Gumby

Cam Me; PLZ

85 carbed 305 mostly stock except small tube headers. Runs great.

I do know a guy who has a set of large valve heads for a 305 he was gonna put on a 350 but not sure on the price or if they are worth it.

all I got in mind is a intake and cam, build my own q-jet, it already has small tube headers. Might change the rod n main bearings.

So cam choice is all i got left.

here is my new intake

"I won it on ebay for 56 bucks, 19 shipped.

Weiand Stealth Part #: 8004
Intake Manifold
Chevrolet 262, 283, 305, 307, 327, 350, 400 V8
1962-86 All Models


Features
Low rise/dual plane design
Idle-6000 RPM power band
No EGR provision
Spread bore and square bore carburetor mounting flanges
Lunati camshaft and lifter kit available under P/N 01001LK


Carburetor Recommendations
For Street Legal carbs, see application chart. 0-80555S (650 CFM spread bore); 0-80457S (600 CFM square bore); 0-4776S (600 CFM square bore)

Installation
Square bore carburetors may require plate P/N 9006 to seal properly. HEI will clear.

Specifications
Height - front 3.50", rear 4.00". Shipping weight is 17 lbs."





Not sure about the cam they recommend with that intake???

http://www.weiand.com/HiOctn/ProdLi...ECC/Chevy4.html

it a street strip cam but say rpm range 1000-4800


So Cam me plz. who why and which one should I pick up.

Mark A Shields

Either the Comp 262XE or 256XE.

Sitting Bull

Read this: https://www.thirdgen.org/techbb2/sho...hreadid=128575

And the answer is ... Crane PowerMax 260.

Gumby

Anyone got better part number???

Cant find either of those cams with that info. not online or in the summit catalog or at the cam makers home page. comp n crane

feelthedrama420

id go with the lt4 cam

Gumby

the guy at crane recommended part # 12242-2 (268) and 12238-2 (262)


he said I could use either in the 305, but when i told him I had lower gears he went with the 262 for some reason

comp pm 260 vr crane xe 262


crane cam 113901 and comp 12238-2
at .004 lift, the crane cam has 260/272 duration
at .006 lift, the comp cam has 260/272 duration
@ .05 lift, the crane has 204/216 duration
@ .05 lift, the comp has 218/224 duration
crane has 112 deg lobe separation
comp has 110 deg lobe separation
max lift for crane is .427/.454
max lift for comp is .462/.469
the lift @ .050 for crane is .107/.117
the lift @ .050 for comp is .318/.320 - big difference


http://www.compcams.com/information/...ts/DynoSheets/

Gumby

well where I think it counts, 2-3500 rpm is where its won or lost, the comp 262 is the winner.

Gumby

crane 260

Gumby

comp 268

Sitting Bull

There is only a 2 or 3 hp difference with those cams. That's a wash because every engine is a little different.

No advantage either way.

Gumby

yea only a tad better but also a tad cheaper. I defended your 260 choice to the hilt but I did not run any of the test. friend did. and the number look better there and in drag 2000.

if you have icq you and my friend can go round and round. you both talk a good talk.

Sitting Bull

There are certain other things you should consider as well, which I don't know the answer to in your situation.

-rear gears

-transmission

-heads

-intake, etc.

I would say "Sure, go with the XE 262" if you had 3.73 gears and a 2500 rpm torque converter, or a standard tranmission.

Tell me what you have. I'm running a stock 1400 rpm converter and 3.42 gears. For my combo the Crane is superior because I don't need to resort to a high stall unit and I can run it all winter long.

I'm just astounded at how well that Crane grind, using such conservative lift and duration, compares to the XE 262. They are virtually identical!

Gumby

t5 gears 2.95 1.94 1.34 1.00 .63
rear end 3.42

85 iroc 305 going into an 86 bird

got a wieand stealth 1dle-6000 rpm range.

heads are gonna stay stock, but gonna port match n polish them myself.

port matching is a must, the polish we be cause im there.

Gumby

and some small tube headers , not sure on the brand but they look good still.

Sitting Bull

OK, all your stuff looks good. Just do your porting and polishing, it's not hard so don't stop at gasket matching. Also, enlarge that intake valve out to 1.94". Then run whichever cam you fancy. I'm not going to be dogmatic about it. It's your car and I doubt that you get -40* in the winter!

Gumby

I found your port n polish thread but maybe you can explain to me in more detail about
"enlarge that intake valve out to 1.94"."
how why what?
inlarge the valve,
ill need some new valves then???
how do i know i hit 1.94

i tried sleeping but got up thinking about cars, wonder why.

Sitting Bull

Enlarging the intake valve must be done by your machine shop. They'll grind it out that extra .10" and fit a new set of valves to it, too.