help, i have a 408 with t76, what mod next?
#24
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Originally Posted by parish8
it is a special made unit just for the cmotorsports kits. i think the dimentions of the core are about 4.5"x9x9. here is a pic.
![](http://www.neufamily.org/03html/pics/turbo-pics/images/DSCN1678.jpg)
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#25
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Honestly Jim, if you want to make the turbo work less and drop you IAT's while making a **** load more power...PUT a good set of heads on this thing. You are chocking the heck out of it right now. That same amount of boost will net you stronger results because you are increasing Motor efficientcy. Thats the key to making power.
Rick
Rick
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Originally Posted by Flipper
Any Idea how much CFM it flows?
#27
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Originally Posted by XLR8NSS
It looks real similiar to the unit shown in the attatchment which flows 1500cfm. That should be good for about 1000hp at the flywheel.
#29
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I guess this is the ole snow ball effect... Started out content with 500 -700 hp and now cant get enough huh... It sux! If you decided to go for Heads, Turbo, intercooler your talking about 5 G's or more... I feel your pain my friend..
And they say crack is an addiction![](http://www.z06vette.com/forums/images/smilies/drink4.gif)
Is there such a thing as enough?
If we could only see into the future...
And they say crack is an addiction
![](http://www.z06vette.com/forums/images/smilies/drink4.gif)
Is there such a thing as enough?
If we could only see into the future...
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#30
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Originally Posted by Flipper
I guess this is the ole snow ball effect... Started out content with 500 -700 hp and now cant get enough huh... It sux! If you decided to go for Heads, Turbo, intercooler your talking about 5 G's or more... I feel your pain my friend..
And they say crack is an addiction![](http://www.z06vette.com/forums/images/smilies/drink4.gif)
Is there such a thing as enough?
If we could only see into the future...![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
And they say crack is an addiction
![](http://www.z06vette.com/forums/images/smilies/drink4.gif)
Is there such a thing as enough?
If we could only see into the future...
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
eventualy i will have a monster intercooler, a thumper and heads. just trying to decide what is holding me back the most right now.
seems people are all over the place on this one. i was hoping for a general agreement on what would give me the most for now but everyone is sugesting diferent things.
i just went and measured it. it is 4.5" x 7" x 9" so it is smaller than the one you posted.
i dont think it is a restriction but i am sure it could do more cooling.
#31
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I agree on the T-88 and perhaps a small shot of N2O on the intercooler for track passes... just to ceool her down a lilttle,... but the turbo, when in its efficiency range will not create as much heat as whn its out of range, so I think thats your answer. I run two 76mm small frame units...(had front, now almost done with rear) and my IATs have been fine, even with a weak intercooler.
#32
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Originally Posted by parish8
i just went and measured it. it is 4.5" x 7" x 9" so it is smaller than the one you posted.
i dont think it is a restriction but i am sure it could do more cooling.
i dont think it is a restriction but i am sure it could do more cooling.
#33
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well, if your out of the ideal efficency range, sounds like you should set up to a bigger turbo.
Though i still think your IC is a bit undersized. you're going to need over 100 square inches of airflow area for that much HP. you have about half that.
you could step up to an T88, a T6 frame would be good, but if you dont want to change your header then keep the t4 flange and do something like a percision, it should be able to take you up to 1000rwhp
Though i still think your IC is a bit undersized. you're going to need over 100 square inches of airflow area for that much HP. you have about half that.
you could step up to an T88, a T6 frame would be good, but if you dont want to change your header then keep the t4 flange and do something like a percision, it should be able to take you up to 1000rwhp
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Well, my 0.02 is to do heads for 2 reasons. First, as Rick said, you are really choking the 408 with stock heads on it. Second, while you might be pushing out of the efficiency range now, better flowing heads will change that and you may not need a new turbo. I don't remember the exact figure, but if memory serves a t76 should support very close to 1000 hp.
#35
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Originally Posted by TurboBerserker
Well, my 0.02 is to do heads for 2 reasons. First, as Rick said, you are really choking the 408 with stock heads on it. Second, while you might be pushing out of the efficiency range now, better flowing heads will change that and you may not need a new turbo. I don't remember the exact figure, but if memory serves a t76 should support very close to 1000 hp.
seems like the best route would be steping up the turbo.
#36
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I would think with better heads you could flow more volume with less pressure, so your turbo would not be working as hard and your intake temps would be lower. You would see less boost, but more, cooler, denser air. I'd say you would still need a bigger turbo to go with those heads, to really take advantage of them and keep you compressor in it efficiency range.
#37
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Originally Posted by kbracing96
I would think with better heads you could flow more volume with less pressure, so your turbo would not be working as hard and your intake temps would be lower. You would see less boost, but more, cooler, denser air. I'd say you would still need a bigger turbo to go with those heads, to really take advantage of them and keep you compressor in it efficiency range.
#39
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You would be best off upgrading the Turbo to save you so many headaches. Not to mention the nice chunck of change you could get selling your T-76. You will get next to nothing for your stock heads. I really do not see how a head with a 210cc runner is chocking this motor. People make a lot more with less runner. IF the heads are chocking it so bad then the intake would be doing the same. The Turbo is the problem. The high IAT's is from a compressor housing that is too small. The kr problems are from the combonation of the small t-4 hot side and the log/downpipe.
#40
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i have no knock problems. i was running aprox 103 octane and didn't see any knock at all. now that i think about it i should have tried a little more timing.
now for what turbo.
i dont plan on pushing 2000hp or anything like that. i think the 300-400hp more that the t88 would offer me is going to be pleanty. is there any other turbo i should consider?
now for what turbo.
i dont plan on pushing 2000hp or anything like that. i think the 300-400hp more that the t88 would offer me is going to be pleanty. is there any other turbo i should consider?