Just some more random thoughts.

a. Stock for stock, LT4's and LS1's run high 12's-low 13's- how is that ownage?
b. LT1's have limited resources, therefore are expensive to build.
c. LS1's have even more limited resources, plus the blocks can't take a lot of power- and also expensive to build.

My question is- why spend a ton of money on doing a stock, or near stock motor swap? Is it for the prestige of having something you don't currently have? Isn't the point of swapping motors to go faster?

I still stand by a carb'd SBC with any number of Aftermarket, (NON-GM) heads.

You'll go faster, spend less, and be much happier.

 

Not good enough. Looking to try out the new HSR with 42# injectors and a totaly different cam, 1.6RR intake and 1.5RR exhaust with a 3800 stall Vigalente. In mid 12s now but hoping for less with the new setup.

 

That was my question too. Like I said, some pros have told me that fully massaged, an LT1 will make about 20HP more than an L98 that has been worked on to the same specs. However, if we were racing for money, I'd go with the LT1 because that 20HP might get me the win. Since most of us are not, that is why I said to stick with the L98 and massage it to the max. That would be easier than shoehorning in an LT1 and gaining 20HP max.

That is why I ahve stated that it is too much work for too little gain.

 

What pro told you that?!?! I'd run like hell from that shop!!
Think about it, a motor is a motor. Heads are heads. Ports are ports, etc...

If LT1's made more power than other engines with the same specs- don't you think there'd be more LT1's in the high horse, class registered race cars?

I can't agree with you more Aklim- too much work, not enough gain.

S.

 

I believe it was LPE and a few others in that range that said that if you max out the LT1 and do the same with the L98 that the power difference was probably slightly more (20HP more) with the LT1 because it is reverse cooled (a tad higher compression) and does not have a distributor to drag it down but 20-30HP was all you could get out of it, if that. That was why they said that it wasn't worth the work unless you had to have that 20HP and even trying to get that difference would be pushing it.