's much more air being pushed. I'm just trying to see if the gain is worth it $...

cresswellracing

iTrader: (3)

It would likely move you power band a little higher too. Based on your mods, probly not an issue, but worth mentioning.

MattIROC

iTrader: (19)

Buy them, sell current headers, take the loss in your wallet, and the gain on the dyno. 10-20 rwhp shouldn't be out of the question, especially with the 408.

1989GTA

You are correct with the 408. My mistake.