help me pick!!! 364 vs 408 procharged
I think you need to figure out what your goals are and go from there. Bigger always has more potential whether it's power or problems. I'm shooting for 800whp with my 364 D1sc with 91/meth and plan to put a lot of street miles on it. Wanted a 408 as well but limited budget and seeing other friends getting little mileage out of their 408's pointed me 364 route.
I think you need to figure out what your goals are and go from there. Bigger always has more potential whether it's power or problems. I'm shooting for 800whp with my 364 D1sc with 91/meth and plan to put a lot of street miles on it. Wanted a 408 as well but limited budget and seeing other friends getting little mileage out of their 408's pointed me 364 route.
I think you need to figure out what your goals are and go from there. Bigger always has more potential whether it's power or problems. I'm shooting for 800whp with my 364 D1sc with 91/meth and plan to put a lot of street miles on it. Wanted a 408 as well but limited budget and seeing other friends getting little mileage out of their 408's pointed me 364 route.
Trust me, you are not going to be unhappy with the low end torque or throttle response.
I have a TiAL blow off valve, and I put in a lighter than recommended spring, which means it closes with less throttle input, so at as little at 25% throttle, at 2200rpm, it closes, and I'm making boost. Might not be a lot, but it's like 1.5-2psi, which makes the car feel amazing... even 'lugging' in 4th or 5th gear.
It's not like a turbo that experiences some lag down low, with my car, and all procharged cars, the throttle response is amazing. Trust me, you're not going to be looking for more or quicker boost.
Here's the data log from my dyno sheet above. Look at the purple line in the 4th section, that's boost. It comes in quick, and linear. I'm actually hitting a bottle neck with my ebay intercooler at around 10psi.
Remember, if boost comes on too quick, I sure hope you have the tire under the car and the suspension to handle it, if not, it's just wasted tire spin.
I have a TiAL blow off valve, and I put in a lighter than recommended spring, which means it closes with less throttle input, so at as little at 25% throttle, at 2200rpm, it closes, and I'm making boost. Might not be a lot, but it's like 1.5-2psi, which makes the car feel amazing... even 'lugging' in 4th or 5th gear.
It's not like a turbo that experiences some lag down low, with my car, and all procharged cars, the throttle response is amazing. Trust me, you're not going to be looking for more or quicker boost.
Here's the data log from my dyno sheet above. Look at the purple line in the 4th section, that's boost. It comes in quick, and linear. I'm actually hitting a bottle neck with my ebay intercooler at around 10psi.
Remember, if boost comes on too quick, I sure hope you have the tire under the car and the suspension to handle it, if not, it's just wasted tire spin.
Every combination is different but yes, a few lbs in both the mid and upper rpm. 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
Which Ebay intercooler do you have? Bob
__________________
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
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 run a 13 lbs on a 408 with 10.3 compression 93 pump and meth. the motor already built...personally I would have went with a LSA crankshaft forged 3.70 for dependability/longevity.
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Verdad Gallardo Trust me, you are not going to be unhappy with the low end torque or throttle response.
I have a TiAL blow off valve, and I put in a lighter than recommended spring, which means it closes with less throttle input, so at as little at 25% throttle, at 2200rpm, it closes, and I'm making boost. Might not be a lot, but it's like 1.5-2psi, which makes the car feel amazing... even 'lugging' in 4th or 5th gear.
It's not like a turbo that experiences some lag down low, with my car, and all procharged cars, the throttle response is amazing. Trust me, you're not going to be looking for more or quicker boost.
Here's the data log from my dyno sheet above. Look at the purple line in the 4th section, that's boost. It comes in quick, and linear. I'm actually hitting a bottle neck with my ebay intercooler at around 10psi.
Remember, if boost comes on too quick, I sure hope you have the tire under the car and the suspension to handle it, if not, it's just wasted tire spin.
I have a TiAL blow off valve, and I put in a lighter than recommended spring, which means it closes with less throttle input, so at as little at 25% throttle, at 2200rpm, it closes, and I'm making boost. Might not be a lot, but it's like 1.5-2psi, which makes the car feel amazing... even 'lugging' in 4th or 5th gear.
It's not like a turbo that experiences some lag down low, with my car, and all procharged cars, the throttle response is amazing. Trust me, you're not going to be looking for more or quicker boost.
Here's the data log from my dyno sheet above. Look at the purple line in the 4th section, that's boost. It comes in quick, and linear. I'm actually hitting a bottle neck with my ebay intercooler at around 10psi.
Remember, if boost comes on too quick, I sure hope you have the tire under the car and the suspension to handle it, if not, it's just wasted tire spin.
Longer stroke cause extra wear. The 4" stroke brings the pistons slightly out of the cylinder since the lq4/9 blocks have shorter cylinders than others and can cause the pistons to rock and extra wear on side skirts.
I'm not sure on actual mileage but these motors were abused a lot and ran when taken apart but excessive wear was found on pistons. Both 1000whp
I'm not sure on actual mileage but these motors were abused a lot and ran when taken apart but excessive wear was found on pistons. Both 1000whp
Longer stroke cause extra wear. The 4" stroke brings the pistons slightly out of the cylinder since the lq4/9 blocks have shorter cylinders than others and can cause the pistons to rock and extra wear on side skirts.
I'm not sure on actual mileage but these motors were abused a lot and ran when taken apart but excessive wear was found on pistons. Both 1000whp
I'm not sure on actual mileage but these motors were abused a lot and ran when taken apart but excessive wear was found on pistons. Both 1000whp
Fact is, how many miles are you going to put on a 700+ hp car each year? To me, I love the extra low end torque the extra cubes offer me.
When I spec'd out my setup with Kyle @ TMS, we talked about that, and the fact is I drive my car about 1,000 miles a year, so if I get 10,000 miles out of the pistons, I think I'm comfortable doing an inexpensive rebuild after 10 years. I'm not saying the wear will be bad at 10,000 miles, but just tossing out a random number.
Fact is, how many miles are you going to put on a 700+ hp car each year? To me, I love the extra low end torque the extra cubes offer me.
Fact is, how many miles are you going to put on a 700+ hp car each year? To me, I love the extra low end torque the extra cubes offer me.
In that case I would go with the shorter stroke. Bob
__________________
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
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
Joined: Mar 2007
Posts: 1,148
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From: Saskatchewan, Canada - where arguing "DA" is for the slow and weak...
In our D1SC'd TBSS (stockish LS2 (LS9 cam and Holley Mid-Rise intake)) we are running it with a 3.85" pulley and a wastegate (set to 7psi) to get the boost in quicker, and the logs are very favourable. Currently we are running 91 pump (0% ethanol) and propane injection; I will be installing a FlexFuel sensor shortly and looking to move to a 20-30% ethanol blend (topped off with propane) to allow for increased timing around MBT. Stupid Winter blend gas.
Run what you have with your preferred head unit and build something else on the side.
Run what you have with your preferred head unit and build something else on the side.
