500 hp LT1
Le Mans Master
Joined: Sep 2013
Posts: 7,138
Likes: 3,177
From: Kannapolis MA.
Example of a Dry Sump Kit
https://www.summitracing.com/parts/e...model/corvette
Melting Slicks
Joined: Aug 2014
Posts: 2,746
Likes: 916
Race Director
Joined: Oct 2008
Posts: 16,688
Likes: 7,746
From: NJ
OP. See if you can grab a lightweight stroker rotating assembly.
I did one on a 6.0 for my G8 back in the day and it was an animal. Of course the heads were ported but cam was small nothing crazy.
if you did just the stroker itself you would pick up 40 50lbft torque across the board to the tire. Completely different car.. more like the c6z. And it rev'd like a sport bike.
example. Car was a 12.70 109 110 car with just cam and the 6.0 plus LT's.
enter the stroker and ported stock heads same car stock 2.92. Rear gear stock TC ran 11.60s back to back at 122mph +.
my guess would be low 11@125 126mph on a GS A8. M7 similar mph. Just the stroker and LTs . Good air 10s high 120s.
I did one on a 6.0 for my G8 back in the day and it was an animal. Of course the heads were ported but cam was small nothing crazy.
if you did just the stroker itself you would pick up 40 50lbft torque across the board to the tire. Completely different car.. more like the c6z. And it rev'd like a sport bike.
example. Car was a 12.70 109 110 car with just cam and the 6.0 plus LT's.
enter the stroker and ported stock heads same car stock 2.92. Rear gear stock TC ran 11.60s back to back at 122mph +.
my guess would be low 11@125 126mph on a GS A8. M7 similar mph. Just the stroker and LTs . Good air 10s high 120s.
Last edited by 24/Eray; Nov 16, 2017 at 01:55 PM.
Thread Starter
Burning Brakes
Joined: Dec 2016
Posts: 763
Likes: 89
Yea that's true.. I assume minor bolts ons like headers and x pipe and intakes.. Throttle body? Don't void warranties unless you do a tune... Although the parts may not do much without a tune
Safety Car
Joined: Mar 2014
Posts: 4,483
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From: Kilmarnock Va
Race Director
Joined: Mar 2001
Posts: 19,976
Likes: 6,778
From: Bonneville Salt Flats
How about 18 hp for nothing... other than refiguring horsepower from the "production car engine" adjustment factor used by GM to that of the exclusively aftermarket engine horsepower factor used by GM... and viola... 478 hp right there! Don't ask why but well documented. 
Last edited by Avanti; Nov 16, 2017 at 11:40 PM.
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,942
In the case of engine failure, GM and every other manufacturer will find evidence the ECM has been reflashed and block your powertrain warranty.
Last edited by Foosh; Nov 17, 2017 at 12:06 AM.
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Thread Starter
Burning Brakes
Joined: Dec 2016
Posts: 763
Likes: 89
With today's technology, there is no tune that can't be found, and flashing back to stock does not conceal the fact that the ECM has been non-OEM reflashed. The only people who claim otherwise are tuners who are either ignorant, lying, or both, as well as naive customers drinking their marketing Kool-Aid.
In the case of engine failure, GM and every other manufacturer will find evidence the ECM has been reflashed and block your powertrain warranty.
In the case of engine failure, GM and every other manufacturer will find evidence the ECM has been reflashed and block your powertrain warranty.
Melting Slicks
Joined: Dec 2015
Posts: 2,209
Likes: 933
From: Just outside a swamp in Florida
Or you could drop a few extra $$, let Callaway have it for a few weeks, keep your warranty, have the power you want without the overheating issues, and have a car you can sell, if you need to, because most car guys won’t be afraid it’s been modded by an amateur mechanic. Jmo
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,050
Likes: 12,416
From: NE South Carolina
There are a number of tuners that sell quality and proven aftermarket parts.
LG Motorsports is one and a forum vendor. Have bought parts from them but not to increase power. They race Vettes and have excellent experience. Great customer service.
Have not seen the Katech name mentioned. Again have bought parts from them but not to increase power. They show a simple intake and tune that will give ~500 hp for ~$1800, an $8000 package that will yield 600 hp and for $24,000 a bored out 427 LT1 for a 700 hp NA engine!
LG Motorsports is one and a forum vendor. Have bought parts from them but not to increase power. They race Vettes and have excellent experience. Great customer service.
Have not seen the Katech name mentioned. Again have bought parts from them but not to increase power. They show a simple intake and tune that will give ~500 hp for ~$1800, an $8000 package that will yield 600 hp and for $24,000 a bored out 427 LT1 for a 700 hp NA engine!
Last edited by JerryU; Nov 17, 2017 at 07:59 AM.
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
A nice CNC head/cam package with either a ported stock intake/TB or a MSD intake/102TB, along with headers should gain you about 100 rwhp...You could also go to E85 if its available in your area and gain another 30 hp or so... There are guys making 550 rwhp with stock bottom end LT1s.
Just don't get caught up in these big name shops and their big name packages that cost you $10k+....
Do your research...
Look up Pray Performance on FB....
Just don't get caught up in these big name shops and their big name packages that cost you $10k+....
Do your research...
Look up Pray Performance on FB....
Thread Starter
Burning Brakes
Joined: Dec 2016
Posts: 763
Likes: 89
There are a number of tuners that sell quality and proven aftermarket parts.
LG Motorsports is one and a forum vendor. Have bought parts from them but not to increase power. They race Vettes and have excellent experience. Great customer service.
Have not seen the Katech name mentioned. Again have bought parts from them but not to increase power. They show a simple intake and tune that will give ~500 hp for ~$1800, an $8000 package that will yield 600 hp and for $24,000 a bored out 427 LT1 for a 700 hp NA engine!
LG Motorsports is one and a forum vendor. Have bought parts from them but not to increase power. They race Vettes and have excellent experience. Great customer service.
Have not seen the Katech name mentioned. Again have bought parts from them but not to increase power. They show a simple intake and tune that will give ~500 hp for ~$1800, an $8000 package that will yield 600 hp and for $24,000 a bored out 427 LT1 for a 700 hp NA engine!
I just think the Grand sport with 500-525 hp would be the perfect vette
Last edited by ShahulX; Nov 17, 2017 at 09:17 AM.
Pro
Joined: Jul 2017
Posts: 636
Likes: 134
Agreed.
Instructor
Joined: Nov 2005
Posts: 230
Likes: 79
From: Plano TX
X IV on that
I tried to get an estimate at Hennessey on a supercharger for my 2016 base Stingray coupe A8 and they were $12 large and wanted to keep it for a month, so nope...
Thread Starter
Burning Brakes
Joined: Dec 2016
Posts: 763
Likes: 89
Don't know about you, but 27 months goes by like 27 days for me nowadays. I'm going to run out at least 18-20 months of my warranty and see if there are any weak links due to my driving it like I want to...meaning a few trips to the drag strip and maybe the track, then a few back road burn-outs and see if anything fails. At that point I think I be more comfortable voiding warranty, though If I put headers on it and needed warranty work, I'd roll the dice and take it in to the dealer and see what happens.
Agreed.
Agreed.
aslo had the power steering cooler installed under warranty for overheating...
Maybe I should give it another year... not sure I'll wait the full 3 lol...
Burning Brakes
Joined: Oct 2016
Posts: 1,034
Likes: 154
Don't know about you, but 27 months goes by like 27 days for me nowadays. I'm going to run out at least 18-20 months of my warranty and see if there are any weak links due to my driving it like I want to...meaning a few trips to the drag strip and maybe the track, then a few back road burn-outs and see if anything fails. At that point I think I be more comfortable voiding warranty, though If I put headers on it and needed warranty work, I'd roll the dice and take it in to the dealer and see what happens.
Agreed.
Agreed.
Melting Slicks
Joined: Nov 2005
Posts: 2,074
Likes: 309
I think I remember seeing a GM Performance Parts crate motor that is rated almost exactly what you’re looking for. Pull your stock engine and sell it for the best price, install the crate engine and you still have a warranty.
Pro
Joined: Jul 2017
Posts: 636
Likes: 134
I saw that ad too. I wondered why the Vette and Camaro don't come with whatever has changed on the crate engine.
