Thread: 305 in a bucket?

Tweet

Originally Posted by shawnlee28

Heres some dated 305 builds......
http://www.hioutput.com/tech/400hp/400hp.html
http://www.goingfaster.com/spo/343hp305.html
http://www.goingfaster.com/spo/carcraft325hp305.html
http://www.goingfaster.com/spo/290hp305.html
http://www.goingfaster.com/spo/modthel03.html
I say with the light rod ,go for the gold and shoot for the 400 hp build !!!!!!!

I think the 343HP build will work better with his 279 rear gear and a 2800 stall . Now I also see were a 305 will work just right in a light street rod ! I have built 307s that ran real strong in 3500lbs cars .

Originally Posted by tango

I think your stock ported 305 heads are just right for your set up . You can go to a larger 1.94 intake valve . This will help ! I did see a flow test on the world S/R 305 Torquer heads . And they flowed less then mild ported 305#416 heads . With the right port work done to your 305 heads they will flow 190 to 195ccs . And the 305 heads are 55 to 58cc This should be good for .5 CR over 64cc and 1.0 CR over 72cc heads . COOL

I think there might be some confusion here.
Flow is measured in CFM port volume is measured in cc's.
The biggest problem with the 305 heads is they shroud the intake valve and they are prone to cracking.
I don't work a lot with the stock 305 heads but I can tell you that the last test I ran on the World S/R Torquer out of the box was 219/170 @28 inches of water.
This was peak flow at .600 lift.
The last set of 441 heads I did with no work done to them was 198/140 @28 inches of water and .600 lift.

Check them at 500 lift . And what S/R Torquers are you talking about the 194/150 305 170cc 58cc are the one I have in mind . The flow #s you are giving are for Sportsman-II heads . And what about the drop in CR with the 67 to 72cc heads you are talking about ?

Originally Posted by tango

Check them at 500 lift . And what S/R Torquers are you talking about the 194/150 305 170cc 58cc are the one I have in mind . The flow #s you are giving are for Sportsman-II heads . And what about the drop in CR with the 67 to 72cc heads you are talking about ?

The S/R Torquers I buy are bare.
The test I did was with a 2.02/1.6 valve.
The test where done with a 58 cc combustion chamber.
The S/R head come in 58,67,76, cc's.
The flow numbers I gave where for a S/R Torquer head with the 2.02/1.6 valves ,street valve job with no porting or no gasket match.
The last set of World Sportsman heads went 241/162 @28 inches of water at .600 lift.

With all the info passed down, I'm going back to my stock heads that were ported. With all the combo's I have, it produced 304HP , and around 313 lbs. of torque. My 37 weighs 3,000 lbs. and with the gears change I'm going to make, it should be plenty for what I want. Thanks for all you info. Guess I'll wait till it warms up to pull my sportsman heads.

Originally Posted by erik erikson

The S/R Torquers I buy are bare.
The test I did was with a 2.02/1.6 valve.
The test where done with a 58 cc combustion chamber.
The S/R head come in 58,67,76, cc's.
The flow numbers I gave where for a S/R Torquer head with the 2.02/1.6 valves ,street valve job with no porting or no gasket match.
The last set of World Sportsman heads went 241/162 @28 inches of water at .600 lift.

The 58cc S/R heads only come with 1.94in/1.50ex seats . You may have cut a set to 2.02/1.60 . They were made to be used on 283to307 SBs The S/R Torquers with the 2.02in/1.60ex have the 67cc or 76cc chambers . They are 170cc intake runners and great street /strip 350 Heads .

Originally Posted by tango

The 58cc S/R heads only come with 1.94in/1.50ex seats . You may have cut a set to 2.02/1.60 . They were made to be used on 283to307 SBs The S/R Torquers with the 2.02in/1.60ex have the 67cc or 76cc chambers . They are 170cc intake runners and great street /strip 350 Heads .

I am not sure where you get your information.
I buy all my heads bare and "load them" myself.
All of the S/R Torquer heads have the same port volume wich is 170 cc's as cast.
You can buy them in 58,67,76 cc's.
The 58cc heads part number 04265B are for use on the 305 engine.
World also makes a head for 1987 and up.
Sometimes the information put in the magazines is wrong.
I also want to say I do this for a living and the flow numbers I have posted came from my shop.
This is not any form of advertising but I would like you to see some of my work.
www.e-squared-engineering.com

That is some nice work. You are a good man. And by the way . I am not a big fan of 305 heads . And it is true that a lot of the 305 #416 and #601s are cracked . I bought a set from a shop on E bay . I was going to ues them on my original 305 to do a build . They had new 184in/1.50ex S/S valves with screw in studs and guide plates . And both were cracked with repair made to them ? They never said that they were sending repaired castings ? Now they are bare and I am redoing them . I to also always bought heads bare . But this one time ! The last time . But if a guy has a good set of #416 or #601 heads they will work well for a 305 build after they have been ported . Like you I also do this work for a living 25 years . And for fun 30 years . And its still great to know more info on these engines . And I got my info on the S/R heads at www.worldcastings.com

Originally Posted by tango

That is some nice work. You are a good man. And by the way . I am not a big fan of 305 heads . And it is true that a lot of the 305 #416 and #601s are cracked . I bought a set from a shop on E bay . I was going to ues them on my original 305 to do a build . They had new 184in/1.50ex S/S valves with screw in studs and guide plates . And both were cracked with repair made to them ? They never said that they were sending repaired castings ? Now they are bare and I am redoing them . I to also always bought heads bare . But this one time ! The last time . But if a guy has a good set of #416 or #601 heads they will work well for a 305 build after they have been ported . Like you I also do this work for a living 25 years . And for fun 30 years . And its still great to know more info on these engines . And I got my info on the S/R heads at www.worldcastings.com

If we pool all are know how we can always learn a lot.

Erik now tell me about that bad a$$ 540 that you built . I built a few 396-402 BB chevys . But man what kind of power is that 540 making ? And the heads on that most have some BIG valves and PORTS !

Originally Posted by tango

Erik now tell me about that bad a$$ 540 that you built . I built a few 396-402 BB chevys . But man what kind of power is that 540 making ? And the heads on that most have some BIG valves and PORTS !

Dart block,I can't remember exactly but it is a mix of Eagle and Scat rods and crank,JE blower pisons,I have a few cams in it.
The last was a custom ground Comp. cam .715/.715,duration at @.050 is 278/288 cut on 114 L/S.
The heads are Brodix BB2X that have a bunch of port time on them.
I think final port volume is around 380 cc's.
The current blower is a 10-71 from the Blower shop.
It has twin 1050's dominators from Pro-systems.
As far as hp I would say it makes an honest 500 hp. or maybe a little more.

Do you drive that car on the street ? I think it has more like 800HP with that blower on it . And around 550HP with one carb on it ! WOW One day I want to run a blower on a 350 for my 1983 Monte . But I want one that will fit under the hood . This would be a good build for the 1979 350 4 bolt main that I have ??

Originally Posted by tango

Do you drive that car on the street ? I think it has more like 800HP with that blower on it . And around 550HP with one carb on it ! WOW One day I want to run a blower on a 350 for my 1983 Monte . But I want one that will fit under the hood . This would be a good build for the 1979 350 4 bolt main that I have ??

It really is a pain in the a$$ to keep valve springs in it.
If I built another engine for it I would build a 496 with a 8-71,and a "street roller" cam and a set of 335 AFR heads and build it to run on pump gas.

Originally Posted by tango

Do you drive that car on the street ? I think it has more like 800HP with that blower on it . And around 550HP with one carb on it ! WOW One day I want to run a blower on a 350 for my 1983 Monte . But I want one that will fit under the hood . This would be a good build for the 1979 350 4 bolt main that I have ??

look at a whipple <twin screw> supercharger you might like them