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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Just got dyno'd

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Old Jan 7, 2008 | 07:04 PM
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Originally Posted by mdacton
What more info can you give on the cyl. heads?
Unknown. Heads are ported, Do not have any flow numbers.
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Old Jan 7, 2008 | 07:06 PM
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Originally Posted by awdfun
Unknown. Heads are ported, Do not have any flow numbers.
Man it could be so many differant things.....

If I was you I would pull the heads back off flow them and cc them. You will never get any power if you don't know what your working with
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Old Jan 7, 2008 | 07:08 PM
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Originally Posted by awdfun
Unknown. Heads are ported, Do not have any flow numbers.
Did you get the combustion chambers CC'd?
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Old Jan 7, 2008 | 07:10 PM
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What are your future plans? any nitrous or FI?

I would change the pistons too...it sucks but...I would, the numbers don't lie
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Old Jan 7, 2008 | 07:11 PM
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Originally Posted by MeanGreen97Z
Ya good numbers... we have no idea what else he has and can only assume that is all that is in the motor. 380 on a base dyno is a good number to work from if you are in the early stages of a build.
you do realize its 380 tq and 330 hp right?
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Old Jan 7, 2008 | 07:13 PM
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Originally Posted by mdacton
What are your future plans? any nitrous or FI?

I would change the pistons too...it sucks but...I would, the numbers don't lie
Whats wrong with these pistons. Compression should be around 10.9 -11:1 shouldnt it?
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Old Jan 7, 2008 | 07:14 PM
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those pistons are severely lowering your compression if youre staying n/a nobody can estimate ur compression too much without knowing the chamber size of your heads
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Old Jan 7, 2008 | 07:14 PM
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Originally Posted by awdfun
Whats wrong with these pistons. Compression should be around 10.9 -11:1 shouldnt it?
we can't calculate til you cc the combustion chamber......and whats the deck ht.?

I would want more compression than that.......
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Old Jan 7, 2008 | 07:15 PM
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Yup but looking at that component list... there is the explanation.
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Old Jan 7, 2008 | 07:18 PM
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It would only make sense to use that piston if the block wasn't decked and if the combustion chamber was close to stock CC?
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Old Jan 7, 2008 | 07:21 PM
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Originally Posted by SS RRR
It would only make sense to use that piston if the block wasn't decked and if the combustion chamber was close to stock CC?
He could run more and not change anything else and make more power......

If the block is not decked it would be around 10.6 with a 56cc head.....just a rough estimate.
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Old Jan 7, 2008 | 07:23 PM
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Originally Posted by mdacton
He could run more and not change anything else and make more power......

If the block is not decked it would be around 10.6 with a 56cc head.....just a rough estimate.
Do you mean w/ the pistons he has now? I just entered 54cc and w/ the pistons he's running now it came out to 11.0.
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Old Jan 7, 2008 | 07:24 PM
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Block has been decked and the combustion chamber is stock.
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Old Jan 7, 2008 | 07:24 PM
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Your problems are listed below.

THESE 2 TOGETHER UNLESS YOU HAVE A ZERO DECK BLOCK AND EVEN IF YOU DID YOUR COMPRESSION IS LOW
SRP -12cc Dish Pistons
Felpro 1074 Head Gasket .039

YOU MAY NEED 42LB DEPENDING ON DUTY CYCLE
30lb SVO Injectors

NO WAY YOU NEED THIS AT THAT POWER LEVEL
3.5" Maf

NEEDS TO BE A 58MM
52mm TB

NEEDS A TUNE ON A DYNO
PCMforless tune

THESE TYPICALLY READ 20-30 HP LOWER THAN A DYNOJET
Dynapack Dyno


My car made 329RWHP with ALL the bolt ons a six speed and a 3.73 geared 10 bolt. This car should make 400rwhp through the 9 inch on a dynojet.

David
Last edited by FASTFATBOY; Jan 7, 2008 at 07:28 PM.
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Old Jan 7, 2008 | 07:25 PM
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the torque # seem in line why is there such a diference with the hp# this is a good thread and i'm learning a bunch as is the starter of it i'm sure
Last edited by remaxracer45; Jan 7, 2008 at 07:31 PM.
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