K my friend is in afganistan right now fighting for our country. I am trying to get all the parts for his camaro here and ready for him for when he gets back. I have talked to him about his goals and such for his car.

So far this is what i got
Hes got a 89 RS 305 tbi 5 spd
hes got a 350 4 bolt block ready to be built up.
Hes looking for 350-400 rwhp
he wants to take the supercharged route which is where that leave me a little confused because I have never touched a supercharged car.

What im looking at doing for him is getting his engine ready to build for when he comes home. we have basically a 7000 dollar limit on this build which covers trans, rearend, engine, and basically anything else. Basically im looking for some ideas!

 

gen 3 motor, cam only...and he'll be at those goals, no supercharger needed for that little of HP goals. GREAT fuel mileage, lots of power on tap, and cheaper than tossing that much into that old 4 bolt main engine.

 

he hates fuel injection. definately sticking with carb and super charged gen 1

 

Well, Then he better be ready for 500+ + RWHP. lol
350-400 You can do N/A with any Gen SBC. Easily.

 

well ya i know that

Im gonna let him figure out his finished goal basically im building the bottom end with forged pistons and rods. We planned on using the vortec heads and intake.

What i need help on is what are good cams for supercharged applications and what type of supercharges work well. I know nothing about them!

 

your best bet is to call either cammotion, comp cams , or bullet cams for a cam recommendation.

With a superchager there are few choices. Do you want a roots supercharger sticking out of the hood or do you want a supercharger that fits under the hood like a procharger. The roots offers near instant full boost and work well with carbs but it takes more power to turn compared to a procharger. The procharger boost builds with engine rpm but i would recommend fuel injection with a procharger.

 

well we live in indiana and there in no guarantee that the car will always be covered so I would probably say I would need a procharger type. but i have tried and tried to get him to go to fuel injected and hes a no go for it.

 

Yes, easily but not with that budget. The SC is more cost effective.

 

well the biggest thing is we are making a car club and every member must have boost. I am running turbo 350 tpi hes running sc carb and the other member has a 87 300z turbo. I am gonna start looking around at the different supercharger choices that I have. Im sure there arent too many to choose from and try to see if there are any build logs from people on here.

 

Have you seen the Vortech V-3 Si?? I saw it in Jegs.
Says it capable of suppporting up to 775 HP!!

Part #
933-4GP218-050L $1999.99

 

thank you for the ideas i will look into it!

 

well of course I think he wouldn't like something and he wants to get it. He is more interested in the roots style but we are keeping our mind open to the other types. I really like that vortec setup!

 

I gotta agree with xpndbl3 - he can reach that goal NA with a Gen3 SBC and smack down decent gas milage to boot. Won't require any tweaking either once it's dialed in. And most likely more reliable too.

I think for 7K, if you shop around you could find the engine AND drivetrian.

As far as roots blowers, you always have the Weiand 144, Magnacharger, Whipplecharger etc.... You can probably get the engine rebuilt with a blower friendly cam, forged pistons and run pump gas with 6 pounds of boost to reach that goal. An 850 cfm carb would do the trick, and you would need to boost reference the power valve. I know Demon sells blower carbs with that done already. - But none of the smaller roots blowers will fit without a cowl hood.

 

Please enlighten us on how to get good gas mileage with a Gen3 SBC and making 400 rwhp. It seems GM figured it out and put it in the corvette. Good HP and gas mileage but that engine is going to cost you over 10 grand.
Installing bigger heads and cam in other Gen3 will get the 400 rwhp, but bad gas mileage. So please tell. If he runs that setup with boost it will make all kinds of HP with good MPG.

 

my friend hates fuel injected so that isn''t going to happen with putting the 3rd gen motor in. Only reason I don't want to do that to mine is the fact that I like my camaro unmolested. but I'm looking into the different ones now and going to send him what I've learned about each and let him decide and then I will throw up a parts wanted ad in the forums and craigslist so that I can grab him the parts.

 

junkcltr - Not here to "enlighten" anyone. If you say there's no way it can be done, then that's it.....can't be done.

But if I was resourceful, I wouldn't go buy a brand new 10K vette engine. I would look for a used LS3 or something along those lines from a wrecked car. A 425 or so flywheel HP engine might be a good start. IF you can find one in the budget range. Maybe you can't...

Add headers, some custom tuning later on, and it might be possible to get around the 400 RWHP mark...but - even that might be too expensive. I am pretty amazed at some of the prices I see on Craigslist and ebay on used low mileage newer engines.

-I don't profess to be an expert on everything automotive. Just throwing around ideas. Sorry if that offended you in some way.

 

i do want ur gforce transmission tho

 

lol!! If you search this board on G Force trannys, their as contraversal (sp) as my last post!

 

haha ya i know ive read about all of them but i still want something that can handle more than the stock t-5 without cutting!

 

Your still going to spend money rebuilding a used and abused engine to handle the power. Speed cost money.

 

No doubt....I know that it's far from cheap to go fast - got the t-shirt......I probably wouldn't get an engine that needed to be rebuilt, or had a lot of miles unless I got it real cheap....but I think everyone would agree with that. If you look at the OP, he's only looking for 350-400 RWHP anyway.

The absolute cheapest route to go for him would to use his existing 4 bolt main 350block, and add boost...it shouldn't take a whole lot of boost to get over 400 RWHP....or a nice shot of nitrous. Or both (evil laugh). It'll be a decently dependable street car, but I wouldn't count on it being real easy on gas. Mostly because with the boost he'll have a hard time keeping his foot out of the "go fast" pedal. lol

For instance, I "might" get 10-12 MPG on my 408ish but I never really checked it for sure....on purpose....saving gas wasn't in my build plans anyway..

I still have my original 305 L69 engine on a stand, rebuilt and ready to rock with all the CCC harness etc. -if I want better gas milage.

 

It'll do that....but I would also get the stronger case too if I bought one now. It wasn't available when I got mine. -But it's held well - so far!

 

well to be honest he really doesnt know much about his hp goals. i told him u think 400 or more his response was sounds good to me lol. He is more of the wrenching kinda guy then someone who knows performance.

We are not looking for gas mileage by anymeans. This is more of a weekend car with the occasional drag at the strip.

Im gonna build the engine so it will have room to grow. he just informed me the block is 350 bored 60 over so now that i know that i can start looking for bottom end parts. i think Im gonna go forged everything but crank. just to be on the safe side knowing this guy. Once I get a chance to actually check out these supercharges I should be able to fully decide what I want.

 

http://www.jegs.com/i/Holley/510/0-8...oductId=761118

does anyone know if this carb will work for the vortec v3 set up. says its for roots type blowers

 

If you're considering Vortec,Procharger or Turbo you'll need a "blow-thru" carb which I believe is differently calibrated from a roots type. Something like this: http://www.jegs.com/i/Barry-Grant/13...oductId=762272

There's also other companies that will specially calibrate a carb based on your engine setup. That's probably the best way to go once you have that sorted out.

EDIT: But the custom carbs are a bit more pricey....do a search on the turbos, or blow through carbs on the board and you'll get an idea of what others are using. I have no real experience on turbos or centrifugal blowers myself...

 

thanks that demon carb will work just fine ive always heard great things about demon. So far I think the set up is gonna go vortec heads vortec rpm performer eld intake and that carb with the vortec v3. with a forged bottom end and I will contact comp cams about getting a cam sized for this set up since ive heard they give great advice.

I think we are going to swap a t56 trans into it and I still haven't figured out what we are going to do for the rear end yet but thats going to need some work too obviously. I think with this setup ill easily hit the 400 mark and surpass it if he ever wants to increase the boost.

 

cam only ls1, 26mpg to and from the track with a locked 4200 stall in a 4L60e trans so it could be raced unlocked and ran on the highway with the lockup converter still present. dyno'd 412rwhp on a mustang dyno which is known to be conservative. Runs on 93 octane all day long and drives mostly stock.


Another buddy has a 4400 stall, same lockup setup, trickflow heads and cam, 3150 raceweight, low 10s on motor, knocks down 20+mpg as well. These new motors are incredible 450+rwhp out of heads/cam setups are pretty regular now.

 

i know a few guys who have tried the blow through demon carb and didnt like it. do a search over on the turbo forums. ive started a thread on the vortech v3 kit https://www.thirdgen.org/forums/powe...l-sbc-kit.html . one place that seems to turn out great blow thru carbs is csu. locally there is a 1700 hp nova, a 1000 hp truck and 800 horse stang all blow thru and all use csu carbs. all of them needing some fine tuning but were pretty close straight from csu.

 

big solid roller cam questionable idle ,twin turbo v6 670 rwhp mustang dyno, loose convertor 4500 rpm stall ,th400 , with a full 10 gal cell, 160 mile round trip to track, 4-5 passes at the track. Returned home with about a 1/4 tank of 93 octane gas left in the cell. I was surprised because i thought only the LSx engines ran 20+ mpg .

 

thanks for the info dozer ill look into that ive been watching that thread! what carb were u using on that set up? other than the carb set up sound good for a good setup? I was thinking I could probably go with an lt1 cam also since they can be found cheap and Ive heard good things about their streetability.

 

i still have the tbi.i was gonna send it to a local shop for a tune but now planning on getting some stuff from dynamicefi to tune with. my machinist buddy is gonna build me a new supercharger bracket that will move the supercharger over 2" and down 2".if i were u i would focus on a well rounded package.ive built a 383 sbc that had all the wrong parts. too big of heads low compression and huge cam makes for a turd of a engine that was horrible to drive..then i had a shop build me a 355 with vortec heads 9.5 to 1 compression and a small (.488 lift 222 dur. @.050 )cam.i absolutley loved the 355. it sounded awesome had great response and pulled hard.my point being selecting the right parts that work together will make the ride much more enjoyable.

 

Thanks for intervening a little xpndbl3 - I know it can be done, but there's a lot of nay-sayers I'd rather not get into it with...and since I've never built a LSX engine yet (my next project BTW), I'm still gathering as much info as I can before I start laying down cash for the engine, parts etc..

dozerjoe makes a good point. You'll want to get a good combo of parts that work nicely together. Heads and cam being the most critical, esp. on a centrif. or turbo car since the boost is in the mid to upper rpm ranges where the boost really kicks in, so it needs to breath. Sounds like you have some time to get it together.

I've been hearing a lot about guys having issues with Demon carbs in general with metal shavings, jets missing etc... I've personally had good luck with mine, but I bought mine 5 years ago, and the complaints I've been hearing has been within the last couple of years. I've heard CSU makes a good carb along with Pro-systems (I have one), and there are others. Again. the custom carbs are a bit pricey, but if I were going blow thru, I'd get one.

Good luck with your build!!

 

thanks for the heads up on the demons guys will definately look into that. Does my vortec with lt1 cam combo not sound well? Ive heard people using that setup but it wasnt supercharged so I guess its a diferent situation. I do have time to figure this out but I am also not trying to buy much from jegs or anything unless I have to. Trying to bounce on forums and post wanted ads and see what I can find from members to stay in this budget.