potential race
IMO though it looks to be a drivers race, the lt1 will probably pull out first but depending on the length of the race it should even out and then some.
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From what I know...or think I know,....the LT4 intake won't go on unless he has the heads to.
If this is an LT4 car, trust me, it'll beat the bolt-on LS1.
Your gonna be around the same power if it's an LT1 with cam only.
Just do it...regardless of what it is.

As for the race in general. Everyone who has posted about the lt4 intake not bolting up to the stock heads is correct. So if he does have different heads and a cam, the lt1 will win. If its just a painted version (lt1 intake painted red to look like the lt4 intake), the ls1 is going to win.
And yes LS1's make trmendus grunt down low stock. In fact 90% of the torque is made by a mear 1500rpm. And by 2500rpm (where the LT1 PEAKS) the LS1 is producing significantly more lb ft.
I think you are right about the sensation thing. An LT1 has a big whollop down low, like being slugged in the face. Where as the LS1 keeps up the pace to almost the red line, like some one running into you and just pushing.
More power but porbably less sensation.
Anyhow it also means props to you, as you where evidently out driving them

This is an dyno graph for the LS1 and LS2. Remember this is ENGINE bhp SAE Net and not rwhp. But see how much lowend grunt the LS1 has.
NOTE: the scale on the left (lb ft) is a little odd and makes it look like a steep in cline in torque. But it isn't it's just how this graph displays it.
According to the chart the LS1 is making over 340lb ft by 2500rpm, compared to the PEAK of 325lb ft for the LT1 at 2500rpm.
THX I think he took of WEAK (yes, he knew we were running em) 



