Some people opinions are if you want an LSx motor then sell the C4, and buy a C5. I am of that opinion as well.

We all have opnions, and thats what makes the world of round and round.

The saving weight of an aluminum block is ***** all. It would be more efficient to loose it off your gut.

For me when I see a nice C4 and an LSx stuffed in, I think it's ok. For me it reminds me of a C5 actually with the plastic intake. Now open a hood of a C4 and see a nice polished superram, or a 434 with a miniram on top. Now we are talking!!!!!!!!!!!

 

Forget all about the weight issue. It's a none issue when you think about it. If you want weight savings slap on a set of o.e. C5 Z06 rims.

 

True, but consider the real cost of redoing everything "right".

For me, $7k included the shortblock, machine work, rotating assm, heads, rockers, gaskets, fasteners, lifters, push rods, heat sheilding, water pump, intake, TB, injectors, tuning equipment, exhaust, headers, polishing/porting tools, fabrication costs, hoses, fluids, sensors, DMF, clutch, CHS , u-joints, seals, FSM, paint, cleaners, alt rebuild, etc.....

There's a LOT of stuff to consider if you're going to be ready for the extra power (and start with all new stuff). Some things are more that you'd expect too. Fasteners is the best example of that. I may have spent almost $1000 on fasteners, sensors, and gaskets alone!

Also, $1500 of that was DMF, clutch, and hydraulics.

Also, I'm doing my own work -- trading my old 55k motor for a helper and his hoist/stand. That even ended up costing me because he ran the hoist along the side of my car. Now, I need my lower passenger door reshot. (I should have sold the motor outright and rented the equipment.)

I started off seeing what I could do with $2500, then $4000. I hoped and hoped it wouldn't go much over $5k, but ended up around $7k. But, I went from headers/intake to a full-blown redo. (Compulsion got the better of me!)

 

For people REALLY considering weight, it will go way beyond something simple like that.

 

Wait til I put a polished magnacharger on my LS2.

 

Nonsense. (Unless of course, as I mentioned earlier, that you're a one dimensional driver and only care about speed in a straight line.)

 

No. I plan on road racing this car. My car weighed in at 3230 before the 421. I will weigh at after when she gets tuned.

I like to corner, brake, straight line etc...

Unless your totally strip your car for roadracing, then 40 pounds or so wont make a difference, and you wont feel it.

 

And a polished magnacharger is having me wait, why?

 

Seems that this LS-craze affects all models from C1 to C4 nowadays. Why not get a C5 from the start?

 

Greg.

99% of us drive out cars on the street, and take them to the track to road race or down the 1320 (once in a while). An aluminum block is going to do what over a cast block? The C4's are balanced with an iron block from the factory, not an aluminum one.

Plus I will go what 0.03 secs faster in the 1/4 mile?

 

Your looking for Bling factor and a polished Maggie looks alot like the intakes you are saying.

 

Balanced means nothing. Look at a formula car or a sports prototype car. Do they strive for 50/50 "balanced" weight? No. Why? Because it's not the fastest way around a track. Light weight trumps "balanced", and actually, rear weight bias aids in acceleration and braking.

I'm not into quarter mile stuff, but I'd be interested in hearing from you after your weekend at the track if you lost out in the finals by 0.02 seconds. I'll bet then you would wish you had that 0.03 in your pocket to redeem.

My thing is road course stuff. An average track is about two miles long (Eight times the length of a drag strip). What is eight times .03 seconds? That would be .24 seconds. After a ten lap session, you've got 2.4 seconds in the bank. At a lap average of, let's say, 65 mph, we've gained about 14 car lengths over the guy behind you. I'll take that. And the best part, it's all free.

These are all just easy numbers to do math with, but physics says that a lighter car will accelerate quicker than a a heavier car, given the same engine power.

 

Above all else I got to see that one going.

Make a loan now

 

iv heard from many that the ls swap saves about 100 pounds over the iron block. thats a good amount of weight

 

My Bank loves me...... Ill be buying it in October. I got to buy the toledo cowl hood soon. Basically I got to drop another 10 grand in to be finished.

 

When done, your going to have one super fast and nice ride!

 

very pretty. why 10 grand?

 

Most of these guys with LSx in there C4's arent touching a road course. To each there own.

Take it easy.

 

You're car is unusually light (to me). Maybe I just don't have experience with weighing too many c4's?

On the other hand a ton of stuff from the engine bay was removed, right (i.e. AC, emissions components not related to the Lsx, etc.)?

 

that's about what it would run to get the kit installed.