928 owner pet peeve
04-29-2009, 10:05 AM
#16
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I am with you on this.
To me the biggest problem with a swap like this is most of the ones that are done, are done by folks that dont have a clue.
Done correctly, there are a lot of benefits to putting the LS engines in the 928.
To me the biggest problem with a swap like this is most of the ones that are done, are done by folks that dont have a clue.
Done correctly, there are a lot of benefits to putting the LS engines in the 928.
If most 928's out there were in good shape I would agree with you. For every half assed engine swap, there are at least 20 sharks with original engines that should be dropped off a cliff.
If someone like Malibu is going to spend the time and money to do a good conversion, more power to him. Those of you who think an "average" LS motor will not improve the overall performance of an otherwise stock 928, you are in dream land. A bone stock LS2 with out any tuning should put down 350+rwhp. Very few people who go through with the swap leave the engine stock.
Last Wednesday I was helping a friend with a C5 ZO6 on they dyno. The engine is bone stock (this includes the intake snout and exhaust manifolds), straight pipes after the manifolds. With a conservative tune on a 50/50 mix of race gas it put down 385rwhp SAE on the same dyno Shane's 86.5 and Jim Roberts GT was tuned on.
How much does it cost to build a 928 stroker to reach these power levels? Boost? Forget it, 800+hp isn't out of the question for an LS motor.
I find it very funny how many 928 owners who rip on the Chevy conversions do not have stock engines in their car.
How many of you purchased a 928 just because of the engine? I doubt many hands are going up. Yes I love the 928 motor and all of it's quirks, I also have no problem with any good conversion.
I would rather see a nice 928 "saved" with a Chevy engine than parted out.
If someone like Malibu is going to spend the time and money to do a good conversion, more power to him. Those of you who think an "average" LS motor will not improve the overall performance of an otherwise stock 928, you are in dream land. A bone stock LS2 with out any tuning should put down 350+rwhp. Very few people who go through with the swap leave the engine stock.
Last Wednesday I was helping a friend with a C5 ZO6 on they dyno. The engine is bone stock (this includes the intake snout and exhaust manifolds), straight pipes after the manifolds. With a conservative tune on a 50/50 mix of race gas it put down 385rwhp SAE on the same dyno Shane's 86.5 and Jim Roberts GT was tuned on.
How much does it cost to build a 928 stroker to reach these power levels? Boost? Forget it, 800+hp isn't out of the question for an LS motor.
I find it very funny how many 928 owners who rip on the Chevy conversions do not have stock engines in their car.
How many of you purchased a 928 just because of the engine? I doubt many hands are going up. Yes I love the 928 motor and all of it's quirks, I also have no problem with any good conversion.
I would rather see a nice 928 "saved" with a Chevy engine than parted out.
04-29-2009, 10:06 AM
#17
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That's awesome! Especially the 4 carbs. How does it sound?
Kev ,
It's the LS7 with a lightweight 928 (plastic windows, metal cut from everywhere, the light wheels, and a fuel cell with carbon fiber seats that is the killer setup....) But you're right about spending 930 money on a project with unknown time to build, and possible unhappy result. I'd like to see it done though, even a twin turbo ls7... could you imagine that!? Or a hefty cam and heads in a 502 with a blower....My dad has a boat with this setup and it's 600hp with efi....But she's a heavy motor compared to ls7... and the light valve train in the 7 is what's appealing, have you driven the z06? It revs like a Ferrari.
Kev ,
It's the LS7 with a lightweight 928 (plastic windows, metal cut from everywhere, the light wheels, and a fuel cell with carbon fiber seats that is the killer setup....) But you're right about spending 930 money on a project with unknown time to build, and possible unhappy result. I'd like to see it done though, even a twin turbo ls7... could you imagine that!? Or a hefty cam and heads in a 502 with a blower....My dad has a boat with this setup and it's 600hp with efi....But she's a heavy motor compared to ls7... and the light valve train in the 7 is what's appealing, have you driven the z06? It revs like a Ferrari.
04-29-2009, 10:15 AM
#18
Three Wheelin'
The beauty of an engine swap into the 928 is the 928 platform. Its got to be the best buy of the universe. Where else can you get so much for so little? You can dislike it for purity sake but from a cost standpoint I can't think of a better place to start.
04-29-2009, 10:25 AM
#19
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"And finally, everybody likes the looks of the 928, but some can't get a Corvette out of their minds so they start to hack up their 928's. Just buy a Vette, and leave these cars to Porsche fans."
Agreed!
Agreed!
04-29-2009, 03:25 PM
#22
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I had a Sentra with 400hp. The 2.0 sr20 Det with 400hp in a 928 would be fun... but have no real torque to speak of, so the top speed program would be awesome, but the appetizer would be weak.
I'm very happy with my 86.5, and would boost it long before spending any cash on a conversion- however- I REALLY would love to ride in an ls7 powered 928 to see how cool it would be.
I'm very happy with my 86.5, and would boost it long before spending any cash on a conversion- however- I REALLY would love to ride in an ls7 powered 928 to see how cool it would be.
04-29-2009, 03:53 PM
#23
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If most 928's out there were in good shape I would agree with you. For every half assed engine swap, there are at least 20 sharks with original engines that should be dropped off a cliff.
If someone like Malibu is going to spend the time and money to do a good conversion, more power to him. Those of you who think an "average" LS motor will not improve the overall performance of an otherwise stock 928, you are in dream land. A bone stock LS2 with out any tuning should put down 350+rwhp. Very few people who go through with the swap leave the engine stock.
Last Wednesday I was helping a friend with a C5 ZO6 on they dyno. The engine is bone stock (this includes the intake snout and exhaust manifolds), straight pipes after the manifolds. With a conservative tune on a 50/50 mix of race gas it put down 385rwhp SAE on the same dyno Shane's 86.5 and Jim Roberts GT was tuned on.
How much does it cost to build a 928 stroker to reach these power levels? Boost? Forget it, 800+hp isn't out of the question for an LS motor.
I find it very funny how many 928 owners who rip on the Chevy conversions do not have stock engines in their car.
How many of you purchased a 928 just because of the engine? I doubt many hands are going up. Yes I love the 928 motor and all of it's quirks, I also have no problem with any good conversion.
I would rather see a nice 928 "saved" with a Chevy engine than parted out.
Dropping a different motor into a 928 has nothing to do with some desire to really own a Corvette. How silly.
If someone like Malibu is going to spend the time and money to do a good conversion, more power to him. Those of you who think an "average" LS motor will not improve the overall performance of an otherwise stock 928, you are in dream land. A bone stock LS2 with out any tuning should put down 350+rwhp. Very few people who go through with the swap leave the engine stock.
Last Wednesday I was helping a friend with a C5 ZO6 on they dyno. The engine is bone stock (this includes the intake snout and exhaust manifolds), straight pipes after the manifolds. With a conservative tune on a 50/50 mix of race gas it put down 385rwhp SAE on the same dyno Shane's 86.5 and Jim Roberts GT was tuned on.
How much does it cost to build a 928 stroker to reach these power levels? Boost? Forget it, 800+hp isn't out of the question for an LS motor.
I find it very funny how many 928 owners who rip on the Chevy conversions do not have stock engines in their car.
How many of you purchased a 928 just because of the engine? I doubt many hands are going up. Yes I love the 928 motor and all of it's quirks, I also have no problem with any good conversion.
I would rather see a nice 928 "saved" with a Chevy engine than parted out.
Dropping a different motor into a 928 has nothing to do with some desire to really own a Corvette. How silly.
Oh did I mention the difference in gearing between these two platforms? That makes it about even don't you think?
Kevin
04-29-2009, 04:00 PM
#24
1. pretty much any motor thats swapped will be lighter than the stock powerplant (120lbs)
2. pretty much any motor thats swapped will be easier to work on than the stock powerplant (I can extract headers straight out of the hood)
3. pretty much any motor thats swapped will be cheaper to work on than the stock powerplant (spec stage 2+ clutch was $420 for a Chevy small block and $1000 for a 928)
so in the long run I will save money, weight, and time.
Not to say the stock motor isnt amazing, but it does make sense if you can find one already converted and especially if its a track car.
also, if I went up against a 928 with an original motor with the same hp/tq (assuming drivers/tires/etc are equal) 9/10 times the swapped car would win because it is lighter
.02
2. pretty much any motor thats swapped will be easier to work on than the stock powerplant (I can extract headers straight out of the hood)
3. pretty much any motor thats swapped will be cheaper to work on than the stock powerplant (spec stage 2+ clutch was $420 for a Chevy small block and $1000 for a 928)
so in the long run I will save money, weight, and time.
Not to say the stock motor isnt amazing, but it does make sense if you can find one already converted and especially if its a track car.
also, if I went up against a 928 with an original motor with the same hp/tq (assuming drivers/tires/etc are equal) 9/10 times the swapped car would win because it is lighter
.02
04-29-2009, 04:10 PM
#26
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Last Wednesday I was helping a friend with a C5 ZO6 on they dyno. The engine is bone stock (this includes the intake snout and exhaust manifolds), straight pipes after the manifolds. With a conservative tune on a 50/50 mix of race gas it put down 385rwhp SAE on the same dyno Shane's 86.5 and Jim Roberts GT was tuned on.
04-29-2009, 06:01 PM
#29
Three Wheelin'
Calm down Erik, deep breaths brother. I have conistently witnessed bone stock c-5 z06's at many tracks averaging mid 12's to low 13's. Heck, on pass-time the other week there were two on the show that proves what I'm saying. Show me one that does better, and I'll show you that it is modified and on drags. You can get an s4 into those #'s with low boost. All I'm saying is lets be realistic. While I'm thinking about it my 87 5-speed, pre boost ran a 13.34, just a shade better than the factory's claim of 13.5. Now think about that for a second. A stock 32V 5-speed attaining 1/4's within a few tenths of a stock c-5 Zo6! The Porsche engine is far superior both in its tolerances and capability.
Oh did I mention the difference in gearing between these two platforms? That makes it about even don't you think?
Kevin
Oh did I mention the difference in gearing between these two platforms? That makes it about even don't you think?
Kevin
C5Zs are mid-to low 12 second cars. If you run a 13 with one, your either just bought it, or you can't drive it. There have been a few in the 11's too, with STOCK tires. Not many, but the CAR is capable. Tires is a different story, but more 11 second timeslips with tires, like you said.
Drivers make all the difference. The car is capable, period. A 928 with NO boost will not break into the 12's most likely, and most certainly won't get NEAR the 11 second zone. With a tire and boost, maybe, but I have yet to see an 11 second pass on this forum. Maybe i've missed it, I don't lurk here as much as I used to.
Oh, and when a 928 motor is making in excess of 1000hp to the GROUND, maybe, just maybe, it'll be in the same league as an LSx platform.
04-29-2009, 06:02 PM
#30
Three Wheelin'
Must be all the tubing. Z's are lighter than my FRC and my car is just a shade over 3200.