Ok Im looking to build a 383 using the kit in the link below and make somewhere around 350-400+ hp and use around a 100-150 shot of spray. With the way that kit sounds, I should be easily in the 400+hp area, would you agree? That kit should hold up well, shouldnt it? Well, I have no idea what intake/heads/cam to use. Any help is appreciated. Maybe you can help me understand all this so I can decide on my own.

 

What link?

Transmission?
Rear end?
Where do you what the powerband?

 

Good point, I dont know why I didnt think to include all of that.

Im not sure on the rear end. Probably somwhere around 3.73s. Probably stick with the stock 3.08s now until I grenade the rearend. Transmission, I dont know either. if the stock tranny is good enough, I will probably stick with that for a while til it decides to give up then go with the T-56. As for powerband. I will mostly just cruise this car around town, so Im hoping to have some low end, but not all down low. I want it to scream up top, too, but I know I can't have both, so, somewhere in between. If it wont rev past 5500, I wont mind. Of course I want as many as I can get, but if not, oh well. Im looking for Honda revs.

http://www.jegs.com/webapp/wcs/store...0002_752441_-1

 

How much $$$ for heads and intake can you spend? (cam is around 300)

I loved my 383" with the superram but the PITA install just made me sick after a while.........The HSR is a nice option more power up top but alot easer and alot less $$$ then superram.

Read this!
http://www.compcams.com/Community/Ar...?ID=1737510521

or be a pioneer and buy the FIRST intake www.firstinjection.com

/N.

 

Oh you need to think about if you need to keep the EGR..........

 

Im not real sure what heads and intakes go for, but somewhere in the middle of the road. I realize I need to spend money for this project to make it where I want it, and Im not going to skimp. So, just middle of the road price range. I'll have around 7-8k to put into the whole car. Meaning rear end, tranny, motor, some suspension stuff. The paint job will have to hold out a while I guess.

 

Let me start off with saying, this rotating assembly is OVERKILL for 350-400 hp, you can easily get away 400WHP with a cast steel crank, forged i beams and a set of forged pistons. BUT if you're going to start out with that kit and build a whole car around it with only 7k, you deffinately have the wrong idea ESPECIALLY if you're going EFI, the shortblock alone will be around 3 grand after the rotating assembly and machine work to the block. if you still need heads, cam, intake, the nitrous system, gaskets and probably alot of other odds and ends I just dont see it happening with that budget. You'll probably have close to $6k in the engine alone if you do all the assembly yourself. mainly because you would want to put a good set of heads and intake on a built shortblock like that. with the amount of power that motor will make and then the added 100-150 shot of nitrous, the tranny wont last long, nor with the stock 10 bolt, so you're looking at another 1500-2500 in rear end 9" or 12 bolt(depending if you buy new or used) and another 500-2000 on a tranny and clutch/converter depending on the type (manual or auto)and if you buy it new or used. My suggestions for your budget would be this..

355 engine

Forged flat top pistons ( speed pro 9.7:1 CR $265, rings $35)
Forged I-beam rods (eagle 4340 5.7" $260)(bearings $35)
Cast steel crank (eagle cast steel $190)(bearings $35)
Vortec heads (upgraded valve springs, $800/pr)
performer RPM intake (vortec heads $175)
holley 770 stree avenger carb ($360)
comp nitrous HP cam 268/286* ADV DUR, .477/.490" lift (w/ lifters $190)
timing chain (cloyes double roller $70)
roller rockers (crane 1.5, $200)
pushrods (comp cams, $28)
gasket set (felpro $100)
water pump (summit hi flow $60)
oil pump (melling high volume $25)
Distributor (msd HEI $150)
wires (taylor 8mm fitted $45)


That totals $3023 which is about the same amount your shortblock would cost using that high dollar rotating assembly and will still give you the HP you were looking for, using all brand new parts. Figure another 1500 in nitrous kit and accessories, fuel pump, and exhaust. so for 4500 you have a SOLID motor than can make an easy 500+ hp on spray and get decent gas milages depending on gears and stall yet, still leaving you with 3000-3500 for tranny upgrade and rearend up grade

 

Actually, last night after I made this post, I sat back and just started tallying stuff up in my head and realized I was way off base. I actually edited my post telling people to disregard this thread and I was gonna make a new one asking about a 350 instead of a 383. Then I decided to just let it run and see what people had to say.

I would really like to stick with EFI, if I can. Im even contimplating a turbo or blower. Thing is, I want to keep SOME streetablity but when I want to, I can tear ***. With the turbo or blower, the power is always there.

 

EFI + FI = $$$$$$ even if you were keeping the stock motor.... you gotta look at things realistically, a HSR conversion on a TPI car will cost at least $1000 then add in if you have to get a different engine managment (i dont believe the TBI system is capable of running a boosted SBC) thats another 3-500 if you stick with a stock TPI SD harness and computer, then the tuning to get it running good, then add either super or turbochargers into the mix and you're talking about another $3000-$6000. You're best bet for your budget is to make a stout sbc (like the one i spec'd out) and throw a nitrous kit on for the "just in case" or the occasional trip to the track. then you have the rest of the money to throw into a rear and tranny that can handle the power. I've started to go turbo and the efi route, but realizing the cost involved i just new i couldnt afford to make the car how i wanted in a timely manner. in other words i didnt want a 3-4 year project before it was even worthy of driving.

 

Thanks man. You've set me straight on what I want to do now. How much N/A HP do you think that will make? Any rough idea what it would do in the 1/4?

Thanks for all the help so far!

 

that will make and easy 410-430 hp NA and then add 125 shot of nitrous on top and you got aroudn 550 HP, plenty enough to take down the streets. with a decent stall, some taller gears, sticky tires and some minor suspension, if your car weights around 3500 i could see it go low-mid 12's @110-112mph and on spray, low to mid 11's @ 118-120 with good traction

 

If you don't run at the track that often, then you could probably get away with the stock rear with some gears and drag radials leaving soft(off idle).

Your biggest expense being you are a manual tranny is going to be the driveline. Tranny and rear are going to need to be addressed first.

The 355 spec'd above will work just fine. You could re-pin your existing harness and run the 730 sd ecm with the new motor and just go to the 749 ecm when you want to add boost later. You can find used stealthram intakes on the classifieds for around 500, and 30lb injectors for 150, plus fuel pump-150 and ecm-50 and chip-50, cable-50(assuming you have a laptop).

 

I have heard stories of rear ends and trannys locking up when they go, that would not be good. It could end up costing you more in damage or some damage to yourself.