I was under the impression that California emissions was very stringent, which included a thorough visual inspection? Maybe this question would be better suited to a regional forum.

 

The L92s are huge, but are used in trucks, so at first glance, they won't work with a small cam, but in reality they are doing just that.

Who really knows for sure? I've don't really concern myself with emissions builds regardless..... it's just too much ridiculousness.

Put the dope on the car and call it a day. A 150-shot will pass emissions if you take if off

Mike

 

Procharger. I'd put a Vortech on a Mustang... and that's not saying much.

At least with the Procharger, they are self-contained oiling units.... if you (well, not really a matter of "if", but "when") blow your stock hyperpathetic-pistoned 10.3:1 motor under boost (#7 to be exact), at least you won't grenade your blower as well

Mike

 

always wondered how an ls1 would perform with some ported 72cc heads...like the truck heads...with a supercharger.

compression would go down, flow would be better...would that make for a potent combo?

 

That's exactly what most H/C and boost cars do. They run a 6.0L CNC head to drop the compression ratio to allow more boost.

 

What about the STS turbo kit. It is rear mounted. I believe it uses stock manifolds and internals. Just some extra plumbing from the rear up to the intake. I heard guys were netting around 440rwhp with the set up on an other wise stock car. Not sure if it would make you fail emissions or not though.

 

Ok dont dick around with a blower or turbo, your goals can be very easily met. I have a buddy who wanted his car to sound dead stock so he could street race and win money. His car is a 99 vette, he got ls6 heads that were decently worked,(under a grand in porting) a ls6 intake and a stock 02 zo6 cam. Aside that he has lt's and a ported tb, crank pulley, dyno tune, etc.
It puts down 415rwhp and 396rwtq. Jim at speed inc. was so puzzled when it laid down those numbers and sounded dead stock. You should of saw the look on his face when he was asking what was done to the car. Totally clueless.
If all you want is 400rwhp than build something similar. Good flowing heads and a very small cam. If your looking for something that is 450-475rwhp you need some cubes. a 408, 416, 421, 427, get some afr's or if you have enough cubes l92's or ls7 heads and your good.

 

i still say the AFR 205s and the TSP 224 cam would do nicely

 

The guy in in Cali. so no LT's and cats have to be in the stock location and all parts have to be CARB certified. So, deduct 30-40 hp from the combo you listed. He is still shy of 400hp.

Thats one reason why I discourage HP goals. You're better off building a combination that works well together and let the ETs speak for the strength of the combo.

 

ok im looking at a 01 z28 m6 as the car now. has some miles (110k) but the price may be right (8.5k). seems like 402 is the route to take now. is safe to assume that for 6500 i can afford an iron 403 build? with maybe ported ls6 heads/ and a mild cam? someone set me straight.

 

You could just move out of california and not have this whole headach.

 

Iron 408 is a .030" over LQ9 or LQ4 block with a 4.00" stroke.

You can try that. More cubes will definetly make it more powerful, but having to deal with shorties and things like that really make it a hard build. If you bought some things 2nd hand and did all of the labor yourself, you could do it for $6500... other than that.. probably not. A decent (Eagle) bottom end and pistons is around $3000.

Most stroker motors are around $10-12k when all is said and done, although they can easily top that number depending on what you put into them.

Mike

 

i guess ill just have to wait until it blows and decide what to do. well first i have to buy this car....

 

you can make up in heads what your loosing in shorties and a small cam.
A while back in the lt1 section some guy had a hotcam in a 355. It had stock castings from portpros that flowed 270@600. 395 or 400rwhp 375rwtq, not too bad for a 10yr old cam design and stock castings. It will pass all day. Maybe not in cali but something custom ground in that size would.
Another thing to consider would be going with true duals. It would help out with air flow that your going to need with a 400+ cube motor.
Next, if i were you i wouldnt get a iron block, theres no real need for it. An ls2 block is a grand and will support 408 cubes. Go for l92's and a l76 intake. The complete heads are only 850 from gm and roughly flow 350cfms. Thats going to be hard to beat for the price.