MyNameIsMud

I drive a 91 z 5.7 350.. and i want to start looking into the 383 swap. where do you get it? how much is it? what all does it come with? and what kind of horse power is it pushin out the crate

Randy92Z

Id guess that really depends on what you want to do with your Z. If you were to just slap a 383 under your stock style TPI, you'd pick up a few horsepower and alot more torque, but Id think you be left wanting more. How much money do you have to budget? If you only had enough to build up the 383 short block, and nothing left over for heads, cam, intake and exhaust, you have the example of what I just mentioned above. If you had some money left over for heads, cam, intake and exhaust, then you'd have the best of both worlds. Your stock heads and intake are gonna severly choke up the 383, so your power gains would be not what you'd be expecting. Give us some more info on what you have to spend and what your car has now.

ringo234

Check out this site: http://www.online-racer.com/chevy_383_stroker.htm

MyNameIsMud

now ringo if i was to get this what else would i really need... as of right now i have hooker super comp LTs with no cats and magnaflow exhaust. i have an edlebrock intake manifold with as&m runners and a ram air intake. i also have a fast chip and 52mm TB. the rest of the stuff for the car to run right could i use the stock things? and with the step up in HP i would need a better fuel delivery system correct?

byrons1502

i would build your own. get a newer tbi 350(roller cam would rock) and use a similar setup but get better heads all that said was cleaned up with new springs. i would use a tpis or comp cam. get a decent set of heads. i like building my own engine because i like the choices available. you can build a decent 383 for around 2000-3000 depending on how far you wanted to go.
whatever you do make sure it has good pistons(hyperutectic at least)arp bolts(recommend wave loc), crank is not that important unless you want 500 hp or more, balance it no matter what (even if the guy says it is externally balanced by the flywheel and balancer(don't laugh i have seen it) if you are not sure by a 383 kit already balanced or go one step further by buying a short block that is done. you don't need to pay extra for an assembled engine with timing covers and oil pan because you have one on your engine.

as for what else you would need would be new injectors(especially if you have 19lb 305 injectors) new computer program for the fuel requirements. other than that not a lot else. it would not hurt to upgrade the fuel system to a larger pump and adjustable fp regulator.

number one thing is a good camshaft not one of thier comes with it specials, most of them are cheap and very soft. don't forget to use rotella t or a break in additive when you start the engine for the first time. good luck and don't be afraid to ask a lot of questions

MyNameIsMud

so if i was to go along with the link above the 383 stroker i would still wanna put better heads and camshaft you think? i mean i want power you know and im willing to pay to build a quaility 383

Randy92Z

Check around your area for your local machine shop. Most of them will assemble your short block assy for you. When I did my 383, $700 for the kit and another $200 for the shop to assemble it for me. they did all the clearancing and machining. When I picked it up, all I had to do was put the heads, cam and intake on. Very reasonable prices, best thing about it was the machine shop can do exactly what you want. shopping for crate motors gives you only so many options.

MyNameIsMud

I think that in my situation i want to buy the whole set up being that i dont have the time or the money to build an engine seperately when i can have it done and in you know.. i feel like if i bought the 383 from the link above it would be a huge improvement. plus all the things i have now with the 383 would be amazing. 350 HP out of the crate with an exhaust, headers, intake, intake manifold, runners, chip and TB seems like that would be enough to at least be close to my goals... my goals for this car are 500HP with a 16% drivetrain loss (which may be high or low not sure) would give me 420 to the wheels. So this crated motor running 350 i have 150 to go... what do you guys think

MyNameIsMud

also i need to add my money situation i have about 3000 grand i can spend for this swap, this is motor, heads, cam which the package above has for 2300 also they off 1.6 roller rockers for another couple hundred is it worth it knowing my goals in HP? i know this is alot of questions but im trying to know everything about this... thanks in advance

2000GTP

Yes, rockers would be a good idea as well. After that and shipping, that will take up most of your budget. The remainder will most likely be needed for the odds and ends that come up during a project like that. After that, a shot of nitrous would be the easy and cost effective way to hit your goal of 500hp at the crank.

MyNameIsMud

do you think i could hit 500 with my 383 and as follows: Hooker super comp LT headers,3" magnaflow true dual exhaust no cats, edelbrock intake manifold, as&m runners, good intake and a fast chip?? thanks in advance

2000GTP

No, you would need a decent sized cam and some aggressively ported heads to hit your goal.