***Motor For 900RWHP Setup Needed, Please help???***
Thread Starter
AKA "The CLOWN"
Joined: Feb 2010
Posts: 6,261
Likes: 13
From: Chicago South Suburbs
***Motor For 900RWHP Setup Needed, Please help???***
I am doing my research on a new forged bottom end. My main concern is the short block, I've decided on a new 402, but also thinking what heads would be the best choice? This will be a Novi 2k Boosted motor build to push a lot of boost, 14-20lbs. I have looked at used motors and just want the comfort of a new motor and heads, I want to do this only once, so your input is needed for the best setup?
Also recommendations as to where to get the motor from?
And what would you recommend for head choice?
Also recommendations as to where to get the motor from?
And what would you recommend for head choice?
Last edited by Blitzkrieg; Dec 19, 2011 at 10:21 AM.
Le Mans Master
Joined: Jul 2005
Posts: 7,121
Likes: 3
From: Shreveport/Bossier Louisiana
St. Jude Donor '08
HKE's wait is like 9 months unless you do something similar to what Bret did, and buy it through DallasPerformance. LME is who is building mine right now.
Honestly, where you're located, I'd take a look at AES. I've seen good stuff from them and heard from tuners that their turnaround time is pretty short.
Honestly, where you're located, I'd take a look at AES. I've seen good stuff from them and heard from tuners that their turnaround time is pretty short.
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,226
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Blitz,
1, make up your mind, make a plan and stick to it. you change your mind like the wind.
2, IMO do not go for a HP level as much as an ET goal. 900 rwhp on the street is almost unmanageable regardless of tire used.
3, Dont over cam the car losing drivability for HP, you will not enjoy the car as much in the long run.
4, If you put together a hodge podge of misc parts, I'm not going to tune it for you.
1, make up your mind, make a plan and stick to it. you change your mind like the wind.
2, IMO do not go for a HP level as much as an ET goal. 900 rwhp on the street is almost unmanageable regardless of tire used.
3, Dont over cam the car losing drivability for HP, you will not enjoy the car as much in the long run.
4, If you put together a hodge podge of misc parts, I'm not going to tune it for you.
Thread Starter
AKA "The CLOWN"
Joined: Feb 2010
Posts: 6,261
Likes: 13
From: Chicago South Suburbs
Blitz,
1, make up your mind, make a plan and stick to it. you change your mind like the wind.
2, IMO do not go for a HP level as much as an ET goal. 900 rwhp on the street is almost unmanageable regardless of tire used.
3, Dont over cam the car losing drivability for HP, you will not enjoy the car as much in the long run.
4, If you put together a hodge podge of misc parts, I'm not going to tune it for you.
1, make up your mind, make a plan and stick to it. you change your mind like the wind.
2, IMO do not go for a HP level as much as an ET goal. 900 rwhp on the street is almost unmanageable regardless of tire used.
3, Dont over cam the car losing drivability for HP, you will not enjoy the car as much in the long run.
4, If you put together a hodge podge of misc parts, I'm not going to tune it for you.
I am starting to look into a new bottom end as I'm sure I will not be as lucky as Shawn! It would be nice to have a motor done and waiting in case something were to go boom. I just don't want to wait for months on a new motor if my stocker should blow up, just trying to be prepared for the future!
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,226
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
No worries Doug, I am still going with my stock motor for the spring!
I am starting to look into a new bottom end as I'm sure I will not be as lucky as Shawn! It would be nice to have a motor done and waiting in case something were to go boom. I just don't want to wait for months on a new motor if my stocker should blow up, just trying to be prepared for the future!
I am starting to look into a new bottom end as I'm sure I will not be as lucky as Shawn! It would be nice to have a motor done and waiting in case something were to go boom. I just don't want to wait for months on a new motor if my stocker should blow up, just trying to be prepared for the future!
Good plan!
If I can make a suggestion, dont get wrapped up in big forum numbers. Build the car with a proper combination and you do not need huge power to go really fast. IE, Shawn's car.
What you'll end up with is a more reliable car that does not over power the drive train breaking things left and right, with the ET's your looking for.
I would personally suggest just rods and pistons with our smaller blower cam. Maybe a set of heads, but thats it. STG 1 fuel system, meth injection and an eight rib.
You would easily have a mid nine second car, with stock like driveability and fuel economy that you will enjoy owning.
Burning Brakes
Joined: Mar 2011
Posts: 783
Likes: 2
From: Houston Tx
Good plan!
If I can make a suggestion, dont get wrapped up in big forum numbers. Build the car with a proper combination and you do not need huge power to go really fast. IE, Shawn's car.
What you'll end up with is a more reliable car that does not over power the drive train breaking things left and right, with the ET's your looking for.
I would personally suggest just rods and pistons with our smaller blower cam. Maybe a set of heads, but thats it. STG 1 fuel system, meth injection and an eight rib.
You would easily have a mid nine second car, with stock like driveability and fuel economy that you will enjoy owning.
If I can make a suggestion, dont get wrapped up in big forum numbers. Build the car with a proper combination and you do not need huge power to go really fast. IE, Shawn's car.
What you'll end up with is a more reliable car that does not over power the drive train breaking things left and right, with the ET's your looking for.
I would personally suggest just rods and pistons with our smaller blower cam. Maybe a set of heads, but thats it. STG 1 fuel system, meth injection and an eight rib.
You would easily have a mid nine second car, with stock like driveability and fuel economy that you will enjoy owning.
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Burning Brakes
Joined: Mar 2006
Posts: 1,095
Likes: 5
From: Oldham County Louisville, KY
Figure out your goal for the car. Have Doug, or someone else put together a package to meet that goal. Best part A and best part B don't always make the best combination C.
My car is a straight street fighter and is built to spend it's life over 3500 RPM. Depending on the car, you start to out-power the tires with over 650-700whp. Even drag radials on the street.
If you want 900whp then stick to the Mojave Mile and Silver State classic events.
My car is a straight street fighter and is built to spend it's life over 3500 RPM. Depending on the car, you start to out-power the tires with over 650-700whp. Even drag radials on the street.
If you want 900whp then stick to the Mojave Mile and Silver State classic events.
Drifting
Joined: Aug 2006
Posts: 1,629
Likes: 6
From: Little Rock Arkansas
LS2 402 with AFR 225's. 9.5 to 1
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
Team Owner
Joined: Jan 2007
Posts: 29,065
Likes: 1,839
From: cookeville tennessee
LS2 402 with AFR 225's. 9.5 to 1
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
Le Mans Master
Joined: Jan 2009
Posts: 7,767
Likes: 19
From: East Texas
good combo!
LS2 402 with AFR 225's. 9.5 to 1
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
this is my setup also
Thread Starter
AKA "The CLOWN"
Joined: Feb 2010
Posts: 6,261
Likes: 13
From: Chicago South Suburbs
LS2 402 with AFR 225's. 9.5 to 1
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
How are the TF 235s Vs. AFR 225s? Seems like most prefer the AFRs!
Drifting
Joined: Aug 2006
Posts: 1,629
Likes: 6
From: Little Rock Arkansas
I dont think the 5cc in the intake would be worth much if at all on FI. The AFR 225's have plenty of dyno and track proof behind them to say they work well. The trick flow 235's also work well but will take a set of aftermarket rockers.
Melting Slicks
Joined: Jan 2008
Posts: 2,590
Likes: 48
From: Nathalie VA
St. Jude Donor '15-'16-'17-'18
LS2 402 with AFR 225's. 9.5 to 1
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
Not to big in cubes but not to small. That combo with the right cam and converter will get you 5.80s in the 1/8 all day long in full street trim or 900rw thru a locked auto at 15lbs of boost. I have A Z06 sitting in my garage with that same combo. Engine has never been out of the car since it was built 5 years ago. You can't beat the torque of a stroker. 347 will make that number but torque will be down and thats what you want pealing your head back!
Thread Starter
AKA "The CLOWN"
Joined: Feb 2010
Posts: 6,261
Likes: 13
From: Chicago South Suburbs
Or could you make up the difference with 243s by adding some more boost?
Melting Slicks
Joined: Feb 2006
Posts: 2,163
Likes: 5
From: Houston
It seems to me that at this level, 900rwhp, you can easily put a rotating assembly in there capable of handing the power. Just go with what is proven. The trickier part is getting it assembled correctly which the correct clearances, ring gap, etc. Experienced engine builders have probably gone through some trial and error here. That is just what I've gathered after seeing some local setups and doing some reading.
The block/sleeves become the weak point on these engines. Enough cylinder pressure can make them distort and move. Cracked sleeves are not that uncommon.
I'm going to try my luck with a budget 347 with scat h-beam rods, stock crank, and mahle 4032 pistons. It is far from ideal, but I think it has a chance with the tune dialed in perfect.
I went with the afr 225's. They are proven, and stock rockers work just fine.
The block/sleeves become the weak point on these engines. Enough cylinder pressure can make them distort and move. Cracked sleeves are not that uncommon.
I'm going to try my luck with a budget 347 with scat h-beam rods, stock crank, and mahle 4032 pistons. It is far from ideal, but I think it has a chance with the tune dialed in perfect.
I went with the afr 225's. They are proven, and stock rockers work just fine.
Le Mans Master
Joined: Jan 2009
Posts: 7,767
Likes: 19
From: East Texas
I gained about 75rwhp with the AFRs mine are the 230cc I got them because the deck is thicker better for high boost