C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Went to the Dyno

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Old Jun 21, 2008 | 08:01 PM
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Default Went to the Dyno

http://www.youtube.com/watch?v=5V5tg1q0ZH4

You can go to the link above to see it on the dyno. I can't seem to get my dyno sheet up loaded, so I'll tell you my numbers and you all can tell me what you think. The car is a 95 lt1 with a head and cam pkg. Here are the numbers 337.56RWHP and 341.48TORQUE at 5800rpm. Thanks for your input.
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Old Jun 21, 2008 | 09:17 PM
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There are a couple of things you should add to the thread so that people can make informed responses.
What type dyno?
Ballpark info on the cam and the supporting mods?

Ok I went to your sig and got the following info:

Port and polished heads, cc306 comp cam, crane roller rockers, manley push rods, srp forged pistons, magnaflow exhaust, nitto drag slicks, port and polished intake, zr1 rims, 6" kenwood t.v, custom floor mats, custom paint job. That's...That's about it!!!


Do you have headers and is it a manual or auto? If A4 stall and gears? If you have an A4 with stock gears/converter, exhaust manifolds; and its a mustang dyno you're about where I'd expect a 350 with a CC306 to be at. The CC306 specs 230/244 @ .050", .510"/.540", 112 LSA.

Last edited by aboatguy; Jun 21, 2008 at 09:50 PM.
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Old Jun 21, 2008 | 09:52 PM
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Stock gears, manifolds, and the car is a 6spd. I do plan on putting a set of long tube headers, and making another dyno run.
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Old Jun 21, 2008 | 09:57 PM
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Originally Posted by "J"
Stock gears, manifolds, and the car is a 6spd. I do plan on putting a set of long tube headers, and making another dyno run.
I just saw your other thread and it answered all of my questions. Did it have any spark retard? I'd think it would pull bigger numbers with the 355 than it did with the stock shortblock since its the same combo.

Are you still running the stock fuel pump. I ran into fuel problems on my 355 build the stock pump would test ok at Idle (with and with out the vacuum to the FPR) and around town but in the top of 3rd gear WOT (I have an A4) the fuel pressure would end up in the 20s.

I hope you find the power!

Last edited by aboatguy; Jun 21, 2008 at 10:05 PM.
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Old Jun 21, 2008 | 09:59 PM
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On any dyno except a "Mustang" dyno, those numbers are very weak for your mods.
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Old Jun 21, 2008 | 10:04 PM
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The frist pull was the worst! My air fuel ratio was running in the 15 range . So 95bluebomber cleaned the mass air flow sensor; an we got about a 10 hp gain with the air fuel in the 12 range.
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Old Jun 21, 2008 | 10:07 PM
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Originally Posted by STL94LT1
On any dyno except a "Mustang" dyno, those numbers are very weak for your mods.
Where do you think my numbers should be. On a dynojet.
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Old Jun 21, 2008 | 10:11 PM
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Originally Posted by STL94LT1
On any dyno except a "Mustang" dyno, those numbers are very weak for your mods.
I'd be disapointed with those numbers on a Mustang dyno (...and I have an A4 and been on a Mustang dyno)

With the ported intake and CC306 LTs may wake that puppy up.

Mike
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Old Jun 21, 2008 | 10:12 PM
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Originally Posted by "J"
Where do you think my numbers should be. On a dynojet.
If your heads flow decently 375-385 rwhp



350-360 Mustang

Last edited by aboatguy; Jun 21, 2008 at 10:14 PM.
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Old Jun 21, 2008 | 10:18 PM
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My 95 with CAI, 1.6 rockers, catback and PCM for less tune made 310hp and 340tq on a dynojet. With a head and cam setup you should see 370hp+ at the rear.
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Old Jun 21, 2008 | 10:20 PM
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Originally Posted by aboatguy
If your heads flow decently 375-385 rwhp



350-360 Mustang
The car made 365rwhp about 2yrs ago, But since then i have put magnaflow mufflers and built it to a 355. So wounder where the power is going . Any opinions? Compression? Air flow? In need of new plug wires and plugs. Thanks J
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Old Jun 21, 2008 | 10:22 PM
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Originally Posted by Jonnymac
My 95 with CAI, 1.6 rockers, catback and PCM for less tune made 310hp and 340tq on a dynojet. With a head and cam setup you should see 370hp+ at the rear.
Nice torque number
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Old Jun 21, 2008 | 10:24 PM
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Post a idleing video please im thinking about get a cc306.
P.S. Headers and intake manifold should add 30-40hp because the stock manifolds are like blowing though a needle where LT's would be blowing through a straw.
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Old Jun 21, 2008 | 10:25 PM
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oh my car with EM LT's and SLP CAI on a mustang dyno i made 300hp and 330 torque
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Old Jun 21, 2008 | 10:26 PM
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Originally Posted by "J"
The car made 365rwhp about 2yrs ago, But since then i have put magnaflow mufflers and built it to a 355. So wounder where the power is going . Any opinions? Compression? Air flow? In need of new plug wires and plugs. Thanks J
I read your other thread hence the guesstimate (since the overbore should have helped unshroud your valves and bumped the compression a little)

Maybe magnaflows don't flow as well as what was on it or the compression changed and you need a tune.....or the rebuild is tight than the old short block and so you have a higher frictional load, ....new rear tire wheel combo "heavier/higher rolling resistance.....old dyno friendlier than this one.


Mike

Last edited by aboatguy; Jun 21, 2008 at 10:30 PM.
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Old Jun 21, 2008 | 10:30 PM
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Originally Posted by -WhItE_NoIsE-
Post a idleing video please im thinking about get a cc306.
P.S. Headers and intake manifold should add 30-40hp because the stock manifolds are like blowing though a needle where LT's would be blowing through a straw.
I have a video of the car on dyno at the top of the page, if that does not help let me know and i well see what i can do.
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Old Jun 21, 2008 | 10:36 PM
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Originally Posted by "J"
I have a video of the car on dyno at the top of the page, if that does not help let me know and i well see what i can do.
I was hoping for a behind the car start up idle video it would mean alot because i have looked every where for a video of a cc306 in a vette.
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Old Jun 21, 2008 | 10:40 PM
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Originally Posted by aboatguy
I read your other thread hence the guesstimate (since the overbore should have helped unshroud your valves and bumped the compression a little)

Maybe magnaflows don't flow as well as what was on it or the compression changed and you need a tune.....or the rebuild is tight than the old short block and so you have a higher frictional load, ....new rear tire wheel combo "heavier/higher rolling resistance.....old dyno friendlier than this one.


Mike
I like the friendly dyno answer . I wounder if my push rods are too long? Right after the rebuild i had a problem with the setup height. I called comp and they told me what I need as far as valvetrain. What do you do about the friction problem?
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Old Jun 21, 2008 | 10:41 PM
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Originally Posted by -WhItE_NoIsE-
I was hoping for a behind the car start up idle video it would mean alot because i have looked every where for a video of a cc306 in a vette.
I well see what i can do for you, but give me alittle time
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Old Jun 21, 2008 | 10:54 PM
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Originally Posted by "J"
I well see what i can do for you, but give me alittle time
Ok thanks man!
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