LT1 vs LS1
07-20-2006, 05:27 PM
#2
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No, there isn't.
The LT1s are actually harder to work on, here are a few of my gripes with the LT1
Oil pan is a bitch to mess around with, also the timing chain cover which involves lowering the oil pan.
Intake manifold and valley cover are one piece
Distance between exhaust ports isn't equal, made it a little harder to make LT1 headers.
LT1 oval throttle body required us to get a oval to round elbo piece
Harder to setup aftermarket engine managment, requires pickup wheel and possibly more modifications, for BigStuff3 anyway.
Good things about the lt1
You can get the lifters out without pulling the heads
I like the oil pump a lot better
Pretty much all parts are cheaper, we built a forged LT1 for a fraction of what my forged LS1 cost.
The LT1s are actually harder to work on, here are a few of my gripes with the LT1
Oil pan is a bitch to mess around with, also the timing chain cover which involves lowering the oil pan.
Intake manifold and valley cover are one piece
Distance between exhaust ports isn't equal, made it a little harder to make LT1 headers.
LT1 oval throttle body required us to get a oval to round elbo piece
Harder to setup aftermarket engine managment, requires pickup wheel and possibly more modifications, for BigStuff3 anyway.
Good things about the lt1
You can get the lifters out without pulling the heads
I like the oil pump a lot better
Pretty much all parts are cheaper, we built a forged LT1 for a fraction of what my forged LS1 cost.
07-20-2006, 06:02 PM
#3
Well. . . you'll get both sides on this one. . .
The LT1 has 5 bolts per cylinder, plus they have iron blocks. Big Rick ran 8.0's on a production LT1 block and I don't think anyone has gone that fast on an LS1 block.
The LT1 stock ECM is easier to mess with. For <$200 you can do all the custom programming you want.
Another LT1 advantage is that you can fit a turbo without moving the stock cooling fans, getting rid of any accessories, or running pipes under the k-member.
Round to oval adapters are $75 and readily available.
Mike
The LT1 has 5 bolts per cylinder, plus they have iron blocks. Big Rick ran 8.0's on a production LT1 block and I don't think anyone has gone that fast on an LS1 block.
The LT1 stock ECM is easier to mess with. For <$200 you can do all the custom programming you want.
Another LT1 advantage is that you can fit a turbo without moving the stock cooling fans, getting rid of any accessories, or running pipes under the k-member.
Round to oval adapters are $75 and readily available.
Mike
07-20-2006, 06:06 PM
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Originally Posted by engineermike
Well. . . you'll get both sides on this one. . .
The LT1 has 5 bolts per cylinder, plus most are iron blocks. Big Rick ran 8.0's on a production LT1 block and I don't think anyone has gone that fast on an LS1 block.
The LT1 stock ECM is easier to mess with. For <$200 you can do all the custom programming you want.
Another LT1 advantage is that you can fit a turbo without moving the stock cooling fans, getting rid of any accessories, or running pipes under the k-member.
Round to oval adapters are $75 and readily available.
Mike
The LT1 has 5 bolts per cylinder, plus most are iron blocks. Big Rick ran 8.0's on a production LT1 block and I don't think anyone has gone that fast on an LS1 block.
The LT1 stock ECM is easier to mess with. For <$200 you can do all the custom programming you want.
Another LT1 advantage is that you can fit a turbo without moving the stock cooling fans, getting rid of any accessories, or running pipes under the k-member.
Round to oval adapters are $75 and readily available.
Mike
Yep thats definantly true, our LT1 kit puts the turbo on the drivers side where the AIR pump went and fits great without relocating anything at all. LS1s use this location for alternator and ps pump
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07-20-2006, 06:16 PM
#8
FormerVendor
Yeah, the LS1 is much more advanced/efficient regardless of application. I think it's only disadvantage is 4 head bolts per cylinder.
That, and it was much easier to fit twins down low on my LT1.
As far as tuning, the LS1 computer with 2/3 bar operating system is awesome. IMHO the stock LT1 computer sucks for a boosted application, SD is the only way to fly.
That, and it was much easier to fit twins down low on my LT1.
As far as tuning, the LS1 computer with 2/3 bar operating system is awesome. IMHO the stock LT1 computer sucks for a boosted application, SD is the only way to fly.
07-20-2006, 07:02 PM
#9
Originally Posted by INTMD8
As far as tuning, the LS1 computer with 2/3 bar operating system is awesome. IMHO the stock LT1 computer sucks for a boosted application, SD is the only way to fly.
Just curious. . .
My initial impression from Alvin at PCMForLess is, "don't even try it". Hmmm. . .
Mike
07-22-2006, 06:17 AM
#12
Originally Posted by whynot
93's are chipped though, not eprom, so you would have to have a chip burner, or some other way to get around that.
Mike
07-22-2006, 02:39 PM
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so what all is tuneable on a lt1 ecm?, can you program in a 2 or 3 bar?
because this might be something for me to look into, because I am having a hard time finding anyone willing to burn me a chip.
because this might be something for me to look into, because I am having a hard time finding anyone willing to burn me a chip.
07-22-2006, 02:44 PM
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Originally Posted by whynot
so what all is tuneable on a lt1 ecm?, can you program in a 2 or 3 bar?
It was either that or mail order, and I dont have a Laptop or the adapter plug.
Ohhhh, and very cool name for a thread. I have a feeling its gonna get hot in here.
Originally Posted by engineermike
Well. . . you'll get both sides on this one. . .
The LT1 has 5 bolts per cylinder, plus they have iron blocks. Big Rick ran 8.0's on a production LT1 block and I don't think anyone has gone that fast on an LS1 block.
The LT1 has 5 bolts per cylinder, plus they have iron blocks. Big Rick ran 8.0's on a production LT1 block and I don't think anyone has gone that fast on an LS1 block.
Originally Posted by engineermike
The LT1 stock ECM is easier to mess with. For <$200 you can do all the custom programming you want.
Mike
Mike
07-22-2006, 08:09 PM
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93 lt1 are SD and have a chip,eeprom.The programming is not so hard if you get into it,TunerCat and TurnerPRO RT are good programs
Alvin at PCMforless is very good
Alvin at PCMforless is very good
07-22-2006, 08:13 PM
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Originally Posted by Ari G
93 lt1 are SD and have a chip,eeprom.The programming is not so hard if you get into it,TunerCat and TurnerPRO RT are good programs
Alvin at PCMforless is very good
Alvin at PCMforless is very good
not really, pcmforless won't touch boosted cars
07-22-2006, 11:41 PM
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at least not mine! long story made short, I pissed him off.
He said the only way he would tune mine is in person, on a dyno, so I told him at that price, I might as well get an aftermarket stand alone and tune it my self! (somewhat hopeing he would be willing to help out)
He said the only way he would tune mine is in person, on a dyno, so I told him at that price, I might as well get an aftermarket stand alone and tune it my self! (somewhat hopeing he would be willing to help out)
07-23-2006, 01:22 AM
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Alvin set me up with a base tune for my 93. He did the 2 bar conversion, bigger injectors and more displacement, needless to say its not going to smoothest but that is not his fault. I dont think that ill have a lot to do to the tune once i get everything running properly.