Build a 383 for spray, less hp NA but add a 200 shot and bam 600 RWHP is at your command!

 

Hitting 600rwhp on a true 200 shot isn't exactly easy. Figure 360-370rwhp n/a after pulling the timing for the nitrous and your not going to gain enough to hit 600rwhp on a 200 shot.

 

I have a 383 with a 236/245 114lsa
11:5:1 comp stock ported lt1 castings
and will be spraying a 200 shotI dont see why I wouldnt see 600 at the wheels on juice...Its a tnt kit too by the way so its rated at rwhp

Also I should be at 700 rwtq no problem

 

236/245 114 lsa is a very good specs for nitrous.. You definitely should see 600rwhp with 200 wet shot TNT !!

 

I am in the 450-500 rwhp range (560+ ft/lbs.) on just a 100 shot. Its not a wild set up by any means........im only running an LT4 hotcam. I think I could hit pretty close to 600 rwhp with another 100 HP of spray. My motor seems to love the spray.....100HP shot is really like 125-150 at the wheels.

 

So you hit 350-400rwhp without spray?? It seems pretty low for a 383 LT4.

 

hot cam responds good to the juice for some reason I know my numbers wont be too high because of the street twin...dennys ds..and ford 9 but im sure it will do ok at the track

 

I have a 396 built for spray and 600 RWHP with spray is very realistic for me!

 

For one, its only a hotcam in the car....which is nice for driveability, but I could make more power with a more aggressive cam. For two, the timing is retarded N/A for a larger hit on the bottle, which cuts power a bit. Also, it was measured on a Mustang dyno....which is definately a conservative dyno.

 

It was no offense ok? I have a 383ci LT4 long block order (210cc AFR Heads). For that reason I asked for your dyno's number.. Yeah I think its very nice for daily drives.. My car too will be daily ,but I guess I will go with a bigger cam (233-239 lsa4).. I hope it will hit 450rwhp (without nitrous)

 

No offense taken, I hope I didnt come off like I was offended. If I were to build the motor again, I would go with another cam, like one of the popular cc305 or something....450 rwhp is a tall order though!

 

For a 383, I would go one bigger with the CC306. I am running the CC503 grind in my 355, but would step up to a CC306 if I were to up the cubes.

The 503 and 305 are great for basically stock displacement, but neither is big enough for a stroker IMHO.

 

Do you think I would see a huge gain from the cam swap?

 

Well, just have Larry hook you up...My 355 they did 2 summers ago now pulled 400 rwhp with milder cam and RGR heads

 

There's a guy I know in Pflugerville (just outside Austin) running a CC306 in his 385 stroker and he laid down 435 RWHP through the M6 and 10 bolt. Now, he has LT4 heads and intake that flow very well, but I imagine yours are up to snuff to take advantage of that cam(?)

My 355 "would/should" lay down 400 RWHP or damn close, in a M6 car, but it's got an automatic behind it with a SSF3500 that I have never locked on the dyno.

 

TWS... I ran the cc306 in my head/cam 350... and it was at or over 400 rwhp, but it spun to the moon. I wouldnt be suprised if my powerband was over the limits of my internals.

The cc306 (230/244 510/540 112) is a good cam for strokers and even loves the juice, but you have to be careful with that cam on juice. (Nitrous loves added exhaust duration, but hates overlap at low RPM: nitrous backfire)

On the issue of LT1 heads.. LT1 heads are fine on a 355 or budget 383, but take EXTENSIVE work to get to work on a stroker making over 450 rwhp. The cross sectional area of the intake ports just dont provide enough air for a stroker at high RPM, where all the power is at.

You will be better off with a slightly larger port than LT1s can provide. Its basically all in the pushrod pinch. If you want to spin a 383 over 6300 rpm, then you should look into some aftermarket heads.

TWS... 435 seems kinda low for that car. If I remember right, those were AFR LT4 heads too. Im shooting for 430 RWHP outta my motor and I have half the money ino my whole motor than he has in his top end.

 

Can you give a good species of camshaft (duration / lifts) for 210cc AFR LT4 Heads (in a very strong 383ci) with 200 wet shot TNT..

--Cam will be definitely 114 lsa..

(Car is M6 and daily drive)

 

What about 235/245 .585in. , .595ex. LSA 112+4