Hey guys, can someone give me some insight on this? I went to houston last weekend and helped some guys with a motor swap on a TA. It had a lq4 w/ a vortech supercharger running a 125-150 shot. The motor didnt hold up... He got another lq4 shortblock and swapped everything over to it, instead of keeping the 317s on it he swapped on some ''pavlock'' 241 heads. He said he wanted higher compression and with boost it should make more power.
Keep in mind its the stock bottom end with a good amount of boost. Hes trying to get 600 to the wheels w/ 241s, since he got 567 with the 317s and no juice. So everything ive ever read has been '' high compression + boost =" Now knowing this the tuner really dosent want to tune it, because he dosent want to be at fault when this thing does decide to let loose.

1. is 600 to the wheels achievable w/out nitrous?
2. How long will this setup last before it spills its guts?

Thanks guys, this may help solve a huge dispute.

 

Its definetly possible if he runs meth. but hes asking for problems if he doesnt.

 

600rwhp is very attainable,and ive seen some high compression+boost setups,are the 241 heads ported or anything,because im pretty sure they dont flow as good as the 317s

 

Nope no meth or plans for it.

The heads are ported, but they dont look all that professional. I was thinking the 317s would make more power and be safer for a boosted setup.

 

iive heard of people running high compression with turbos. they do biggg turbo and have a nice strong motor to get it going then let the spool carry it. but its a good idea for traction.. hook 400 wheel then let the big timer spool up and and goneeeee lol.

 

High compression and high boost do make the best power since you get a very high cylinder pressure. Take any modern turbo diesel for instance, ~18:1 CR with 30 lbs of boost = crazy torque.

The problem is this combination is extremely hard on the engine, especially the bottom end, but if you can get it to work, awesome.

 

Our main concern was the stock bottom end. I agree it would make some crazy power but w/out forged components i didnt see it staying together long.

 

There is a reason diesel engines are nearly twice as heavy as equivalent displacement gas engines.

 

no kidding, they are definetly stout.

 

lose the 241s. ported or not. take the 317s and have them ported. if he is that close, would try that with maybe more cam or boost. and at least switch to e85 for that comfort zone. not sure how much longer it will last like it is without forged pistons and arp main bolts, at least. good job on pushing it that far, just a little more to go. lol