Im no mechanic! Soooo, Where do i go from whats in my sig. whats the next step? fuel injectors, TB, fuel pressure reg, ignition system? And what parts will work best with what ive already done?

 

A converter and gears should definitely be on your "to-do" list, if you haven't already done so. Looking at you sig, it's not mentioned. Of course, if you do these mods, you should get the tune redone.

 

Its an M6 and Im about to install 3.73s. I was really wondering about engine mods. And my tune was for 3.73s.

 

Fuel injectors don't increase hp, they allow you to inject fuel for a motor that is already making more power. I don't think you need them so wait until you need them.

TB. Not needed the stock handles at least 350 rwhp and you are not there, in fact a larger TB will hurt driving manners. It is like putting an 850 on a motor that needs a 660 cfm it hurts throttle response and since motor doesn't need the extra cfm actually hurts performance. The stock tb is ~660 cfm and 58 is ~1000 cfm

fuel pressure reg if the stock ones goes out put in a variable since they are cheaper. Agin not needed it will allow the injectors to handle slightly more power but you don t need it yet


I like Delteq even on a stock engine. It removes high voltage from opti so can help them last longer. They are expnsive and won't add hp but will help car idle beter and ignition to fire more reliable through out rpm band.

I would look toward cold air to the engine.

Good luck

 

you are gonna love then gears!!!!

 

Sorry about that. I read right through the "6 speed" in your sig. You've done h/c/i already so Battleship is correct: getting good fire to the engine and some cold air would make it perform even better.

An MSD 6A, coil and wires will definitely supply all the spark you need. The motor will become alot crisper and have better throttle response.

 

you dont think the guy has 350hp with heads,cam,headers

 

I would say gears, then ignition. Ignition does not do a lot in the HP department, but it does make it pull smoother and I noticed better idle quality

 

i had pretty much the same setup and put down 361 to the tires. i would get 30lb injectors, a dynotune, and spray a 150 shot on it.

 

Do I think he is making >=350 RWHP? No. I calculate my hp from track times.

People here seem to believe 350 RWHP is common it is NOT. A cam that is224/230 with .50/.51 lift is small. Now if he had a different cam maybe, but the best hp on stock ported heads I have seen is Lloyd Elliot heads.

Lloyd recommends a lot more than most think it takes. In fact I have a set of his heads. They flow a lot, but I doubt I could not make 350 RWHP with a 503 and LE heads.

To put the hp in perspective a 3700 lb car with 350 RWHP should do a 12.66 @ 107 1/4.

Calculated by http://bbs.hardcore50.com/calc/?mode=perffromhpw

 

get a cold air intake and an electric waterpump

 

Well, i guess its a good thing my car weighs less than 3100 lbs.
Back to my mods. CAI has been fabbed up but is still not really able to get fresh cold air due to the LT1s radiator and bracket i had to stuff in there. Ill work on it but what else? My LT1 came out of a vette so it was 300hp stock. I only gained 50 hp with everything? From the preformance It felt like 400+. Only comparing to my father inlaws Z06 corvette. Mines noticably faster.

 

If i dont need those things bc i dont make enough power. What do i need to do to get to that point?

 

First take your weight add it to the cars weight and estimate your ET, then go to the track and report how far off I was. Since you mention you are noticeably faster than a Z06 one of us is in for a surprise. That's why they have drag strips and time slips--to eliminate the "I think" we both gave our opinion now visit the track. Few setups develope the advertised hp, a Corvette engine has cold air as one change that is a negative when transplanted. There are many differences you shouldn't assume you started with the 300 RWHP, you probably didn't. Also remember RWHP is more than flywheel so 50 RWHP is a LOT.

Verify what your performance is now, then from your time determine your hp and what the car really needs.

If you need injectors your data will show the injectors with a duty cycle >.90 another reason to collect data, is because it measures how much air your engine flows, and will show how your engine inlet air temperature changes, and other parameters changes as the car runs down the track. Data is like a 1000 pictures and will help you to know what is needed instead of trying things that worked on other cars.

Most areas have a track near by and it will quickly prove where you hang relative to a Z06 since their performance is well known. Seems they make ~400 RWHP and weigh around 3100 if my friend with one didn't lie to me.

Guesstimates are fun, but to make meaningful changes you need to know where your car is now, and decide where you want it to be. Don't buy a piece here and there plan where you want the car to be when it is 'complete'.

 

1. No track within 150 miles.
2. Fathers Z06 is an 01' 385 HP car. 385 refering to flywheel HP.
3. I dont really care what it will do at the track. This isnt a track car. Im considering leaving the 308 gears in bc i like the driveability. got on interstate this weekend, @80mph i was turning 1500rpm is 6th!
4. I still dont see any answer to my question.
5. What mods do i need to do now?
6. That calculator excludes WAY too many variables to be anywhere near accurate!

 

Fathers Z06 is an 01' 385 HP car. 385 refering to flywheel HP.

Interesting that an LT1 is said to have 375 flywheel and that GM could only muster 10 more flywheel hp with all the mod's they did to the LS1 let alone one of their premiere engines in the Z06.

If GM can only gain 10 Flywheel with all their changes they made between the LT1 and the models of LSX, I can't come up with anything more than the CAI I suggested from the start.

Good luck

PS
That calculator excludes WAY too many variables to be anywhere near accurate!

The calculator INCLUDES all variables and tells you how well your system operates in the real world. What is better than empirical data derived from the laws of physics?

 

Depending on who ported your heads and what they flow you could easily be at 350 rwhp. I think a CAI, TB and gears would do well on your car. Injectors could help out, but it all depends on how much power you are making. If your injectors aren't big enough you could be spraying at the back of a closed intake valve which obviously isn't an ideal situation.

 

Here are some comparisons of different year Corvettes

http://www.corvetteguys.com/1996-che...-corvette.html

http://www.corvetteguys.com/1997-che...-corvette.html

http://www.corvetteguys.com/2001-che...-corvette.html

This site allows you to compare hp ratings and times of different cars

Good luck with your comparisons, and finding what you want.

 

Someone correct my if Im wrong but nowadays manufacturers always use flywheel hp rather than rwhp. my LT1 being 300 and his 01' Z06 being 385?

"The calculator INCLUDES all variables" what about gear ratio? are they assuming you have a specific gear ratio? I didnt enter mine. Thats gonna make a big dif.

 

looking at those sites. LT1 has 300 LS6 has 385. Wait, isnt that what i said???? whered you get that 375 from????? I think, everyone else thinks, you think, you know more than you actually do......