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I am currently saving up for a base model c5 for daily driving would still like to have increase the hp. I wanna at least increase it to 400 but am curious if 550 is reachable while still keeping it reliable. If that is possible which form of boost would stay along the lines of reliability omeglexender ?
400 at the motor is easily reachable with the LS1. 243 heads, LS6 cam (or better) CAI, LS6 intake and your there. Add LT’s and a tune and you’re around 390-400 rwhp, 440-450 at the motor. For 550 (at motor) easiest route is a roots style supercharger with LT’s and a tune.
Supercharged LS1’s with not a ton of boost hold up pretty well. If it’s centrifugal then the SC doesn’t even kick in until you’re above 3k rpm or more. Below that rpm it will drive like stock.
It all depends on what parts you buy and who you get to tune it. If you get good quality parts and get a conservative tune that does not try to delete your head gasket every time you look at the car. Or in other words your daily driver reliably vs hp chart should include cost per hp as the more power you make the more expensive the parts get.
I used to be over 500 whp all motor and had perfect street manners and driveability. I fully expext the same with the new twin turbo build and a low boost setring for only 600-700 whp on the street.
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I'm at 600 RWHP with the A&A and Cam package installed. I drive it a few time a week to work no issues even in this 100+ deg Texas heat at the moment. I'd drive it more but I prefer not getting hit by clowns in Houston traffic. for some reason I don't believe the fuel millage being 22.5 like it's telling me. I think it's closer to 13 or 14.
Welcome to the forum! I personally think 550 is the sweet spot for a daily driven C5. A supercharger and a set of LT headers will get you there. If done right, it is extremely reliable. Good luck with you search.
Depends on the car, how it is tuned and how it is complimented with the right parts around it. It also depends on the maturity of the driver.
There are a number of well built mega cars with tons of HP that work well as they have all the things to make it work.
The real question should be just how much power can you use on the street with out crashing or going to jail.
Like today we have Chargers with 500 HP and over 700 HP. On the street both can do the same things but the 700 plus one seldom can use all the power it has on the street and nor would you want to.
We had a AWD coupe that ran 650 HP NA engine and was built by John Lingenfelter. It was a very good street car once it had an automatic. It liked eating duel disc clutches. We drover it all around Hot August Nights with no issues. It made good power but was complimented with the right stuff to make it easy to drive.
Just getting the combination right is key and many miss this and have issues. Too much cam or compression. Too much gear or not enough cooling. etc. A good balance of all things are key.
There are no limits but there is common sense to what you really need or can use.
I generally don't like responding to 1 post OP threads lol, but here we go.
The reality of it is, it's not a horsepower level or magic number.
It has far more to do with the builder, tuner and then the parts selected. IMO it leans way more to builder quality.
If a hack builds a car with the best parts you are going to wind up with an unreliable POS. Simple as that.
On the flip side of that there are guys out there that can successfully build a 1000hp junkyard parts car with a Chinese turbo and make it reliable enough to drive daily or cross country for years and years.
I've seen countless dozens of high end built cars I wouldn't drive to work that the owners think are good to go.
Last edited by Mr. Black; Jul 26, 2023 at 11:51 AM.
Reason: Clarity
550whp NA here and it's daily-able if I wanted to. Overbuilt, low-stress, very reliable. Gas mileage not awesome...If I dailied it, I'd probably install a heavier clutch/flywheel just to make taking off from a stop a bit smoother.