supermaxxbasher

WOuld a xe274 cam, edelbrock performer Rpm intake, edelbrock 750cfm carb, and some 1-5/8" hooker headers get me there. Now this is on a 8.5:1 compression engine with stock 882 heads. I don't have the money to add a set of heads and all I really want is alittle of 300hp.

five7kid

iTrader: (14)

Doubtful.

kfoley

I would have to agree, with anemic compression and smog heads it'd be hard.

88 WS6 TransAm GTA

iTrader: (1)

With that low compression, about the only thing that will work out good for you would be nitrous. I would say a supercharger, but if you cant afford heads, then a s/c is totally out of the question. Look into the NOS 5150 kit... reasonably priced and will get you the power your looking for.

F-BIRD'88

Surely you can get a hold of some old 305 heads to throw on that smog slug to give it some compression.

dans82bird

I agree with F-Bird, I read someone saying that those 882 heads are only worth what the metal recycler gives you for them, lol. Some 416's should bump the compression up nice... but without porting its still not going to breathe that well.

supermaxxbasher

Ok so what if I did add a set of vortec heads with 64cc combustion chambers where would that leave me power wise and compression wise.

kfoley

I'm assuming the 882's have a 72cc chamber. That would make -9cc dish pistons. With 64cc chambers and a std .041 composition head gasket you're looking at 9.3 or with a .015 steel shim gasket 9.8.

supermaxxbasher

the 882's have 76cc chambers.

kfoley

Ok, the compression will be a bit higher then. With 64cc chambers, .041" gasket and std deck height, -6cc dished piston it'll be 9.57:1. A .021" gasket will put you at 10:1.

supermaxxbasher

cool. I don't really want a big horsepower engine. Just enough so i can have some serious fun with destroying my entire drivetrain.

kfoley

If you use vortecs and the cam/intake package you talked about above you have about 400hp. You'll have plenty of fun with that..

StealthElephant

274 seems like alot of cam for a mild build, you might be better suited to a xe268 with a 9.5:1 CR, that would be very streetable and you wouldn't suffer from timing restraints. That alone should get you 300HP assuming you can get the air in.

Hype

That cam is way too big for those crappy heads, I know because I have them.

The XE262 is as big as I'd go, hell, I'd bet you'd make the same amount of power with the XE256 even.

With my setup I run even with stock T56 LT1's, yeah they're not the fastest cars on the road, but for the extreme low budget build I pulled its fine.

Here's a link:

https://www.thirdgen.org/techbb2/sho...t=build+please

Uhhh I hope that posts ok.

Anyway, I followed RB83L69's plan down there on the bottom, the only thing I did differently was stay with the good 'ol Qjet, seeing as how its not computer controlled. I've gotta be puttin down at least 300 at the crank.

Later.

supermaxxbasher

thanks guys

Need4Speed1387

how would an engine with the vortec's, performer RPM, 650cfm carb, XE268, and 1.6 roller rockers do horsepower-wise?

kfoley

Probably around 380 hp.

86budgetSC

I had a stock 350 shortblock.


It had a lunati bracket master cam with .458 lift,218 duration @ .050 on a 110lsa.It also had a performer RPM intake with a 1406 carb.A set a hedman 1 5/8 full lenght headers into 2.5 inch dual exhaust.The heads where stock 462624 castings.


Desktop dyno says it had around 285 horse and 360 foot pounds.Now this was in a 69 chevy truck not a thirdgen.It had a 3 speed manual trans with 3:73's.



I definitly had alot of fun with that motor.I beat a TPI305 IROC by 2 car lenghts.I am thinking it ran in the mid 15's.I also beat a new HEMI ram.That made my week.Everytime I see one of those ads I laugh.My 2000 dollar truck was able to beat him.I beat him good to.

supermaxxbasher

Well today I shipped my engine to be rebuilt with 9:1 compression with 76cc chambers...I know can't run vortecs because the compression will be way to high...SO now I am looking into a set of Pro lightning 200cc cast iron heads with 72cc chambers instead..Seeing as how my setup has a higher compression now how would that 274* extreme energy cam work with 1.6r Magnam roller tip rockers with those heads..Everything else will stay the same the edelbrock rpm intake, holley 700cfm DP, and hedman long tube headers into 2.5" true duals....I am set on doing a major engine build cause the new rebuild includes forged pistons and a cast steel crank... SO I am curious what kind of power this thing will be able to put out...and now that I have a better job I can afford to start doing this engine build..Do you guys think I should go with the 180cc or 200cc heads or is there much of difference..

kfoley

I'd go with the 200cc runners.

That combo is good for about 420hp properly tuned...

ME Leigh

I'd go wiht 64c chambers, with a xe274 and 10.0:1 compression will be just about perfect.

rjmcgee

With flat tops and a non decked block my comp ratio is about 9.5 to 1. I have the 200 cc heads and the 1:6 rockers that you mentioned. Pretty much be the same engine I put together. It is very streetable and very mild. Will putt around town with no complaints. I have a crappy Edelbrock 600 carb and stock exhaust manifold and I- pipe. I built the engine with no internal restrictions but didn't have the $$'s to do the carb and exhaust. But that is what this winter is for. With those restrictions I still managed a very traction limiting 14.05 at 99.7 this fall. So the power is in there just need to finish what I started. I probably have more than a second left in it with posi, carb, and exhaust. Hope this helps you some and good luck with the build up.

supermaxxbasher

..

supermaxxbasher

Hey RJMCGEE,

Do you have the K1 kit for those heads and if so do the 1.6r rockers work without problems or did you need to use a different spring rather than what came with the kit..

rjmcgee

Yes, I have the K1 kit and the springs were fine. I will say this though, I want to change the springs sometime with a set from Comp that match the cam. I have no float problems but I don't know what kind of quality these are that came with the heads. I would probably buy bare heads in the future and put them together with known quality parts. I guess hind sight is 20/20 and I did alot of research after I got the car running and some places don't assemble the heads with good quality parts. Also I found out that the rear gear ratio is very important with this combination. I broke the 3.42 rear that I had in the car and this weekend I put in a 2.73 rear that I had laying around. I could not believe how much of a dog it is with the tall gears in the back. Can't wait to see how the 4.10's feel when I get them done later.

supermaxxbasher

Alright guys I got my engine back and in the car again...I got the specs on everything put in it...compression is about 9.1:1 with 76cc heads, the cam is a crane cam 272* cam with .454 lift...what I want to know is if I added a set of those pro Lightning 7cc chamber heads with say those 1.6r rockers what kinda power would I see..I have the money for the heads but not for a bigger carb I am using a 600 edelbrock carb. But i have hedman headers with 2.5 true duals installed in it so I am good in that area... Will this get me into say around the 340 range for now until I can afford a bigger carb and cam. sorry for all the questions and the confusion..

supermaxxbasher

that is my last question I promise..