I agree an eleventy brazillian percent. I'm getting quite sick of hearing that boost is just a measure of restriction. An engine is not an orifice and can not be modeled as one!!!

 

also i was thinking if i were to build a 383 with nitrous how reliable would that be to be spraying a couple times a night as in just having the blower on the 355 wouldnt be as bad? or could a fully forged motor handle a 150 shot a couple times a night or even something bigger 200 250 300

 

I believe that any time you get over a 125 shot of nitrous or 6 psi boost, things get an order of magnitude less reliable.

Mike

 

I figure boost would be safer then spraying that much nitrous in one nite. and going out quite a bit to spray it a week.

 

alright so a nice 355 with a blower sounds good then ive been reading alot and is it true if i have a nice set of pistons and rods that the crank i can leave? that would save alot of money or would you suggest running the crank too

 

It really depends on how much boost you plan to run. Most seem to say the stock crank is good to around 600hp, but if your shooting for 800hp you would defintely want to upgrade to a forged piece. (Along with every other aspect of the motor as well )

 

A fully forged motor could take a 300 shot just as easy as taking 20+#'s of boost. Its more a question of money spent rather than power. If you want a 600+ RWHP car cheepest well built, I would reccomend building a bullet proof 355 and spraying it. Parts will be cheeper, and you will still be able to make the power you are looking for. Having a built motor holding up to boost and or juice as all about the components you build it with, and making sure you don't run it lean. Neither one is harder on the motor that is built than the other.

Building a 355 fully forged motor and a killer N20 kit $7,000
Building a 383 fully forged and a good Supercharger setup $14,000 +

(Niether is including everything else you need done to your car to handle the power)

BTW, I wouldn't say with even 650 RWHP you'll be able to spank everything in North Jersey. My car this year should easily attain that HP level, and I know of SEVERAL others in Jersey that would take me down like I was in reverse! To the barely or slightly modded, you would win no contest, however meet up with the highly modded guys, and you'd better be running a low 10 or faster to keep up.

 

that sounds good too and btw it was more a joke about spanking everything in north jersey but it'll be really nice knowing that if i roll up next to an sti or an evo it shouldnt be a problem

 

Most ricers don't have a prayer to even a bolt on 4th Gen. However, you'll always have some Supra TT's, or a higly modded Porsche that will give you a run for your money.

Again, most anything out there you can probably spank with a 600 RWHP car. It's that last 5%, that care as much as you do, and have the highly modded stuff that you really have to worry about.

 

what kind of internals would you suggest for the 355

 

Any good speed shop will be able to give you a good run down of what the better internals to run are better than I could.

I went with all HIGH dollar stuff in my motor. But I also spent over $12,000 on the motor this last year AFTER I had already bought the 383 new for $8,000! I may have one of the more expensive motors out there, but I know my motor could take 25+#'s of boost just fine and just smile for more.

 

does compression play a part with nitrous or its all the same with spray and fuel delivery what kind of psi to need to be running

 

No, CR makes a difference. Although you are more likely to get away with spraying with a high CR when compared to running boost with high CR. If you spray with a higher CR, you can just get a timing control module and retard the timing so you can safely spray.

Either way, you are better off getting a lower CR though, for both boosted and N20 applications. If you want reliablity, you'll need to build a motor and get forged pistons anyway. You might as well just get some low CR ones while you're at it.

 

OPies57,
I don't me to hi-jack the thread, but I have a pro-built fully forged supercharged 383 small block for sell that was in my 91 Z28. I sold the car as a roller and kept the motor. It has very low miles and needs to be sold because I have no use for it anymore. The engine is complete from supercharger to oil pan. I can save you a lot of money on a motor of this caliber.

730hp/ 700lb.trq on 100 octane with 9lbs. of boost (Vortech T-trim). With a Cola 4340 crank, Manley 4340 H-beam rods, JE pistons and ARP hardware this motor can handle more for sure. I do have all reciepts and spent around $12,000-$13,000 roughly, I will let it go for a whole lot less.

PM me for more details, build sheet and picture.

Thanks,
Dan

 

who retails diamond pistons i looked at there catalog i want the nitrous pistons