LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

hp estimate please

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Old 11-17-2008, 09:40 PM
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hp estimate please

just wondering what kind of hp im pushin after the lt1 swap,mods are in sig,thanks in advance,joe

Last edited by bmfIROC-Z; 11-18-2008 at 03:12 PM.
Old 11-18-2008, 06:22 PM
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hp estimate please

just wondering what kind of hp im pushin after the lt1 swap,mods are in sig,thanks in advance,joe
Old 11-18-2008, 09:33 PM
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Re: hp estimate please

With no cam specs its hard to say but according to my desktop dyno you should be in the 325 hp range maybe 350hp with the custom tune.
Old 11-18-2008, 09:41 PM
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You already asked once. I moved it to the LTX and LSX engine swap subforum because that's where we discuss LTx engines.
Old 11-18-2008, 09:49 PM
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Re: hp estimate please

Originally Posted by five7kid
You already asked once. I moved it to the LTX and LSX engine swap subforum because that's where we discuss LTx engines.
Yeah obviously i know that. i wasnt sure if i posted in the right forum thats why i reposted in the tech/general engine forum.
Old 11-18-2008, 10:01 PM
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Re: hp estimate please

Originally Posted by jackel200269
With no cam specs its hard to say but according to my desktop dyno you should be in the 325 hp range maybe 350hp with the custom tune.
its the stock 94 f-body lt1 cam i got these specs from another sight:duration 230/208,lift .450/.460, lobe 116 ,hope that helps,the 325-350 hp that would be at the flywheel right?thanks for the reply,joe
Old 11-18-2008, 10:05 PM
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Re: hp estimate please

Yahh, and those cam specs are near to what I figured.
Old 11-18-2008, 10:18 PM
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Re: hp estimate please

ok thank you,just curious what 325-350hp would translate to in whp?

Last edited by bmfIROC-Z; 11-18-2008 at 10:33 PM.
Old 11-18-2008, 10:58 PM
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Re: hp estimate please

250-260
Old 11-18-2008, 11:56 PM
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Re: hp estimate please

Originally Posted by bmfIROC-Z
ok thank you,just curious what 325-350hp would translate to in whp?
Originally Posted by kowboy59
250-260
Could someone take it one step further and convert that into 1/4 time....
Old 11-19-2008, 12:14 AM
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Re: hp estimate please

Originally Posted by skyhigh4by
Could someone take it one step further and convert that into 1/4 time....
http://www.dragtimes.com/horsepower-...calculator.php

http://www.dsm.org/tools/calchp.htm


http://www.fastcoolcars.com/hp_calculator.htm

Standard 20%+/- between chp and whp.
Old 11-19-2008, 12:51 AM
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Re: hp estimate please

so i would have closer to 260-280 whp?
Old 11-19-2008, 09:05 AM
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Re: hp estimate please

Stock 94 LT1 rated at 275 chp.
Add 50 hp (maybe) for your mods. 325 chp.
Less 20% gets you 260 whp.
260 whp in a 3650 lb vehicle might get you 14 sec at 98 mph.
Old 11-19-2008, 12:37 PM
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Re: hp estimate please

Originally Posted by skinny z
Stock 94 LT1 rated at 275 chp.
Add 50 hp (maybe) for your mods. 325 chp.
Less 20% gets you 260 whp.
260 whp in a 3650 lb vehicle might get you 14 sec at 98 mph.
my car weighs 3440lbs with me in it and a 1/4 tank of gas so i might do a little better than 14 sec
Old 11-19-2008, 01:14 PM
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Re: hp estimate please

well stock i think the lt1s ran low 14s i think around a 14.2 or so, so with those mods if i had to guess id say youd be around 14 flat or so depending on suspension you could gain more, its not all in the amount of power your putting to the ground its how you put it to ground.
Old 11-19-2008, 02:11 PM
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Re: hp estimate please

i ran 14.8 when it still had the 305 tpi,im guessing in the high 13's but we shall see in the spring
Old 11-19-2008, 04:00 PM
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Re: hp estimate please

Stock 305? cuz i got a best of 15.09 with my stock 305 stock suspension and my friends 350 tpi does a best of 14.8 all stock. and from what i see your lt1 is pretty much stock unless i missed something. so i would be happy with right around a 14


Originally Posted by bmfIROC-Z
i ran 14.8 when it still had the 305 tpi,im guessing in the high 13's but we shall see in the spring
Old 11-19-2008, 04:43 PM
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Re: hp estimate please

Originally Posted by iroc1793
Stock 305? cuz i got a best of 15.09 with my stock 305 stock suspension and my friends 350 tpi does a best of 14.8 all stock. and from what i see your lt1 is pretty much stock unless i missed something. so i would be happy with right around a 14
15.09 thats pretty quick for a stock 305 tpi auto,most stock 305 tpi auto's ive seen run 15.4-15.6,my 305 had stock bore full bolt ons,p&p heads, ram air ,stock suspension and no tune(hypercrap chip) ,yeah my lt1 is pretty much stock but i seen a stock lt1 trans am on youtube with only a cutout,tune and 3200 stall and it ran a 13.8@98mph and from what the 1/4 mile calculator i used said a car weighing 3440lbs with a whp of 260 would run a 13.7,but like i said well see this spring and i would be fine with a flat 14

Last edited by bmfIROC-Z; 11-19-2008 at 07:37 PM.
Old 11-20-2008, 02:09 PM
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Re: hp estimate please

It's all in the first 60 feet!

Last edited by skinny z; 11-20-2008 at 02:20 PM.
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