Dragons91RS

Im in the planning stage of my LO3 build up. Im trying to figure out cost and what to expect down the road as things are done.

my goal is to have a mild, but respectable daily driven LO3.
so far Im looking at the following parts.
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Edelbrock Performer-Plus Camshaft
* Advertised duration: 244 intake/264 exhaust
* Duration at .050 in.: 194 intake/214 exhaust
* Gross valve lift: 398 in. intake/442 in. exhaust
* Lobe separation: 112 degrees
* RPM range: Idle to 5,500
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Edelbrock Performer Intake Manifold

Competition Cams Magnum Steel Roller Tip Rockers
self aligning, 3/8 in. stud, 1.6 ratio, chromemoly, roller tip

headers, and exhaust

does that sound like it would wake the poor little LO3 up a little bit? if so what gains would be expected?

Dewey316

forget that camshaft, it is a waist of money.

if that manifold you are looking at is the performer TBI, forget it, it is another waist of money.

i would suggest 1) don't bother doing a cam swap,without doing heads. with the swirl ports, you will never be happy with your upgrades. 2) plan 50% more money than you price everything, the misc. stuff adds up fast

if you take those to heart, once you figure out what heads you want, then we can talk about picking intake and cam.

Ronny

iTrader: (1)

is has become so clear to me in past year and 1/2 that you need to think of as a complimentary package of mods. sure the exhaust is a big help but when we think of engine it needs to be in a "system" package. 200HP, 250HP, 300HP. where all parts work together.

Dewey316

so true. :hail:

i have been saying that for a long time. hopefully more people will pick up on it.

there is SOOOOO much more to making HP, and reaching your goals than just tossing some parts on.

25THRSS

The cam is crap, it's flat tappet anyways, so you don't want it. Get something with more duration and don't worry about going too crazy with lift because the stock heads can't handle it anyways. The edelbrock performer is a good choice though. Nothing wrong with it at all.

Dragons91RS

according to Summit that is a hydraulic cam made for the 305-350 TBI and LG-4 that doesnt require any changes to the computer, and will idle well. also I figured it would be ok with the stock heads. which is what Id like for right now.

Im thinking about the Edelbrock heads that match the intake, and cam. thing is they would be in the far distant future so I didnt mention them. I also figured later on down the road I could get a bigger cam to go with the heads.

here are the head spec's. there for a 1987-95 350 but I fugured I could have them milled down so I could keep the correct compression for my 305.
Int. port vol. 165cc
Exh. port vol. 60cc
Chamb. vol. 60cc
Deck thickness 9/16 in.
Int. valve size 2.02 in.
Exh. valve size 1.60 in.
Valve spring dia. 1.45 in.
Rocker stud dia. 3/8 in.
Pushrod dia. 5/16 in.
Maximum Valve Lift .575 in.
Bolt Torque 65 ft.-lbs

Im new to building up engines so if Im wrong with any of my assumptions please correct me.

25THRSS

It is for the 305-350 tbi engines, but for the trucks so it is flat tappet. If you are upgrading heads please do not get that cam regardless. Get something that actually has descent lift and duration, which that cam does not!

Dragons91RS

ok the description at summit says noting about flat tappet. what exactly is the dif between what the Camaro has and the flat tappet? also I did a quick search for flat tappet and several people are using them. what would be a reason not to?

also can you all tell me what would be a good cam to get that will work ok with the stock heads and computer that I can get new with new hydraulic lifters for $125 from summit?

brodyscamaro

stick with you roller buddy

vjo90RS8

iTrader: (1)

camaros have hydralic roller camshafts/lifters, if you wanted to use a flat tappet camshaft you would have to change the lifters and pushrods too. But just stick with a roller camshaft, they do not wear nearly as fast as flat tappets and there must be a reason that flat tappets are no longer used on new cars today, not saying they are bad but i just think if you have a roller setup it is wise to stick with it. If you want a cheap roller camshaft go to www.competitionproducts.com , go to the catalog and click on camshafts, there is a vortec roller camshaft for only $50. specs: 202/206 .410/.424 115* LSA. Better than the Edelbrock cam and WAY better than the stock one. And you can reuse your lifters since roller lifters dont wear much.

Dragons91RS

ok what about this cam.

Performer RPM; Camshaft Kit; Small Block Chevy; Hydraulic; 1500 To 6500 RPM; Valve Lift Intake .539; Exhaust .548; 87-92 Chevy Small Block. EDL part #2204(Im sure its a roller cam, got it from the vehicle parts look up on the Edelbrock site and stated roller cams only)

match it to the heads and intake I already listed.
would that be a good top end set up?

Dragons91RS

cought my own mistake.

that cam will not work with those heads on the 305 due to it having smaller than a 4" bore. the cam has to much lift. so I need to eather come up with a dif cam, or dif heads.

any recomendations?

MX265

They're not lying... With those stock swirl port heads, you are MUCH better off swapping them when you swap your cam. Not to mention, you are most of the way there once you remove everything for the cam swap.

Andy

82CamaroZ28

As already stated, do plan on doing something with your heads if you want to get a cam. You won't see much of an improvement if you don't. 82-86 305 H.O. Heads (416 castings) are said to be a significant improvement over the 'swirl port' heads. Can even make 'em better with a port & polish, bigger intake valves and a 3-angle valve job.

Also since your block is already set up for roller, look for a Hydraulic ROLLER cam. Roller cams are much better than regular hydraulic flat-tappet. Also, the Edelbrock cams are pretty extreme for a 305. Your best option is to figure out what you are going to do for heads and then call the COMP cams recommendation phone number and they will set you up with the best cam for your application.

Dewey316

my suggestion is to 1) put the edelbrock catalog away when you are looking for cams.

like everyone is going to say, putting just a cam in our engine is like trying to polish a turd. its a waist. get a set of heads (heck unported TPI heads are like $50, and MUCH better than the heads on our cars.

for a cam, i am tryijng to sell an UltraDyne Racign cam right now and it is right where you should be looking 206/216 .447 .447 112

the vortec one posted above, like most other GM factory cams, has a 115* LSA, personaly if you going for some performance, i would look in the 114-112 range. i wouldn't go with the factory lt1 or vortec cams with their 115 and 116.

82CamaroZ28

Yes, TPI heads (LB9 - Casting # 081) would be a good direct replacement and you could still use your intake manifold. The 081's are said to flow the same as 416s except they are centerbolt.

azvolfan

Isn't there something about the '416' castings that has to be changed on a later model 3rdgen. Like 4 of the bolts or something like that?

Bill

Dragons91RS

I very well may look into those. anyone have any idea about what a pair would cost from a junkyard?