Going to get MTI 422. Need your input
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Going to get MTI 422. Need your input Iam going to place an order with MTI for a 422 LS1 within few days. Here are some specs:
-422 LS1 block with 4.0" stroke & 4.1" bore
-Stage 3 LS6 heads
-R1 Cam
-ASP underdrive crank pulley
Now I want your opinion with regard to the following:
-Should I go with LS6 block instead of LS1 ?
-Should I go with a more aggressive cam (i.e. S1) ?
Also I welcome any other inputs. My car is a weekend cruiser/warrior & Iam not planning to use NOS/Boost applications on the motor. I visit the track no more than once month or so & I'll be happy if it would run low 11s @125+ on street tires & fair weather.
Thanks
<img src="graemlins/z06.gif" border="0" alt="[Z06 Corvette]" />
-422 LS1 block with 4.0" stroke & 4.1" bore
-Stage 3 LS6 heads
-R1 Cam
-ASP underdrive crank pulley
Now I want your opinion with regard to the following:
-Should I go with LS6 block instead of LS1 ?
-Should I go with a more aggressive cam (i.e. S1) ?
Also I welcome any other inputs. My car is a weekend cruiser/warrior & Iam not planning to use NOS/Boost applications on the motor. I visit the track no more than once month or so & I'll be happy if it would run low 11s @125+ on street tires & fair weather.
Thanks
<img src="graemlins/z06.gif" border="0" alt="[Z06 Corvette]" />
D(irecto)r Pepper
Joined: Nov 2001
Posts: 1,952
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From: Houston Raceway Park...in TEXAS.
Re: Going to get MTI 422. Need your input I am going to place an order with MTI for a 422 LS1 within few days.
+++ Lucky bastard! <img src="gr_stretch.gif" border="0">
-422 LS1 block with 4.0" stroke & 4.1" bore
-Stage 3 LS6 heads+++Have you seen the flow they get out of these? It's freaking amazing!
-R1 Cam+++Good cam but not for a ALL OUT effort.
-ASP underdrive crank pulley+++NO way to go wrong with that one.
-Should I go with LS6 block instead of LS1 ?...I dont see why. How is it better? I know the LS6 rotating assembly is a bet better. But the block? Educate me...that would be news to me.
-Should I go with a more aggressive cam (i.e. S1) ?+++not unless it is to be primarily a TRACK CAR. That is a BIG cam. Seriously, unless you plan on running it mainly at the track. Do the R1 or something in between the two.
240/240 for example.
P.S., Lucky bastard.
<img src="graemlins/gr_hail.gif" border="0" alt="[hail]" /> MTI 422
+++ Lucky bastard! <img src="gr_stretch.gif" border="0">
-422 LS1 block with 4.0" stroke & 4.1" bore
-Stage 3 LS6 heads+++Have you seen the flow they get out of these? It's freaking amazing!
-R1 Cam+++Good cam but not for a ALL OUT effort.
-ASP underdrive crank pulley+++NO way to go wrong with that one.
-Should I go with LS6 block instead of LS1 ?...I dont see why. How is it better? I know the LS6 rotating assembly is a bet better. But the block? Educate me...that would be news to me.
-Should I go with a more aggressive cam (i.e. S1) ?+++not unless it is to be primarily a TRACK CAR. That is a BIG cam. Seriously, unless you plan on running it mainly at the track. Do the R1 or something in between the two.
240/240 for example.
P.S., Lucky bastard.
<img src="graemlins/gr_hail.gif" border="0" alt="[hail]" /> MTI 422
TECH Senior Member
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Posts: 10,341
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Re: Going to get MTI 422. Need your input Wow! Sounds like a stout combo <img src="gr_grin.gif" border="0">
I would probably keep the R1, though a 240/240 610 lift , 112LSA cam would be nice too haha <img src="gr_stretch.gif" border="0">
I think longtubes with full 3 inch dual would be the best. If you have emissions concerns go with a 114LSA and run dual 3 inch cats.
Your car is going to be sick <img src="gr_grin.gif" border="0">
Chris
I would probably keep the R1, though a 240/240 610 lift , 112LSA cam would be nice too haha <img src="gr_stretch.gif" border="0">
I think longtubes with full 3 inch dual would be the best. If you have emissions concerns go with a 114LSA and run dual 3 inch cats.
Your car is going to be sick <img src="gr_grin.gif" border="0">
Chris
Re: Going to get MTI 422. Need your input You're going to LOVE the setup! With as awesome as MTI's stage 3 LS6 heads are flowing, I'd definitely go with more lift. Maybe try the R1 with a set of Crane 1.8:1 roller rockers. That would net you .593" lift vs. .560" with the stock 1.7's. If it were me, I'd take a middle-of-the-road cam, as John suggested, with 236/236, .6"/.6", 114 LSA.
Good luck with the setup, and I agree with John. You lucky bastard!
Good luck with the setup, and I agree with John. You lucky bastard!
__________________
Re: Going to get MTI 422. Need your input The LS6 block is actually not as good when it comes to resleeving. Plus, one bad move on the machining operation and the expensive core is scrap metal. Its much easier to replace an LS1 block. Once they are sleeved, a block is a block.
Now, if you want to really throw down some $$$$ for a block, go with the C5-R racing block <img src="gr_grin.gif" border="0">
The R1 cam is very drivable in a 422ci setup, if you want something more radical you could always step up to a solid roller cam setup like SW's car. THAT is what I'd consider!
Tony
Now, if you want to really throw down some $$$$ for a block, go with the C5-R racing block <img src="gr_grin.gif" border="0">
The R1 cam is very drivable in a 422ci setup, if you want something more radical you could always step up to a solid roller cam setup like SW's car. THAT is what I'd consider!
Tony
Re: Going to get MTI 422. Need your input [quote]Originally posted by Nine Ball:
<strong>The R1 cam is very drivable in a 422ci setup, if you want something more radical you could always step up to a solid roller cam setup like SW's car. THAT is what I'd consider!
Tony</strong><hr></blockquote>
Yeah, I guess 540 RWHP would be OKAY.
<img src="graemlins/gr_jest.gif" border="0" alt="[jester]" /> <img src="graemlins/gr_hail.gif" border="0" alt="[hail]" />
<strong>The R1 cam is very drivable in a 422ci setup, if you want something more radical you could always step up to a solid roller cam setup like SW's car. THAT is what I'd consider!
Tony</strong><hr></blockquote>
Yeah, I guess 540 RWHP would be OKAY.
<img src="graemlins/gr_jest.gif" border="0" alt="[jester]" /> <img src="graemlins/gr_hail.gif" border="0" alt="[hail]" />
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Launching!
Joined: Nov 2001
Posts: 201
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From: Houston, TX
Re: Going to get MTI 422. Need your input My recommendation is to stay with an LS1 block. Save your money for the Stage III LS6 heads as their flow is far superior to the LS1s.
The R1 cam is your best bet to have outstanding performance with good drivabilty. The "S1" camshaft would be great if you were only driving the car on weekends, running race gas, and opting for higher compresion. The R1 is still the best compromise for a street car.
Running the times you are looking for will be no problem with this set-up!
Jayson - MTI <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />
The R1 cam is your best bet to have outstanding performance with good drivabilty. The "S1" camshaft would be great if you were only driving the car on weekends, running race gas, and opting for higher compresion. The R1 is still the best compromise for a street car.
Running the times you are looking for will be no problem with this set-up!
Jayson - MTI <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />
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TECH Apprentice
Joined: Jan 2002
Posts: 356
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From: Texas
Re: Going to get MTI 422. Need your input So, as more and more 2002 models are out there and the possibility of the LS6 block now being available, what are the differences that would make it more difficult to machine?
The LS6 block has different machining in the engine valley, the oil drain back is a little better and the main caps include "breathing windows", but those could be machined into a LS1 cap(as far as I know).
Todd
The LS6 block has different machining in the engine valley, the oil drain back is a little better and the main caps include "breathing windows", but those could be machined into a LS1 cap(as far as I know).
Todd
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TECH Senior Member
Joined: Nov 2001
Posts: 9,246
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From: Troy, AL
Re: Going to get MTI 422. Need your input How about a moderate solid lift setup? You could get awesome power while still maintaining a good idle. <img src="gr_images/icons/cool.gif" border="0">
My S1 cam is NOT for the faint of heart!
My S1 cam is NOT for the faint of heart!
TECH Apprentice
Joined: Dec 2001
Posts: 351
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From: CA
Re: Going to get MTI 422. Need your input [quote]Originally posted by MTI:
<strong>My recommendation is to stay with an LS1 block. Save your money for the Stage III LS6 heads as their flow is far superior to the LS1s.
Jayson - MTI <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" /> </strong><hr></blockquote>
Hi Jayson,
Can you give us the flow numbers to compare between S3 LS6 heads and LS1 heads?
My friend has a MTI 422 in his Z06, the first one done by MTI. It is a bad car, he can't floor it until maybe 3rd gear, he'll just slide all over the place.
Thanks!
<strong>My recommendation is to stay with an LS1 block. Save your money for the Stage III LS6 heads as their flow is far superior to the LS1s.
Jayson - MTI <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" /> </strong><hr></blockquote>
Hi Jayson,
Can you give us the flow numbers to compare between S3 LS6 heads and LS1 heads?
My friend has a MTI 422 in his Z06, the first one done by MTI. It is a bad car, he can't floor it until maybe 3rd gear, he'll just slide all over the place.
Thanks!
TECH Fanatic
Joined: Nov 2001
Posts: 1,347
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From: Freeland, MD
Re: Going to get MTI 422. Need your input xxxhp - The 422 is getting installed on my car as we speak. I also had for a few months a number of the same questions on the 422 setup, and here is what I have learned:
1) I would pretty much go with what MTI recommends - they have been testing/tweaking/fiddling with the combos for awhile, and thus know as much about these as anyone (recall that they are the ones who would have to answer to any unhappy owners!!). They have produced a number of very streetable cars now that are around 500 RWHP all motor!
2) The choice of pulley and S3 LS6 heads are no brainers. The more difficult questions are cam, exhaust setup, and what to do to your drivetrain so that you can hookup and not blow anything up.
3) I got to check out a car last week that had a 422, R1 on a 112 LSA, and Corsa catback. The car thumped beautifully at idle, screamed (with a surprisingly exotic sound) at WOT, but was otherwise very well-behaved in driving.
The setup I am getting is in my sig. I will let you know (and post on this board) how it does once I get it back. Remember, you have some time yet on final cam/exhaust questions.
1) I would pretty much go with what MTI recommends - they have been testing/tweaking/fiddling with the combos for awhile, and thus know as much about these as anyone (recall that they are the ones who would have to answer to any unhappy owners!!). They have produced a number of very streetable cars now that are around 500 RWHP all motor!
2) The choice of pulley and S3 LS6 heads are no brainers. The more difficult questions are cam, exhaust setup, and what to do to your drivetrain so that you can hookup and not blow anything up.
3) I got to check out a car last week that had a 422, R1 on a 112 LSA, and Corsa catback. The car thumped beautifully at idle, screamed (with a surprisingly exotic sound) at WOT, but was otherwise very well-behaved in driving.
The setup I am getting is in my sig. I will let you know (and post on this board) how it does once I get it back. Remember, you have some time yet on final cam/exhaust questions.
Launching!
Joined: Nov 2001
Posts: 201
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From: Houston, TX
Re: Going to get MTI 422. Need your input Our Stage III LS1 heads flow around 310 - 315 cfm at .600" lift. The Stage III LS6 head flows between 330 to 340 cfm at the same lift. Both heads flow similarly up to about .450" lift where the LS6's larger volume intake runners begin to take over. On the exhaust side, both heads flow right at 240 cfm at .650" lift, however, the LS6s area under the curve really outperforms the LS1s. At .400" lift the LS1s flow 180 cfm exhaust flow where the LS6s are flowing 210 cfm!
If your building a great performing street car the LS1 heads will work great. If your looking to extract the most amount of power from your combination or building a serious track car, the LS6s are the only way to go.
Jayson - MTI <img src="graemlins/gr_cheers.gif" border="0" alt="[cheers]" />
If your building a great performing street car the LS1 heads will work great. If your looking to extract the most amount of power from your combination or building a serious track car, the LS6s are the only way to go.
Jayson - MTI <img src="graemlins/gr_cheers.gif" border="0" alt="[cheers]" />
Thread Starter
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Re: Going to get MTI 422. Need your input Thank you all for your responses. I'll stick with the R1 cam.
I really hope that my FLP level IV transmission & Getrag 3.73 gears will stand that massive amount of power <img src="gr_images/icons/cool.gif" border="0">
I really hope that my FLP level IV transmission & Getrag 3.73 gears will stand that massive amount of power <img src="gr_images/icons/cool.gif" border="0">
