Im into it.

jdrumstik · 03-16-2004, 07:44 PM

I've been into early 90 fox bodies and F bodies for a long time, but it seems that if you hang around hte mustang forums, they are alwasy talking about all these mods to keep up with a stock LT1 camaro, the LT1! a truck engine, this isn't even talking bout the LS1!

so now Im a believer. I really want an early 90s camaro. so im into it, cause the camaros seem to cost a little bit more, but on the other hand, they make a hell of a lot more stock pwoer and you don't reach a bolt on preformance peak of like 300hp like you do with the stangs.

89IROC&RS · 03-16-2004, 09:08 PM

um, what truck was the LT1 ever in????????? but yeah, first year of the LT1 was 93, 90-92 was a TPI engine, also pretty bad ass, and also the one most commonly referred to as the truck engine, cuz of the low end torque and lack of top end power. well, when left stock anyway.

Genopsyde · 03-16-2004, 09:51 PM

LT1 is a Vette engine

89IROC&RS · 03-16-2004, 09:59 PM

and a camaro engine, and a caprice engine,

Chevyracincamaro · 03-16-2004, 10:02 PM

and then we can get into the LT4 which had its moments, quite a many of them as i recall...

Genopsyde · 03-16-2004, 10:06 PM

it was in the vette before anything tho, that's why i said that.

94Camaro3.4 · 03-16-2004, 10:10 PM

Welcome to the badass CAMARO! When I was looking for a car, it was always the stang. Then I realized that a Camaro is the way to go. Also, being in highschool, everyone has a mustang, it is just becoming to overused. I got the Camaro and love it!! (I can't say to many bad things about the mustang, I still enjoy them.)

caw333 · 03-16-2004, 10:18 PM

The 350 TPI is also a vette engine.

jdrumstik · 03-17-2004, 01:20 PM

I was under the impression that the LT1 was just chevy's modern 350 tht they used in practically everything for the V-8 version, but I guess not.

89IROC&RS · 03-17-2004, 10:36 PM

thats the LS1, as far as the modern 350 thats in everything, but the LS1 based engines in the trucks are atually 4.8, 5.3, and 6.0L, and 8.1L, but the last one is a different animal. the 5.7L LS1 is only in the vette and F-bodies.

FormulaLT1 · 03-17-2004, 11:57 PM

The LS1 is 346 Cubic inches not 350 but it is still 5.7 and if your going to get a F-body (Camaro or Firebird) with the LT1 get a 94 -97 instead of the 93 which is the first year it was available in the Camaro. The 94+ plus models have larger injectors and Mass Air instead of speed density (which doesn't react that great to mods). Different computer and if you get a Auto the 94 + have the better 4L60-E which replaced the 4L60 which is basically the same tranny but the 4l60-e is computer controlled for optimum performace. If you check the stat's on performance you will see a pretty big drop in the 0-60 and 1/4 from 93 to 94

89IROC&RS · 03-18-2004, 07:37 AM

lol, well yeah the LS1 is a bit smaller, but its still the 350 as far as the world is concerned

kinda the same deal with the 396 big blocks in the 70s, they were actually 402ci.

oh and i would argue that if you have the ability to program your own fuel and spark curves in the computer, Speed density is the superior system, its just that without reprograming, you are correct, it dosnt like big changes. the MAF system by actually measuring the ammount of air coming in, can easily adapt to most changes, but even that system will need to have its programming changed at a certain point. the speed density cant do that, because all of its variables are pre-programed baised off engine RPMs, so say a stock engine flows 600cfm at 3000rpm, the computer will know that, use enough spark, and enough fuel for optimum performance, however throw in a cam, and free up the intake and exhaust, now your flowing say... 900cfm at 3000rpm, now the computer is relying on the O2 sensor to inform it that its not putting in enough fuel causing a lean condition, and then it adds fuel, but has to alter the spark because of the knock sensor telling it its wrong, and it changes baised on that, and its a big game of catch up, which hurts performance. the MAF sensor does alll of this instantly, however it also provides a massive blockage in the intake track. and still only follows the factory settings for the optimum balance of hp, gas mileage, emissions, and such. with a Speed Density system, you can program every variable, create the fuel and spark curves, and tune it all for optimum performance, at every RPM in the powerband. I myself am going to be changing the TPI in my IROC over from MAF to Speed Density because of these benifits.

FormulaLT1 · 03-18-2004, 12:46 PM

OK I understand what your saying but MAF system's can be programmed to adapt to all kind of changes as well but even with factory setting adapt very well to mods. as shown in the 5.0 Mustangs that where produced from 89 -93 and the LT1 94-97.

Hypsi87 · 03-18-2004, 03:42 PM

Quote:

Originally Posted by 89IROC&RS

lol, well yeah the LS1 is a bit smaller, but its still the 350 as far as the world is concerned

kinda the same deal with the 396 big blocks in the 70s, they were actually 402ci.

oh and i would argue that if you have the ability to program your own fuel and spark curves in the computer, Speed density is the superior system, its just that without reprograming, you are correct, it dosnt like big changes. the MAF system by actually measuring the ammount of air coming in, can easily adapt to most changes, but even that system will need to have its programming changed at a certain point. the speed density cant do that, because all of its variables are pre-programed baised off engine RPMs, so say a stock engine flows 600cfm at 3000rpm, the computer will know that, use enough spark, and enough fuel for optimum performance, however throw in a cam, and free up the intake and exhaust, now your flowing say... 900cfm at 3000rpm, now the computer is relying on the O2 sensor to inform it that its not putting in enough fuel causing a lean condition, and then it adds fuel, but has to alter the spark because of the knock sensor telling it its wrong, and it changes baised on that, and its a big game of catch up, which hurts performance. the MAF sensor does alll of this instantly, however it also provides a massive blockage in the intake track. and still only follows the factory settings for the optimum balance of hp, gas mileage, emissions, and such. with a Speed Density system, you can program every variable, create the fuel and spark curves, and tune it all for optimum performance, at every RPM in the powerband. I myself am going to be changing the TPI in my IROC over from MAF to Speed Density because of these benifits.

that is why all of your F.A.S.T. systems and Digital Fuel Injection systems (DFI) are all speed density

89IROC&RS · 03-18-2004, 08:27 PM

well yeah, id say if you are going to be making a street cruizer, and the only mods from stock will be some port work, or even new heads, a K&N filter, exhaust, intake, and such, maybe a small cam, MAF would be the easy way for the average guy to do it, because it automaticly adapts to the changes you made. But if you do much more than that, it is worth the benifits to go speed density in order to maximize the more in depth modifications.

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