How Many Twin Turbo LT5 Cars????? - Page 2 - ZR-1 Net Registry Forums

RICKYRJ1 · 03-17-2013

not enough built! if it was up to me

LancePearson · 03-17-2013

If you wanted more power on the LT5 after porting and relieving but kept it the same 5.7 liters would a twin turbo or a modern supercharger give you more power? I never see info on these where superchargers are on them. Don't fit with our plenums? Putting two turbos under the hood is a real trick it seems to me. I know one twin turbo owner who shared the approximate cost with me and it was considerably more than what LPE charges to go to 415 cid, etc...considerably.

cvette98pacecar · 03-17-2013

Here is what I know of for Twin Turbo ZR-1
2- SGC (which does not include Wayne car being done twice)
1- FBI
1- Ron H
3- Callaway's
1- Mallet
1- Nelson
4-LPE
1-Henderson (currently under construction)

That would make a total of 13 Twin Turbo cars. FBI car does not count as it is a single turbo not Twin Turbo.

HAWAIIZR-1 · 03-18-2013

Quote:

Originally Posted by LancePearson

If you wanted more power on the LT5 after porting and relieving but kept it the same 5.7 liters would a twin turbo or a modern supercharger give you more power? I never see info on these where superchargers are on them. Don't fit with our plenums? Putting two turbos under the hood is a real trick it seems to me. I know one twin turbo owner who shared the approximate cost with me and it was considerably more than what LPE charges to go to 415 cid, etc...considerably.

Lance,
Here is a supercharged LT5/ZR-1 from Randy Woods:
http://www.zr1products.com/
It also says there is a "Twin Supercharged" soon............

LancePearson · 03-18-2013

Hawaii
Mounted next to it just like the turbos do...it does not say what hp and torque or boost numbers used so it's hard to compare it. The twin turbo I referred to owner told me that he can't really turn the boost up on it until he is into third gear or the rear just spins and spins losing traction with all the power it generates. he also owns a 415 which is VERY fast in its own right. Personally cannot imagine handling that much power. I don't think my reflexes are fast enough! Thanks for sharing the supercharged site. Wonder what drives the SC, a bigger serpentine belt?

HAWAIIZR-1 · 03-18-2013

Quote:

Originally Posted by LancePearson

Hawaii
Mounted next to it just like the turbos do...it does not say what hp and torque or boost numbers used so it's hard to compare it. The twin turbo I referred to owner told me that he can't really turn the boost up on it until he is into third gear or the rear just spins and spins losing traction with all the power it generates. he also owns a 415 which is VERY fast in its own right. Personally cannot imagine handling that much power. I don't think my reflexes are fast enough! Thanks for sharing the supercharged site. Wonder what drives the SC, a bigger serpentine belt?

Hello Lance,
Here is an article that provides some info, but maybe not specific HP, etc. Randy and his Dad Ron are awesome folks and very smart fellas and I hope you have the opportunity to meet them one day: http://www.vetteweb.com/features/vem...1/viewall.html
I guess I don't want to talk about SC since this is a TT post. Take care, Craig

rkreigh · 03-18-2013

Norm's TT ZR-1 is also a 368. LPE did 3 368 TT and will's 385 for a total of 4 limited by the contract.

Norm's car pulled some fantastic 9.43s at BG with the legendary John L. giving it all it had and driving through the tires spinning a good portion of the quarter. even though the track was prepped, getting the power down on drag radials is beyond a challenge and John was truely fearless the way he piloted the Norm's cars. Not positive how much HP norm's car makes abut I believe it's around 1,000 at the tires.

like to hear more about who bought Paul D.'s TT car, what a steal!!! that is the 2nd of the LPE TTs to be converted to an automatic trans, and while most don't favor that approach it works fantastic with the turbos and allows the drivetrain to survive at higher HP levels without the shock from clutch launches and shifting. when you are on the boil with the turbo boost why would you ever want to lift your foot off the go pedal??? automatics and turbos are a good fit together.

didn't realize a second SGC TT car had been built, like to hear more about it too. Wayne's car is spectacular, and I heard it's good to hear another one is available. like to know how much in case I hit the lottery.

I talked a few years back to both Chuck Mallett and Reeves Callaway about doing more TT ZR-1s and they are certainly willing, but the price tags were WAY beyond my means. Chuck wanted to build some inconel manifolds (at around 20k to get started on the hot side plumbing) and both companies prices were well north of 50k for the build prices.

now that Ron H. & Raptor we have a reasonably priced rear mount turbo alternative which clearly works very well. I wasn't too big on rear mount turbos initially but after riding in the car and seeing the success of many C5 STS setups, it's a clearly solid approach.

I also believe that with some reasonable fabrication skills more front mount turbo ZR-1s could be built (albeit not easily, space is tight, but clearly we have many "examples" of how it's done). while the LT5 isn't a "great" candidate for boost, it's certainly a very strong block with some of the limitations being head gasket sealing with only 4 bolts per cyl much like the LSx engines. (which now offer 6 bolt aftermarket blocks and heads).

however with head studs, good tuning, and enough $$ thrown at it 1k hp is clearly within reach with a low compression engine (doesn't have to be a 368 either!! boost makes up for displacement very well. even more exciting in my way of thinking is boosting a STOCK LT5 running either e85 or heavy meth injection for intercooling under boost.

if overall cyl pressure is kept reasonable, the Mahle factory pistons are very strong and the LT5 is VERY detonation resistant. fabricating the plumbing while difficult is certainly NOT beyond the talents of many shops, and using the factory manfolds as a starting point should save a bundle.

if a TT car can be built for around the price of a 415, you will have a very enjoyable car indeed. with the modern boost controllers boost by speed or boost by gear is very easily setup and with the megasquirt raptor solution right around the corner, tuning will be much easier than burning memcals

after experiencing the 800 rwhp TT Z06, I can tell you that 800 at the tire is "enough" for any street driven car and I dial the car at 600 for best performance to hook up on toyo RA1 radials. 800 requires a minimum of a drag radial and ideally a slick to hook up. at that point the drivetrain becomes very suspect and broken parts will quickly great you after "spirited lauches" with traction present.

otherwise, the extra HP makes some very expensive rubber dust, but in either event it's the most fun you can have with your clothes on IMHO.

I hope to someday add a 1 to the number of TT ZR-1s, but it won't be until I wear out the LSV, and at 80k miles I estimated I'll probably put another HARD 80k miles on it before it needs freshening.

lets see if we can get some of these fabricators to "step up" and help out with this "stock manifold" approach or give Raptor some additional business to "sell out" their rear mount kits. either approach will produce some reasonably priced fun.

a boosted ZR-1 is a thing of job to be sure. hang out for a bit on the LS1tech website and see what folks are doing with lowly 5.3 and 4.8 ls truck motors with modified factor truck manifolds. cheap 800-1000 hp on FACTORY bottom ends which is unreal to be sure. when they blow one, they just slap in a new used short block for a few hundred bucks and keep going. we need to be a bit more careful as LT5s aren't cheap (yet) but certainly they are even MORE durable than the LS engines.

Kevin · 03-18-2013

didn't Ken (i think that was his name) Lingenfelter buy pauls car at auction?

ZZZZZR1 · 03-18-2013

Quote:

Originally Posted by Kevin

didn't Ken (i think that was his name) Lingenfelter buy pauls car at auction?

No a gentleman from Oklahoma bought it. It's likely going to be @ BG for display this year. (we are hoping to see Norm's car too)

David

ZZZZZR1 · 03-18-2013

Quote:

Originally Posted by HAWAIIZR-1

Hello Lance,
Here is an article that provides some info, but maybe not specific HP, etc. Randy and his Dad Ron are awesome folks and very smart fellas and I hope you have the opportunity to meet them one day: http://www.vetteweb.com/features/vem...1/viewall.html
I guess I don't want to talk about SC since this is a TT post. Take care, Craig

Randy's car is a work of art!!!!

I can't believe all of the work that went into that car.

David

03-17-2013	#11
RICKYRJ1 Join Date: Dec 2005 Location: Tinton Falls, NJ Posts: 1,169	Re: How Many Twin Turbo LT5 Cars????? not enough built! if it was up to me

03-17-2013	#12
LancePearson Join Date: Dec 2012 Location: Chester, Virginia Posts: 457	Re: How Many Twin Turbo LT5 Cars????? If you wanted more power on the LT5 after porting and relieving but kept it the same 5.7 liters would a twin turbo or a modern supercharger give you more power? I never see info on these where superchargers are on them. Don't fit with our plenums? Putting two turbos under the hood is a real trick it seems to me. I know one twin turbo owner who shared the approximate cost with me and it was considerably more than what LPE charges to go to 415 cid, etc...considerably.

03-17-2013	#13
cvette98pacecar Join Date: May 2011 Location: Sydney, Australia Posts: 2,466	Re: How Many Twin Turbo LT5 Cars????? Here is what I know of for Twin Turbo ZR-1 2- SGC (which does not include Wayne car being done twice) 1- FBI 1- Ron H 3- Callaway's 1- Mallet 1- Nelson 4-LPE 1-Henderson (currently under construction) That would make a total of 13 Twin Turbo cars. FBI car does not count as it is a single turbo not Twin Turbo.

03-18-2013	#15
LancePearson Join Date: Dec 2012 Location: Chester, Virginia Posts: 457	Re: How Many Twin Turbo LT5 Cars????? Hawaii Mounted next to it just like the turbos do...it does not say what hp and torque or boost numbers used so it's hard to compare it. The twin turbo I referred to owner told me that he can't really turn the boost up on it until he is into third gear or the rear just spins and spins losing traction with all the power it generates. he also owns a 415 which is VERY fast in its own right. Personally cannot imagine handling that much power. I don't think my reflexes are fast enough! Thanks for sharing the supercharged site. Wonder what drives the SC, a bigger serpentine belt?

03-18-2013	#17
rkreigh Join Date: Jan 2004 Location: Alex VA Posts: 1,080	Re: How Many Twin Turbo LT5 Cars????? Norm's TT ZR-1 is also a 368. LPE did 3 368 TT and will's 385 for a total of 4 limited by the contract. Norm's car pulled some fantastic 9.43s at BG with the legendary John L. giving it all it had and driving through the tires spinning a good portion of the quarter. even though the track was prepped, getting the power down on drag radials is beyond a challenge and John was truely fearless the way he piloted the Norm's cars. Not positive how much HP norm's car makes abut I believe it's around 1,000 at the tires. like to hear more about who bought Paul D.'s TT car, what a steal!!! that is the 2nd of the LPE TTs to be converted to an automatic trans, and while most don't favor that approach it works fantastic with the turbos and allows the drivetrain to survive at higher HP levels without the shock from clutch launches and shifting. when you are on the boil with the turbo boost why would you ever want to lift your foot off the go pedal??? automatics and turbos are a good fit together. didn't realize a second SGC TT car had been built, like to hear more about it too. Wayne's car is spectacular, and I heard it's good to hear another one is available. like to know how much in case I hit the lottery. I talked a few years back to both Chuck Mallett and Reeves Callaway about doing more TT ZR-1s and they are certainly willing, but the price tags were WAY beyond my means. Chuck wanted to build some inconel manifolds (at around 20k to get started on the hot side plumbing) and both companies prices were well north of 50k for the build prices. now that Ron H. & Raptor we have a reasonably priced rear mount turbo alternative which clearly works very well. I wasn't too big on rear mount turbos initially but after riding in the car and seeing the success of many C5 STS setups, it's a clearly solid approach. I also believe that with some reasonable fabrication skills more front mount turbo ZR-1s could be built (albeit not easily, space is tight, but clearly we have many "examples" of how it's done). while the LT5 isn't a "great" candidate for boost, it's certainly a very strong block with some of the limitations being head gasket sealing with only 4 bolts per cyl much like the LSx engines. (which now offer 6 bolt aftermarket blocks and heads). however with head studs, good tuning, and enough $$ thrown at it 1k hp is clearly within reach with a low compression engine (doesn't have to be a 368 either!! boost makes up for displacement very well. even more exciting in my way of thinking is boosting a STOCK LT5 running either e85 or heavy meth injection for intercooling under boost. if overall cyl pressure is kept reasonable, the Mahle factory pistons are very strong and the LT5 is VERY detonation resistant. fabricating the plumbing while difficult is certainly NOT beyond the talents of many shops, and using the factory manfolds as a starting point should save a bundle. if a TT car can be built for around the price of a 415, you will have a very enjoyable car indeed. with the modern boost controllers boost by speed or boost by gear is very easily setup and with the megasquirt raptor solution right around the corner, tuning will be much easier than burning memcals after experiencing the 800 rwhp TT Z06, I can tell you that 800 at the tire is "enough" for any street driven car and I dial the car at 600 for best performance to hook up on toyo RA1 radials. 800 requires a minimum of a drag radial and ideally a slick to hook up. at that point the drivetrain becomes very suspect and broken parts will quickly great you after "spirited lauches" with traction present. otherwise, the extra HP makes some very expensive rubber dust, but in either event it's the most fun you can have with your clothes on IMHO. I hope to someday add a 1 to the number of TT ZR-1s, but it won't be until I wear out the LSV, and at 80k miles I estimated I'll probably put another HARD 80k miles on it before it needs freshening. lets see if we can get some of these fabricators to "step up" and help out with this "stock manifold" approach or give Raptor some additional business to "sell out" their rear mount kits. either approach will produce some reasonably priced fun. a boosted ZR-1 is a thing of job to be sure. hang out for a bit on the LS1tech website and see what folks are doing with lowly 5.3 and 4.8 ls truck motors with modified factor truck manifolds. cheap 800-1000 hp on FACTORY bottom ends which is unreal to be sure. when they blow one, they just slap in a new used short block for a few hundred bucks and keep going. we need to be a bit more careful as LT5s aren't cheap (yet) but certainly they are even MORE durable than the LS engines.

03-18-2013	#18
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,624	Re: How Many Twin Turbo LT5 Cars????? didn't Ken (i think that was his name) Lingenfelter buy pauls car at auction? __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"