346 vs 408 and build ?
346 vs 408 and build ? So I have my motor all spec'd out. Right now I am running a forged 347 with prc 5.3's and a 224/230 cam. My question is am I going to notice a $5k difference(after selling my motor) between the 2 motors? If it is a big difference it is justified. If not I will keep the 347. Here are the specs
TSP LQ4 408
PRC CNC LS3 heads milled to yield 11.5:1
LS3 intake with 92mm TB
236/242 .600/.610 112+2
Also any guesses on hp?
TSP LQ4 408
PRC CNC LS3 heads milled to yield 11.5:1
LS3 intake with 92mm TB
236/242 .600/.610 112+2
Also any guesses on hp?
How much power are you making now? Id guess 425 or so. That 408 setup should make 500-525. So about 100rwhp more for $5000. Plus 408 should have huge gains in the low - midrange as well.
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I can tell you it was worth every penny I spent on my 408, and I'd do it again. Plus you might even look at going with a bigger cam, the larger cubes really eat up duration....that 236/242 would have somewhere near the manners of a 224 in a stock cube motor.....but then again it depends on what car It's going in, and what you plans are for it.
I can tell you it was worth every penny I spent on my 408, and I'd do it again. Plus you might even look at going with a bigger cam, the larger cubes really eat up duration....that 236/242 would have somewhere near the manners of a 224 in a stock cube motor.....but then again it depends on what car It's going in, and what you plans are for it.
This guy has a very similar setup to your 408. Heres his setup.
https://ls1tech.com/forums/generatio...102-102-a.html
https://ls1tech.com/forums/generatio...102-102-a.html
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Having cubic inches and a min 4.000" bore are huge advantages. Cam and heads are spec'ed to the motor. A large cam for a 346 will most times be tame for that motor so what you pick would be different.
I still have regrets on not going on a 408 on my last rebuild.. Next time, I dont care what happens or about my budget, it will be a huge 440 stroker LOL.
Go for a 408..
I went with nitrous to keep up with the big boys! but I dont wanna know what a stroker with nitrous feels like!!
Go for a 408..
I went with nitrous to keep up with the big boys! but I dont wanna know what a stroker with nitrous feels like!!
I know exhaust/induction seems to be a huge factor on stroker engine. Some plp get good numbers, close to 500rwhp, but some other plp are stuck around 450rwhp without bigger exhaust/induction setup.
What is your setup?
What is your setup?
