U/SA 302 ffffford build

[goinbroke2]

I only have .382/.398 for lift and 30* is better for flow at low lifts. If i had a lot of lift then id use a higher angle like 60*. The 45* is the factory number and works like factory ?middle of the road?, same as factory cams etc.

Of course i know squat compared to any of the builders on here so maybe they will chime in??

[Glenn Briglio]

Originally Posted by goinbroke2

I only have .382/.398 for lift and 30* is better for flow at low lifts. If i had a lot of lift then id use a higher angle like 60*. The 45* is the factory number and works like factory ?middle of the road?, same as factory cams etc.

Of course i know squat compared to any of the builders on here so maybe they will chime in??

Are you using a dwell style camshaft ? If so you might want to flow test your different valve and seat angles.

[Mark Yacavone]

Originally Posted by goinbroke2

I only have .382/.398 for lift and 30* is better for flow at low lifts. If i had a lot of lift then id use a higher angle like 60*. The 45* is the factory number and works like factory ?middle of the road?, same as factory cams etc.

Of course i know squat compared to any of the builders on here so maybe they will chime in??

gb, Suggestion here>
You've got the right cam and carb there. This is an easy combo.
Don't try to re-invent the wheel.
I don't see a flow bench in the the pics, so, in absence of one , you might want to use a 30, 45 sealing angle, 60, 70 and so on,...whatever fits ;-)

[goinbroke2]

Thanks mark, i was going according to someone else who ran the combo,(very successfully , lol) after grinding a couple practice seats on a garbage head im concerned about the valve drop. 30* was what someone else ran but that was after replacing all the seats. Dont think im there yet, 16 seats for a bit more power?

Im going back out and make a decision.

[goinbroke2]

I have two seats at 30* and im not a fan. So, either get the 45 back or ill have to replace the seats.
I did two others at my regular 15/30/45 seat/60 throat. I thought I had a 75 but i cant find it. Regardless, i like it better and if i lose a bit of power, im ok with that.

I can see why "stock" heads can cost so much! Course if i was better it would be quicker but ive aready got about 17hrs into them with cleaning, guides, porting, (just kidding) lol! Still have to do the valve job and adjust stem height and installed height.. lots of hours left.
I also got one side of the heat crossover in the intake plugged and need to do the other side, little by little, lol.
And thanks to those who pm'd me!!

[goinbroke2]

Earlier tonight, only 11:30 pm, lol.

I didn't like how low the 30* seat was so I tried to save it and did! So I got all intakes and exh valves ground and the valve job done.
15/30/45seat/60throat

After that was done I used lite springs to check stem height. Got them all within .012 by trimming the tip. Now I have to work on the installed height.

Of course nothing is easy, the LED light on my valve grinder went bad and it's continually flashing, try to see where the contact is with that! LOL!

After the heads were cleaned I see this mess in one chamber, not sure if someone chattered a stone or something let go, who knows but how do I fix it or can I fix it since you can't do anything in the chamber?


Still moving forward, so that's good.

[Mark Yacavone]

Originally Posted by goinbroke2

Thanks mark, i was going according to someone else who ran the combo,(very successfully , lol) after grinding a couple practice seats on a garbage head im concerned about the valve drop. 30* was what someone else ran but that was after replacing all the seats. Dont think im there yet, 16 seats for a bit more power?

Im going back out and make a decision.

If I might interject here, for those doing their own valve jobs..Stock valve angle is required in Stock , + or - ! degree.

[Glenn Briglio]

Originally Posted by Mark Yacavone

If I might interject here, for those doing their own valve jobs..Stock valve angle is required in Stock , + or - ! degree.

What angle are you referring to ?

[Mark Yacavone]

Originally Posted by Glenn Briglio

What angle are you referring to ?

Glenn, I am referring to the angle that is built into the valve.

Always fun to go into a teardown with a Pontiac and watch them pick up the 45 deg. angle gauge and place it on your intake valve. ;-)

[Glenn Briglio]

Originally Posted by Mark Yacavone

Glenn, I am referring to the angle that is built into the valve.

Always fun to go into a teardown with a Pontiac and watch them pick up the 45 deg. angle gauge and place it on your intake valve. ;-)

Quite confusing but I believe it's any valve angle allowed.