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

LT1 +50 HP

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Old Feb 24, 2002 | 07:13 PM
  #1  
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Default LT1 +50 HP

What would be the easiest way to add about 50 hp to an LT1 engine?

Heads and Cam would be my thought, but I don't know much about it.
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Old Feb 24, 2002 | 07:25 PM
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Default Re: LT1 +50 HP (Bradley3)

heads and cam will add more than 50 i think, with the right combination. AFR heads and a LT4 hotcam will definitely get you there. Better gears might make you feel like you have 50 more hp
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Old Feb 24, 2002 | 07:29 PM
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Default Re: LT1 +50 HP (Bradley3)

I did the LT4 hot cam with 1.6 Roller Rockers. I also added an electric water pump at the same time. All of that gave me an extra 44 hp and was still completely emissions legal.

I installed long tube headers, x-pipe and flowmasters and picked up another 23 hp and 32 pounds of torque.

It's not really hard to add 50 hp to an LT1. I was 270 stock, I make 336 now, with heads I could be pushing near 400.

follow the link below to find my dyno graphs.
http://12.222.168.65/htmls/dyno_corvette.html
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Old Feb 24, 2002 | 08:05 PM
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Default Re: LT1 +50 HP (Nathan Plemons)

The easiet, and cheapest way to get an extra 50+ hp would have to be nitrous.
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Old Feb 24, 2002 | 08:51 PM
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Default Re: LT1 +50 HP (Bradley3)

Well I didn't realize heads were close to 2 grand!

With an LT4 Hot Cam and Roller Rockers I should be pretty close to my goal...

Now I'm just hoping that I can find a place to install them for a reasonable price :eek:
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Old Feb 24, 2002 | 08:53 PM
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Default Re: LT1 +50 HP (Bradley3)

Well I didn't realize heads were close to 2 grand!
You get what you pay for! :) The real question is... how fast do you really want to go? :D:D
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Old Feb 24, 2002 | 08:53 PM
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Default Re: LT1 +50 HP (Bradley3)

you could prolly find someone to port out your current heads a little, no point in messing with the cam if youre not messing with the heads
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Old Feb 24, 2002 | 09:23 PM
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Default Re: LT1 +50 HP (Nathan Plemons)

:yesnod: :yesnod: LT4 HOT cam kit and a couple things like exhaust etc.. and you'll get 50hp.
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Old Feb 24, 2002 | 09:31 PM
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Default Re: LT1 +50 HP (Glock'94)

I got a set of stock heads and intake from Gene @ Karshop for $390 shipped. Another 800 into the heads plus 180 for the cam and you got about 60 horses for under 1500. :cool: :yesnod:
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Old Feb 24, 2002 | 09:42 PM
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Default Re: LT1 +50 HP (Bradley3)

LT1+50hp. Buy a LT4 :crazy: :crazy:
Just kidding.

Can't get that hp with bolt-ons or exhaust. Have to do serious engine work for those gains. All exhaust+bolt-ons wont give ya close to 50hp on a LT1/LT4.
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Old Feb 25, 2002 | 12:02 AM
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Default Re: LT1 +50 HP (Andy1983)

Can't get that hp with bolt-ons or exhaust. Have to do serious engine work for those gains.
Nitrous would do it in a heart beat.. and a 50 HP shot would be very safe. Don't even need to touch the valve covers to do it either :)
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Old Feb 25, 2002 | 12:15 AM
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Default Re: LT1 +50 HP (vader86)

you could prolly find someone to port out your current heads a little, no point in messing with the cam if youre not messing with the heads
I'll disagree. I'm living proof that you can make pretty good power on stock heads. Now there's plenty of room for improvement mind you. If you're good you can change a set of heads in a day or two. That's what I hope to do, when I get new heads I'll just swap them out and not have to tear into the shortblock at all.
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Old Feb 25, 2002 | 01:41 AM
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Default Re: LT1 +50 HP (Bradley3)

What kind of horse power/torque gain could you get if you put long tubes, 3" piping, high flo cats and a pair of good performance mufflers on, if everything else was stock?

Obviously you'd need head/cam work etc. to reap the full benifit.
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Old Feb 25, 2002 | 03:21 AM
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Default Re: LT1 +50 HP (BowTieBlood)

Id bet longtube headers and a performace chip would net 50hp.
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Old Feb 25, 2002 | 04:29 AM
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Default Re: LT1 +50 HP (93aquaConvert)

Id bet longtube headers and a performace chip would net 50hp.
If you dump the cats and do intake work at the same time. Headers by themselves will give ya like 30hp max usually. A chip isn't going to do a WHOLE lot on a stock setup. Advanced timing is always good though.
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Old Feb 25, 2002 | 05:43 AM
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Default Re: LT1 +50 HP (Glock'94)

Yea a custom chip isint going to do a whole lot but they are known to drop .2 to .3 off youre 1/4 mile times which would equal 20-30hp..
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Old Feb 25, 2002 | 06:03 AM
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Default Re: LT1 +50 HP (93aquaConvert)

I dont know what Andy1984 is talkin abought but there are a lot of bolt ons you can do to get more than 50hp out of a lt1..

Exhaust 10-15hp
k@n filter open lid 10-15hp
longtubeheaders 20-30hp
pulleys 10-12hp
roller rockers 10-15hp
ported and polished intake manifold 10-15hp
52mm throttle body 10-15hp
adjustable fuel pressure regulator ?
bypass throttle body?
custom chip 10-30 hp

That should be more than 50hp for just bolt ons huh?
:D
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Old Feb 25, 2002 | 09:20 AM
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Default Re: LT1 +50 HP (93aquaConvert)

Exhaust 10-15hp
k@n filter open lid 10-15hp
longtubeheaders 20-30hp
pulleys 10-12hp
roller rockers 10-15hp
ported and polished intake manifold 10-15hp
52mm throttle body 10-15hp
adjustable fuel pressure regulator ?
bypass throttle body?
custom chip 10-30 hp
who the hell gave you those numbers?
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Old Feb 25, 2002 | 09:28 AM
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Default Re: LT1 +50 HP (vader86)

Type R stickers are good for horsepower as well :jester

I'm afraid you can't go by the advertised horsepower gains of the bolt ons. Too many have tried it just to be disappointed. I did exhaust AND longtube headers and only picked up 23 hp. I'm fixing to prove that the throttle body didn't give me much of anything, as soon as I can get back to the dyno again.
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Old Feb 25, 2002 | 11:36 AM
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Default Re: LT1 +50 HP (Nathan Plemons)

What are you having a hard time believing vader? As far as the 52mm throttle body that yellow vette on the net with alot of mods claims .2 reduction with bbk 52mm :rolleyes:
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