Teal91rs

Hey guys,
Can you help me on something? Im very lost on what cam i should put into my car i am just utterly confused.What are some cams that would be good for my set up cna you list the pros and cons and such and just flato ut help me out? THe setup goes like this
355 With "Flycut" Pistons (owner thought they where dished but ive discoverd thye arnt Im guessing a low 9:1 with there heads.
822 Casting heads with a little port work
In the last owners words "mystery cam"
performer mainfold and a 650 Holley on top with a dropbase 2 in k&n filter
waiting ot go in is a built th350 2800stall converter
The rear is posi with 3.73's
Any help is thankedi jsut need some adive on cam selections and im replaceing the heads with 434's with some stuf done to them

Stekman

You live in Fl, so no emissions, at least not that I am aware of. That gets object #1 out of the way.

The Xe274h cam is a good all around cam, and that would probably be my suggestion for performance.

Here's the kicker: those heads are holding you back BIG TIME. You would need a smaller cam in order to save torque (cam's valve timing bleeds off cylinder pressure). That, and those are REALLY cruddy heads for anything performance based. And I apologize for refering to "882 heads" and "performance" in the same paragraph and context.

Another thing: anything done to increase lift? i.e. milling the guide boss? How about screw in studs?

What are you wanting to get out of the engine?

Teal91rs

Hey Stekman,
Thanks for the reply and ill clearup some of you questions. First no Florida is not emissions controled. Second these heads are gongi into the garbage pile quite soon and im looknig to But all the stops nito these 434 CAsting heads and from what a fellow mebmer tells me he got all the goods for 400 bucks but the chamber goes from 60cc's to 65cc's which isnt bad for a descently flowing 2.02/1.60 head!!! Third im not expecting a sub 12 car im jsut looknig for a fun daily driver! this car is moderetly fast as it is and it mid range is beond killer ive yet to loose a race and the kill list is up too four cars that seem somewhat fast

Stekman

Well, casting numbers aside, where these heads (either) machined for more lift at the valve? If not, the Comp Xe262 is about all I would run on heads that old. Basically, that will be the deciding factor right now. The stall and rear gears (and compression, maybe) are all set to handle the 274h. However, with .490" lift with 1.5 rockers, thats a bit over the factory limit (~.460"-.480").

Teal91rs

Heres the scoop on the heads they where siting for quite some time so they arent a bolt on they need to be hot tanked and cleaned up they then are gonig to be built as a bare head for higherlift and better flow. Im gonig with screw in guildplates a stage 2 port 2.02/1.60 and all the other stuf it isnt going to cost over 500 dollars and i think ill be happy with the results The onyl proble is the powerband on the XE274R. its 1800-6000 and my powerband is idle to 5500 will rthat leave anyt affect. btw i forgeot ot mention my mainfold is a Performer EPS

Stekman

Ignore the cam to intake power band. It's nothing more than a suggestion, for the most part. Besides, you can change an intake far easier than the cam. I have used a Performer intake with Lunati cam (2000-6000).

Why not save some money and port them yourself? For the price of an electric die grinder and some carbides and the SA kit you can have yourself 2 things: 1.) good heads, 2.) new experience. And "I can't do it" isn't an answer for this one.

Teal91rs

Where could one learn to port his own heads? is there a write up or something i could use as a guideline?

Stekman

Look up Sitting Bull. He's got a good thing in his sig.

ME Leigh

Don't wasye $500 on stock heads. You could get http://www.protopline.com/pricesprod....htm#PROTORKER either these or the 223 6494 906 Pro- Stock Replacement 64cc chamber 1.940 Intake valve Vortec style heads.

Teal91rs

the problem with protops lines are thye are bare. i already have my 434's and now that stekmen told me i could port the heads myself my machineshop bill is down all i need is all the hardware for the head and geting the headcleaned up my buddy who owns a machine shop told me if i could get the porting done he would od the rest for 200 not a bad deal

ME Leigh

Those PRO heads aren't bare.

F-BIRD'88

Don't pay some one to port your 305 heads (434).
Do it yourself. You cannot hurt these heads.
If you thouroughly port them following my, Sitting Bulls and others advice from past posts you'll get good results. They will need a full on port job. All it takes is time and elbow grease.
Then take them in for machining etc. You can pin the studs to save money. A hi perf stock spring set is good for .510" lift cams. crane 99846 comes to mind. Shorten the guide boss and equalize the installed heights (shims)
Use new 1.94 x1.60 valves not 2.02's.

Buy a book by David Vizard on preparing small block chevy heads. All the info in there is relievent to porting 305 heads.

It's just not cost effective to pay some shop to spend the time nessessary to properly/ completely port these heads. When you can do it yourself at home. It takes too $$$$long.$$$$

Sitting Bull

You've gotten excellent advice from F-Bird'88 and Stekman. Follow the link at the end of my sig.