help me pick!!! 364 vs 408 procharged
help me pick!!! 364 vs 408 procharged I am having a hard to deciding what to do, i was thinking 416 n/a build installed of boost for more reliability. But just can't see myself going without boost! This is where I'm at currently. My car currently has a 6.0L, ported 243 heads, ls6 intake. I am wanting to go with a pro charger. This will mainly be a street car. Not a DD. 3.73 gear s60 rear end with a magnum 6 speed. 91 octane with meth. I have narrowed it down to 2 different options:
Option A (cheaper option)
slap forged pistons and rods, and use the stock crank in the 6.0 and hit it with idk 8-12psi boost. I want to make at least 600 rwhp. reuse my current heads and intake. Custom martin smallwood cam.
Option B:
stroke the 6.0 into a 408 and hit it with 8-12psi boost and make 700+??? Reuse my current heads and intake for this also. custom martin smallwood cam.
Ive never driven a 6 speed pro charged car so don't really know how either one will act. My fear with the 6.0 is it not having enough low end torque, but it will be quite a bit cheaper. Help me decide! I only want to do this once. Car will probably see 5-8,000 miles per year.
Option A (cheaper option)
slap forged pistons and rods, and use the stock crank in the 6.0 and hit it with idk 8-12psi boost. I want to make at least 600 rwhp. reuse my current heads and intake. Custom martin smallwood cam.
Option B:
stroke the 6.0 into a 408 and hit it with 8-12psi boost and make 700+??? Reuse my current heads and intake for this also. custom martin smallwood cam.
Ive never driven a 6 speed pro charged car so don't really know how either one will act. My fear with the 6.0 is it not having enough low end torque, but it will be quite a bit cheaper. Help me decide! I only want to do this once. Car will probably see 5-8,000 miles per year.
I went with a stock bore 364 with f1, meth, 243 heads and 12 lbs and I'm making 650bhp that's with the stock crank and forged everything else... Got plenty low end torque for the street. I had to decide as you did and I like it, gives me piece of mind having the block thicker and now I'm thinking about pulleying down and making around 18-20 lbs. trying to get a aster bracket to work to eliminate belt slip over 12lbs. I also have a ls1 intake and about to switch to a ls6
I went with a stock bore 364 with f1, meth, 243 heads and 12 lbs and I'm making 650bhp that's with the stock crank and forged everything else... Got plenty low end torque for the street. I had to decide as you did and I like it, gives me piece of mind having the block thicker and now I'm thinking about pulleying down and making around 18-20 lbs. trying to get a aster bracket to work to eliminate belt slip over 12lbs. I also have a ls1 intake and about to switch to a ls6
If your budget can afford I would go 408ci. If not a 364ci in the 10-10.5 compression range will still have plenty of low end power. I have had a low compression 347ci and a now a 10.1:1 compression 383ci Procharged 6 speed street car. The higher compression made all the difference in all driving conditions out of boost. Car has all kinds of power again in the lower RPM's and then comes to life fast when the boost kicks in. For a Procharged street car I wouldn't consider running anything less than 10:1 again.
What do you have in the car as far as exhaust ?
What do you have in the car as far as exhaust ?
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If your budget can afford I would go 408ci. If not a 364ci in the 10-10.5 compression range will still have plenty of low end power. I have had a low compression 347ci and a now a 10.1:1 compression 383ci Procharged 6 speed street car. The higher compression made all the difference in all driving conditions out of boost. Car has all kinds of power again in the lower RPM's and then comes to life fast when the boost kicks in. For a Procharged street car I wouldn't consider running anything less than 10:1 again.
What do you have in the car as far as exhaust ?
What do you have in the car as far as exhaust ?
Planning to run kooks 1 7/8 headers and kooks true duals.
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A lot of people has successfully done 9.5/1 with 91 octane and methanol. I'd go that route if you can't get 93 octane. Bob
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ATI ProCharger and Moser Sales 260 672-2076
PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
I'm on 10.1:1 compression with 91/meth. I have the car tuned on pump gas only and the meth comes on at 4 psi for some added safety. Its not part of my fueling. No knock or detonation, A/F is 11.5 until the meth comes on, then drops close to 11 in the higher rpm's.
That's good to see! Are you using 100% methanol? Bob
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E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
ATI ProCharger and Moser Sales 260 672-2076
PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
If you're not trying to spend a ton of money, that's what I would do. The stock crank should be just fine at the power levels you're looking to make. My long term goal for my car is to add a D1SC. I'll probably try to keep all the stock internals though. I've seen it done a lot if you have a good tune, run good gas, and don't try and get too greedy.
I only can get 91. Idk I'd just rather do it a little stronger the first time. i have to change the heads of I go that route . It's currently sitting at 10.7:1
If you're not trying to spend a ton of money, that's what I would do. The stock crank should be just fine at the power levels you're looking to make. My long term goal for my car is to add a D1SC. I'll probably try to keep all the stock internals though. I've seen it done a lot if you have a good tune, run good gas, and don't try and get too greedy.
Then by all means drop in forged pistons and rods. Have you done the math yet to see how much more a 408 would be? Hell, if you're going to do that, why not do something like a 416ci setup? It's probably not much more than doing a 408ci.