Which setup!! HELP!!!
Which setup!! HELP!!! Here is the deal. Im going to do one of two different setups, but being new to the LS1 world... I dont know which to pick. The two options are:
A: 427 stroker 550-600 rwhp (Z07 package) built and installed by MTI in Texas. All motor sounds fun... but I like to drive the car and afraid it will be too much for the street and not as fun to drive. People always say that an all motor car at 600 rwhp is much harder and less enjoyable to drive than a 600 rwhp FI car due to the larger cam and what not. This is whats worrying me about this setup. If I do this setup and it turns out that I like it... then Nitrous will be added on top.
B: Forged 346 with a D1SC making 650-750 rwhp. The problem with this is that im coming from a Kenne Bell Cobra that has instant boost and I loved that. So im told that the lag on a Centrifugal takes a little getting used to and im not sure if I will be happy with that. If I do this... the car will be done by HPE of Houston, TX. I dont want to put a KB on the Vette because im wanting to go with a new setup that Ive never done before.
Is there anyone here with an all motor Vette making 550+ VS. an centrifugal that can shed any light on going with these kinds of setups? Ive got the money and ready to spend it... I just need some help making up my mind.
Daniel
A: 427 stroker 550-600 rwhp (Z07 package) built and installed by MTI in Texas. All motor sounds fun... but I like to drive the car and afraid it will be too much for the street and not as fun to drive. People always say that an all motor car at 600 rwhp is much harder and less enjoyable to drive than a 600 rwhp FI car due to the larger cam and what not. This is whats worrying me about this setup. If I do this setup and it turns out that I like it... then Nitrous will be added on top.
B: Forged 346 with a D1SC making 650-750 rwhp. The problem with this is that im coming from a Kenne Bell Cobra that has instant boost and I loved that. So im told that the lag on a Centrifugal takes a little getting used to and im not sure if I will be happy with that. If I do this... the car will be done by HPE of Houston, TX. I dont want to put a KB on the Vette because im wanting to go with a new setup that Ive never done before.
Is there anyone here with an all motor Vette making 550+ VS. an centrifugal that can shed any light on going with these kinds of setups? Ive got the money and ready to spend it... I just need some help making up my mind.
Daniel
A) The MTI 427 package numbers are flywheel and not rwhp. To get 600 rwhp from a NA motor you will have to have a very large cam, 3" exhaust with no cats, and a great set of heads.
B) To get 650 rwhp out of 346 and a D1 is possible with the right set of heads, cam, and tuning. To get over 650 rwhp you will need a lot of methonal and tuning.
One advantage of the MTI package is that it comes with a 2 year warranty. There is another option to go with:
C) Do the MTI 427 to start out with 53cc 5.3L heads, -20cc pistons, and a mid-level split cam on a 115 or 116 LSA. That will give a compression level of 11.3:1. That should make some power. That should get you in the 500ish rwhp range. Trust me, there is a big difference between 350 rwhp and 500 rwhp.
If you get use to the 500 rwhp and want more, you can swap out the heads for 74cc heads and that will drop your compression level to 9.2:1 which is a nice good FI level. You can put on a D1 and make 700 rwhp easy. If you get use to the 700 rwhp and want more, then you can put on a F1 head unti and make 800 rwhp pretty easy.
If it was me, I would do this route. This is my $0.02 of course and does not buy much
Keith
B) To get 650 rwhp out of 346 and a D1 is possible with the right set of heads, cam, and tuning. To get over 650 rwhp you will need a lot of methonal and tuning.
One advantage of the MTI package is that it comes with a 2 year warranty. There is another option to go with:
C) Do the MTI 427 to start out with 53cc 5.3L heads, -20cc pistons, and a mid-level split cam on a 115 or 116 LSA. That will give a compression level of 11.3:1. That should make some power. That should get you in the 500ish rwhp range. Trust me, there is a big difference between 350 rwhp and 500 rwhp.
If you get use to the 500 rwhp and want more, you can swap out the heads for 74cc heads and that will drop your compression level to 9.2:1 which is a nice good FI level. You can put on a D1 and make 700 rwhp easy. If you get use to the 700 rwhp and want more, then you can put on a F1 head unti and make 800 rwhp pretty easy.
If it was me, I would do this route. This is my $0.02 of course and does not buy much
Keith
Well I live in CA and have not had any issues with the car overheating. It does get hotter than our Z06, but it gets up to 110+ here .I personally would go 347 or even a 408 with a D1 and while out of boost it runs and sounds like a stock Vette. I actually dont run any meth, but I do run race gas. I will be running meth next summer since it will be cheaper in the longrun. I dont think you will be happy with 500whp, so why keep changing the setup. Get the power you want and be done with it, just my .02 cents.
Well I live in CA and have not had any issues with the car overheating. It does get hotter than our Z06, but it gets up to 110+ here .I personally would go 347 or even a 408 with a D1 and while out of boost it runs and sounds like a stock Vette. I actually dont run any meth, but I do run race gas. I will be running meth next summer since it will be cheaper in the longrun. I dont think you will be happy with 500whp, so why keep changing the setup. Get the power you want and be done with it, just my .02 cents.
I just got a quote from MTI for the 347/Procharger setup and it seems quite reasonable. I may do the 408 instead of the 347. Ive talked to a lot of people here that said cooling wouldnt be an issue. So I think im going with this setup.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Well...seeing both sides, face to face... my cousin, has an MTI 427 C5R car. He runs it on motor, and on alot of JUICE. Nothing is like the power that that car makes man,..it's truly crazy, on motor alone. Very NICE to drive,...and alot of fun.
on my 346ci setup,...and my P1-SC, I can pull on that car...not ALOT but,..it's clear that I am pulling a bit. Possibly due to his 3.73 gear,...and my 3.42 but,...regardless, it happens. If he sprays me,...he's gonna rip a hole in the atmosphere...possibly taking my paint with it.
Personally,..I'm really torn between both worlds. Nothing like a built NA motor,...nothing. If your going to run ONLY THE MOTOR (427) with no spray,...I will say, go with the blower and 346 setup. The linear feel of the boost,...is no big deal. you'll like it alot,...just keep your shifts QUICK. Not too many things on the street, will touch it.
on my 346ci setup,...and my P1-SC, I can pull on that car...not ALOT but,..it's clear that I am pulling a bit. Possibly due to his 3.73 gear,...and my 3.42 but,...regardless, it happens. If he sprays me,...he's gonna rip a hole in the atmosphere...possibly taking my paint with it.
Personally,..I'm really torn between both worlds. Nothing like a built NA motor,...nothing. If your going to run ONLY THE MOTOR (427) with no spray,...I will say, go with the blower and 346 setup. The linear feel of the boost,...is no big deal. you'll like it alot,...just keep your shifts QUICK. Not too many things on the street, will touch it.
Well...seeing both sides, face to face... my cousin, has an MTI 427 C5R car. He runs it on motor, and on alot of JUICE. Nothing is like the power that that car makes man,..it's truly crazy, on motor alone. Very NICE to drive,...and alot of fun.
on my 346ci setup,...and my P1-SC, I can pull on that car...not ALOT but,..it's clear that I am pulling a bit. Possibly due to his 3.73 gear,...and my 3.42 but,...regardless, it happens. If he sprays me,...he's gonna rip a hole in the atmosphere...possibly taking my paint with it.
Personally,..I'm really torn between both worlds. Nothing like a built NA motor,...nothing. If your going to run ONLY THE MOTOR (427) with no spray,...I will say, go with the blower and 346 setup. The linear feel of the boost,...is no big deal. you'll like it alot,...just keep your shifts QUICK. Not too many things on the street, will touch it.
on my 346ci setup,...and my P1-SC, I can pull on that car...not ALOT but,..it's clear that I am pulling a bit. Possibly due to his 3.73 gear,...and my 3.42 but,...regardless, it happens. If he sprays me,...he's gonna rip a hole in the atmosphere...possibly taking my paint with it.
Personally,..I'm really torn between both worlds. Nothing like a built NA motor,...nothing. If your going to run ONLY THE MOTOR (427) with no spray,...I will say, go with the blower and 346 setup. The linear feel of the boost,...is no big deal. you'll like it alot,...just keep your shifts QUICK. Not too many things on the street, will touch it.
Thats just it! Im torn between the two. But, Im not a huge fan of the idea of having to turn nitrous on, let the bottle warm, might not have the pressure to use it and so on and so on. Thats kinda why I wanna stick with the blower.
I know the feeling....which is why I went with the blower. I wanted the power, at all times...corners...morning time, night time,...anytime,...etc. Get the blower,...you'll love it.
Well Im waiting to hear back from MTI. They shot me over a quote but im gonna have the 408 done instead of the 347 and had them also add halfshafts and DTE brace. I have another question for you guys. I want a suspension that will go along with it and thinking about the Pfadt coilovers and adjustable shocks. Would this be a good setup for drag and then switch it back to street duty? Im looking for something versitle, meaning I wanna do the drag strip one night but go corner carving the back roads the next. Whats do you guys think?
On The Tree
Joined: Aug 2007
Posts: 125
Likes: 0
Well Im waiting to hear back from MTI. They shot me over a quote but im gonna have the 408 done instead of the 347 and had them also add halfshafts and DTE brace. I have another question for you guys. I want a suspension that will go along with it and thinking about the Pfadt coilovers and adjustable shocks. Would this be a good setup for drag and then switch it back to street duty? Im looking for something versitle, meaning I wanna do the drag strip one night but go corner carving the back roads the next. Whats do you guys think?