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

Lt1 350 torque monster

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Old Oct 23, 2005 | 01:36 PM
  #21  
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Originally Posted by Alvin
IMHO

The Superram is a great choice for a L98 guy.. but there is absoulutely nothing lacking from a LT1's torque curve from heavily modified to stock. Notice the broad torque curve in this little collection of LT1 dynosheets.

Theres no way in hell I would put a superram on a LT1.. LT1's are torque monsters from the factory with the ability to pull to 6500rpm with the right heads/cam.
Those are nice.. So with a ported LT intake on top of a 383, I could get solid torque above 400 hp from 3000 rpm up to 5500/6000, and max power above 6000 rpm and a red line of 6500?
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Old Oct 23, 2005 | 02:51 PM
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Yes, look at every one of those sheets.. the torque curves are extermely broad and smooth.
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Old Oct 23, 2005 | 05:03 PM
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yup the short runners of the lt1 are great at high rpm range, of course they give up a just bit of torque on the low end (but who races at 2-3k? besides the stroker kit more than makes up for that!)
remeber mostly what you're doing by adding those parts is raising the torque, the curve of that lt1 will remain quite flat and help distrbute that power over longer distances...
The mid length super ram runners help with the low end as well as the high end and the whole thing fits under a stock hood.
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Old Oct 23, 2005 | 05:12 PM
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The runner lenght in the superram pretty much make it over with at 5800+ rpm.

Out of all the cars we dyno the LT1 is always a extremely torquey nice curve.... That includes all the mustang 2v, 3v, 4v, 5.0, LS1, L98, etc.
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Old Oct 23, 2005 | 05:15 PM
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Originally Posted by Alvin
IMHO

The Superram is a great choice for a L98 guy..

Theres no way in hell I would put a superram on a LT1..
I agree totally,a waste of money and time on an LT1.It might feel a little stronger in the street,(maybe at the stoplights)but I would bet an LT1 with similar components and a ported LT1 or 4 manifold would wave in the 1/4,or out on the highway.Plus,they always seem to leak.
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Old Oct 23, 2005 | 08:43 PM
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Originally Posted by Alvin
The runner lenght in the superram pretty much make it over with at 5800+ rpm.

Out of all the cars we dyno the LT1 is always a extremely torquey nice curve.... That includes all the mustang 2v, 3v, 4v, 5.0, LS1, L98, etc.
Interesting...the Lt intakes would be a much better for a stroker then? the 350 may benefit from the superram, but i'd guess that if you have a nice high revvin 383 you'd make the most outta the Lt intakes.
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Old Oct 23, 2005 | 08:46 PM
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It doesn't lack torque in a 350 either. Sure the superram might make more torque before say 4k, but it also looses torque and hp much past 5k. I'll bet if you do the math you'll find that the LT1 has more total under the curve torque and horsepower.
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Old Oct 23, 2005 | 08:54 PM
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wow good to know! yeah under the curve is right huh! gotta lookup my calculus.
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Old Oct 23, 2005 | 09:29 PM
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Alvin,

Do you know/remember what the set up was on the motors for the 2nd and 4th graphs?
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Old Oct 23, 2005 | 09:35 PM
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2nd was a procharged intercooled automatic vette 355cid with a 305 camshaft

4th was a 396 hotcammed 93 vette.
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Old Oct 23, 2005 | 10:06 PM
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The 5th says hotcamed 396, I figure the 4th was a blower like the 2nd, because it was 500+ HP.
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Old Oct 23, 2005 | 10:16 PM
  #32  
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woops sorry, don't know how to count. The 4th is actually my own

LT1 355cid 210/220@ .050 cam stock intake, cleaned up heads, vortech aftercooled 6 speed.
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Old Oct 23, 2005 | 11:07 PM
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Originally Posted by 95wht6spd
The 5th says hotcamed 396, I figure the 4th was a blower like the 2nd, because it was 500+ HP.
It(5th) was mine
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Old Oct 24, 2005 | 09:29 AM
  #34  
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I dont know if i'd spend the money to buy a SR if i already had an LT1, but IMO the SR is a better intake for a street/strip 350. It's a lot easier to utilize the low end torque in a street config than making the tradeoffs to optimize the top end. And in a heavy street car, torque is more important to get the car moving. I know this well beaten debate, but that's just been my experience building/observing both setups. Carry on................................
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Old Oct 24, 2005 | 09:58 AM
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Sounds like a hell of a lot of money to make about 50-60 hp, if moneys no object have at it. Did they do this buildup in d.c.? .....we know moneys no object there! You need to take any magazine article with a grain of salt, if you wait 30 days some one will come out saying something else!.....joe
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Old Oct 24, 2005 | 11:17 AM
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Originally Posted by 95wht6spd
The 5th says hotcamed 396, I figure the 4th was a blower like the 2nd, because it was 500+ HP.
I like the 396, do you have anymore particulars on that one?
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Old Oct 24, 2005 | 11:49 AM
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Originally Posted by BRICHC4
I like the 396, do you have anymore particulars on that one?
Here is the motor.
http://www.moreperformanceinc.com/lt1_396_417-400.php
Hot Cam, (had Comp Cams 941 sorings , now 918's), CNC heads from Florida, AS&M 58MM T Body, DRM 1 3/4 Stainless coated heads,1.6 Crower Enduro II Roller Rockers, Ported LT1 manifold. Flowmaster FII system, 2800 Vigilante, 3.75 D44 rear
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