black01gt

BS my @$$ i had an auto and he is auto. After driving both auto and manual now i dont feel much difference

SilverBullet5.0

What does it matter if theyre another GM 350? (the LS1 is actually 346)

The bottom line is they are superior, regardless of how they make the power.

jlauth

How do you feel that they are superior? Superior in engineering, power, or maybe efficency, well i feel that all are false. The LS1 is a great motor which makes more power than a NA 4.6, but superior no. Lets take the Mach 1 VS say a camaro ss or ws6, Mach is 305/320 vs 325/340 doesnt sound very superior considering the mach makes that power with a DOHC 281ci 4.6. I found that 325hp/346ci= .939 hp per ci where as a mach or my car makes 1.08 hp per ci. I like and respect all GM cars and especially camaros and TA's, but to call the LS1 superior to a 4.6 DOHC no, maybe an SOHC motor but that is still a close call.

JD1969

This is an old argument but here goes. The LS1 has 15 degree cathedrel port heads, this is straight up race car stuff, the heads flow about the same as the DOHC 4.6 Mach1 engine but with only 2 valves per cylender. Yea the 4.6 is smaller but it also has either 2 or 4 cams. The 4.6 heads do not flow well because of how the intake runners are shaped, this is why they like blowers so much. A forced induction does wonders for poor flowing heads.

SilverBullet5.0

Ok, i say again:

You CAN NOT get 300 rwhp from a 4.6 with bolt ons.

You CAN get 360rwhp from bolt ons with an LS1.

So, therefore, the LS1 is more powerful. Therefore, in the worl of racing, makes it superior. Would you like to argue a blatant fact to me again?

jlauth

i believe that you could easily get 300 rwhp with a full bolt on 4.6 dohc, like i said my car has 90k and was running with the check engine light and put down 330/345 at the fly, which is like 282 with 15% loss. I have no pullies no headers no tune, also machs tend to make more power than my car. I would also like to know what you consider bolt ons Cam, heads, porting. I have read in MM&FF that a 96 cobra with a cam swap made like 340-350 rwhp. I am not trying to start a argument here, but no engine is perfect or superior in every way the LS1 does have some superior properties (which was brought to my attention by JD), but the 4.6 also has superior properties. Nither engine is entirely superior to the other.

tripsevn7

j, i wouldnt put to much into what our resident gmfanboy says you know the one who's name reminds me of my girls favorite toy, as all he is able to post is general rhetoric. if you want to get any info on ls based vehicles i suggest you listen to jd, tommy, lee, or sidewayz.

TommyV8

The power-per-liter argument is for ricers. It's all about power-to-weight.

SilverBullet5.0

And how much does a cam swap to an LS1 net to the wheels? anwhere from 390-415rwhp.

Oh look, still better.

I fail to see how you think a 4.6 DOHC motor is on par with an LS1. Like, its a ****ing BLATANT FACT that LS1's make more power mod for mod.

THAT IS SUPERIORITY.

The only motor i see superior to the LS1 is the 03/04 cobra motor. Its made for boost, and can ahndle a ****LOAD of power. So therefore, its superior to the LS1 IMO. Regardless of the fact that an LS1 with a blower could potentially make more power, it doesnt have the strong internals to do so. And when you go and switch internals, its not even the same motor anymore.

and tripsevn7, do me a favor and get off my nuts. I have more automotive knowledge in my head now than you will have in your life. I dont post bull****, i post facts. You asked me to stop doing certain things and i did, so chill the **** out.

black01gt

Stock Mach1's run the same as stock ss's. mid 13's to high 13's, but i do agree LS1 is a good motor and gm put alot of time into it. I think its a good match for the same class as and LS1 and DOHC 4.6. LT1 same class as SOHC 4.6.