LT1 > LS1? Some ideas why...hehe
On The Tree
Joined: Nov 2004
Posts: 119
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Originally Posted by 97blkz
Either motor can be made badass!! But the ls1 guys tend to go lq4 block for some reason??? Humm all this aluminum talk but guys switch??
ok.. stock for stock.. the LS1 is a better motor to throw on some bolt ons and go. But Think about this. The LSx cars have something like a .497 lift cam (in 98 and 99) and heads that outflow any heads even MADE for the LTx motors (so people say). The LT1 have something like .447 lift cam and inferior heads.
Lets take a LT1 car and comvert normal smallblock heads to work on it. These smallblock heads will flow just the same as the stock LS1 heads. Then, for comparisons sake, lets put a cam in the LT1 that has the identical specs as the LS1 cam. Im willing to say, after doign these two things and making the motoes "even", that the LT1 would take the LS1. If it doesn't beat it it will run side by side (but im sure it will beat it).
So at this point, the only thing the LSx motors have on the LTx motors is weight... but im not afraid of 100 lbs. The LSx f-bodys are supposed to be heavier than the LTx cars anyways.
Any opinions on this?
Lets take a LT1 car and comvert normal smallblock heads to work on it. These smallblock heads will flow just the same as the stock LS1 heads. Then, for comparisons sake, lets put a cam in the LT1 that has the identical specs as the LS1 cam. Im willing to say, after doign these two things and making the motoes "even", that the LT1 would take the LS1. If it doesn't beat it it will run side by side (but im sure it will beat it).
So at this point, the only thing the LSx motors have on the LTx motors is weight... but im not afraid of 100 lbs. The LSx f-bodys are supposed to be heavier than the LTx cars anyways.
Any opinions on this?
TECH Enthusiast
Joined: Oct 2005
Posts: 714
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From: Tennessee
Lets take a LT1 car and comvert normal smallblock heads to work on it. These smallblock heads will flow just the same as the stock LS1 heads. Then, for comparisons sake, lets put a cam in the LT1 that has the identical specs as the LS1 cam. Im willing to say, after doign these two things and making the motoes "even", that the LT1 would take the LS1. If it doesn't beat it it will run side by side (but im sure it will beat it).
Originally Posted by tekprodave
Iron blocks are WAY cheaper to build. That's why they do it. LT1's will always have an edge in the "bang for the buck" category. We already have a good iron block so we don't need to buy one.
That's not why we do it. We do it because you can bore the iron blocks out more than the aluminum ones. The 98 blocks can only take a light hone. I'm not sure I totally agree with the bang for the buck thing either. LS1's and their aftermarket parts are getting cheaper and cheaper all the time, with all the competition. You might spend a little bit more on an LS1, but you get 40rwhp extra and a huge aftermarket. The bang for the buck value between the cars is pretty close.
Last edited by Redneck Z; Dec 30, 2005 at 08:23 PM.
Originally Posted by LTSpeed
The fastest streetable LT1 I've heard of has modified SB2.2 heads. It's easily on par with the fastest streetable LS1's--maybe even faster.
anyone have a link to these heads?? They sound SICK...
Seems the best heads right now beside normal heads being converted are the best Ai heads.
And someone who has converted heads should tell of the process to help out their LTx brethren (spelling i know.. lol)
Originally Posted by Dragframe
ok.. stock for stock.. the LS1 is a better motor to throw on some bolt ons and go. But Think about this. The LSx cars have something like a .497 lift cam (in 98 and 99) and heads that outflow any heads even MADE for the LTx motors (so people say). The LT1 have something like .447 lift cam and inferior heads.
Lets take a LT1 car and comvert normal smallblock heads to work on it. These smallblock heads will flow just the same as the stock LS1 heads. Then, for comparisons sake, lets put a cam in the LT1 that has the identical specs as the LS1 cam. Im willing to say, after doign these two things and making the motoes "even", that the LT1 would take the LS1. If it doesn't beat it it will run side by side (but im sure it will beat it).
So at this point, the only thing the LSx motors have on the LTx motors is weight... but im not afraid of 100 lbs. The LSx f-bodys are supposed to be heavier than the LTx cars anyways.
Any opinions on this?
Lets take a LT1 car and comvert normal smallblock heads to work on it. These smallblock heads will flow just the same as the stock LS1 heads. Then, for comparisons sake, lets put a cam in the LT1 that has the identical specs as the LS1 cam. Im willing to say, after doign these two things and making the motoes "even", that the LT1 would take the LS1. If it doesn't beat it it will run side by side (but im sure it will beat it).
So at this point, the only thing the LSx motors have on the LTx motors is weight... but im not afraid of 100 lbs. The LSx f-bodys are supposed to be heavier than the LTx cars anyways.
Any opinions on this?
Originally Posted by Dragframe
anyone have a link to these heads?? They sound SICK...
Seems the best heads right now beside normal heads being converted are the best Ai heads.
And someone who has converted heads should tell of the process to help out their LTx brethren (spelling i know.. lol)
Seems the best heads right now beside normal heads being converted are the best Ai heads.
And someone who has converted heads should tell of the process to help out their LTx brethren (spelling i know.. lol)
Launching!
Joined: Jun 2004
Posts: 223
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Im kind of sick of the LT1 being known as the "underdog", or "slower than the LS1" but motors have evolved and the LT1 has becomes an "old" engine, but thats not what t is. With todays technology, LT1 heads and cams are becoming more advanced. Ive had heard that LT1 style heads can be converted to 15* vavle angles.
I think many of the LSX owners switch over to iron blocks (LQ9) becuase the iron block can hold the boost or 200-300 shot of gas without twisting like the Aluminum does. And it accepts more honing like somone else said.
I think many of the LSX owners switch over to iron blocks (LQ9) becuase the iron block can hold the boost or 200-300 shot of gas without twisting like the Aluminum does. And it accepts more honing like somone else said.
Launching!
Joined: Sep 2005
Posts: 223
Likes: 1
From: Dayton, Ohio
Originally Posted by METALBEAST
If you were to go with an SBC2.2 head setup, it will cost you ALOT. The machining, special rockers, lifters etc., are gonna add up.
How is it to convert normal smallblock heads to reverse cooling?
and how about some 18* or 15* heads... what would it take to get some to work on the LTx motor.... if we can do that we will be on a level playing field with the LSx motor
and how about some 18* or 15* heads... what would it take to get some to work on the LTx motor.... if we can do that we will be on a level playing field with the LSx motor
Well canted valve heads... i know nothing about.. flow numbers are insane... convert to these somehow... 2.2 intake valves... Flows almost 400 cfm
http://www.brodix.com/Canted%20Valve%20Series.html
Im personaly going with 18* heads that Brodix offers. They claim you can use a standard valvetrain with them and they flow 320 cfm out the box. Just have to convert to rever flow cooling. Im sure no ported stock head will touch the perfomace you coudl get out of these. 2.14 intake valves.. WOW. only $2000
http://www.brodix.com/Canted%20Valve%20Series.html
Im personaly going with 18* heads that Brodix offers. They claim you can use a standard valvetrain with them and they flow 320 cfm out the box. Just have to convert to rever flow cooling. Im sure no ported stock head will touch the perfomace you coudl get out of these. 2.14 intake valves.. WOW. only $2000