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Author Topic:   305 heads ??
street stock 40plus
Member
posted December 03, 2003 10:47 AM
Can anyone tell me what are the best 305 heads to look for to build and run street stock on a 350 chev. I cracked my last set of 461's this last season. Our rules are factory cast and there are just no more camel backs to be found around this area. I'm thinking of going with 305 heads like many others here have done but I know very little about them. Any information, web sites, casting numbers, tech. tips. ect. would be much appreciated.
Thanks, ss40plus


Raz_900
Member
posted December 03, 2003 11:28 AM
The casting number is 601 for the HO 305 heads. That came with 1.84" & 1.5" valves.

I have a pair that I think are ok (blew a head gasket and swapped them for 461's on the change) that have been setup for screw in studs, guideplates (pushrod holes drilled for 1.6 rockers) and 1.94" and 1.6" valves. I also have a 3rd head that was a spare (untouched).

I also have a pair of 041's that have been ported by someone in there lives. Haven't checked the valve size on them.

Shoot me an email at Raz900@comcast.net if you're interested in either the 601s or the 041s. I was going to trade them in at the engine shop when I take this years block in. They'd be just the castings, but at least 2 of the 601s have the machine work done to them. Shipping would kind of suck, but I'm not looking for big money from them (a little more for the 041s than the 601s). I came across a good deal on World SR Torquers, so I just won't need them anymore.

Later,
Steve


45cent
unregistered
posted December 03, 2003 11:46 AM           
305 okay I used but looking for something better now I think the way to go is vortec that is for sure


dan ferry
Member
posted December 03, 2003 05:07 PM
check out the post heads and intake choice further down the list in street stock i posted numbers for 305 heads and the post after mine says which flow better


racer17j
Member
posted December 03, 2003 06:00 PM
check e bay for some humps or vortec's


Dirt01
Member
posted December 03, 2003 07:27 PM
You need to get out of Silver Springs and get to Reno, looking for heads. I've got a set of 291's ready to bolt on that I could probably be persuaded to sell. For the price it would probably be better to get a set of Vortecs. You can run them at RFR. I know where another set of bare 291's are that I could get you for $75. They are just sitting in a garage and just need to be rebuilt. Even know a **** good machinist here who could do the work for you.

[This message has been edited by Dirt01 (edited December 03, 2003).]

[This message has been edited by Dirt01 (edited December 03, 2003).]

copper
Member
posted December 03, 2003 08:45 PM
I had a engine builder give me this web site today give it a try i haven't had a chance yet www.mortec.com tells cast #s ect.


Okie11m
Member
posted December 03, 2003 11:54 PM
You will be better off with any 350 heads rather than 305s. They wont flow worth a ****.


wayoutfront
Member
posted December 04, 2003 09:01 AM
Okie11, Evidently you haven't done your homework, because we are running 180cc's out of our 601- 305 heads. We have had a motor on the dyno just to prove the difference to ourselves. It just depends on how you set your motor up and how big of track you are running on.


Okie11m
Member
posted December 05, 2003 06:41 PM
How much time & money did you put into your heads compaired to getting a set of 350s to do the same thing. If 305s where that great why dose a good set of double humps sell when the 305s go to the bone yard.


flatfoot27
Member
posted December 05, 2003 10:55 PM
Okie, Don't get me wrong humps are great, but we cannot run them at our track in the bomber class. They work real well on short tracks. Their are alot of drivers running them in Nebr. and Ia. I have about 600.00 in mine and could of spent more. But we have a 600.00 claim so that is self explanitory. We run 3 355's set up all the same way and from 35 to 5800 rpm these really pull. We have had really good luck with them. But we never hardly run over 6000 rpm. We have done alot of research on these heads and have a combination that works well.


Okie11m
Member
posted December 06, 2003 02:30 PM
I see now. My buddy trieid some on a 355 one night that had 202s put in them & hogged out & I thought he was letting off before the flag stand. He was trying to turn it 7300.( with the humps he was) If you are just turning it 6000 there is alot of difference.


flatfoot27
Member
posted December 06, 2003 05:35 PM
Ya they won't give you much after 6000, but if have the right cam they dang sure will pull. If I ran a bigger track I think I would just get some 882's or something and have them milled. But we don't have a weight rule either. I don't think they would pull a heavy car. I want to run a 406 this year and I don't know what head to run. I would like to run some 64cc heads but I'm not sure how to get away with it. This a new creature for me. But i can't wait it should be fun with a 406. Especially in a 2600lb car.


Dirt01
Member
posted December 10, 2003 07:37 PM
Hey 40 plus, check your e-mail. Did you crack both of your 461's? If you have one good one, I have one virgin 461, clean and magged, crack-free $40.