MOPAROFFICIAL
Oogliboogli
Okay they're done. Update coming ..Okay. We'll be waiting with you, lol. Look forward to more!
Okay they're done. Update coming ..Okay. We'll be waiting with you, lol. Look forward to more!
Bare with me.
Picked up the heads.
Have not flowed them, yet. I took pics, first.
I'm setting myself up so I have a few things I can test 'back-to-back' and not have to test, stop, do work, then go back and test.
I decided to work one port, moderately...but let me explain. The as cast vj on these leaves a ledge around the valve ..and the new one didn't rid that. Some use a chamber cut to sweep around the valve.....i use a stone...none the less that's gonna flow for **** like that in the pre .400 lift range. So because of that..i know what is gonna happen with an as cast right off the bat.. So to save time... i worked another intake port like i said and i dropped a 15 degree 2.250" stone that i cut a tiny 45/60 just on the outer edge to round it and then un shrouded the intake valve and rid that ledge...then i dropped a stock 1.94 dummy valve in and used the grinder with a tear drop pointed carbide bit to blend the stone cut. Below are pics of the after valve job and then the bowl/ssr blend and stone unshroud and blend.
I will have it on the bench for a 'as cast' test and the follow up of the work I've done tomorrow. Pics are with my phone.
I think it will be night and day between the 2. Guesses welcome.
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Thanks Stymie!Nice work there, Buckwheat.
Thanks Stymie!
Bare with me.
Picked up the heads.
Have not flowed them, yet. I took pics, first.
I'm setting myself up so I have a few things I can test 'back-to-back' and not have to test, stop, do work, then go back and test.
I decided to work one port, moderately...but let me explain. The as cast vj on these leaves a ledge around the valve ..and the new one didn't rid that. I sent them for guide resize and had a vj laid while they were there. Some use a chamber cut to sweep around the valve.....i use a stone...they used nothing and apparently didn't care about the ledge...none the less that's gonna flow for **** like that in the pre .400 lift range. So because of that..i know what is gonna happen with an as cast right off the bat.. So to save time... i worked another intake port like i said and i dropped a 15 degree 2.250" stone that i cut a tiny 45/60 just on the outer edge to round it and then un shrouded the intake valve and rid that ledge...then i dropped a stock 1.94 dummy valve in and used the grinder with a tear drop pointed carbide bit to blend the stone cut. Below are pics of the after valve job and then the bowl/ssr blend and stone unshroud and blend.
I will have it on the bench for a 'as cast' test and the follow up of the work I've done tomorrow. Pics are with my phone. Notice the 2 angle and radius on the exhaust, i really like seeing that. The intake is 4 angles and the un shroud radius.
I think it will be night and day between the 2. Guesses welcome.
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With that little bit of work, once all throats look at least like that, I would be happy running those on my truck.
Thanks for showing this and keep up the good work.
Awesome! Thanks for the update and taking the time to do the work!No good news here...lol
Well, there is and there isn't... not bad, but lacking a hair. As cast they are garbage.
As cast 1.94 11/32 valve @28 w/4" bore adapter.
Lift-cfm
.100- 47
.200- 98
.300- 147
.400- 181
.500-196
.600- 226
Nutshell, They flow like a 318 head ootb to .500
After the work i did above..
Lift-cfm
.100-63 +16
.200-119 +21
.300-178 +31
.400-212 +29
.500-246 +56
.600-254/257 bouncy/turbulent +26-28
Conclusion Now i have fiddle fk them more than i wanted. The chamber is still smothering...its a 1.94... though it's not a 2.02, it should still do about 10 cfm better .200-.400 lift. Imo
What will I do next you might be asking yourself....well... a 75 degree lower angle , lower the ssr height from the window side and work the chamber nearest the cyl wall for starters. I don't think the raised fin between the int/exh on the closed side is helping any either... The chamber can be opened more at the far side of the bowl right off the seat/15*.
This is a head that would just kill the perfomance bolted it on as is. They come with buried valve seats. If they could come up with or offer a cnc it would be the only way that'd be bought!
No problem. If i can stop and snap pics and get a min later in the day.. i post it. Its hard when theres little time to play.Awesome! Thanks for the update and taking the time to do the work!
I've seen 360 heads with ski slope 60's funnel to about a 1.75 hole do 204 cfm by .450+ lift. Lol. I figured they would suck at .100-.400 lift being buried. I was more optimistic on the peak ootb. Though s a higher lift fwiw 226 cfm is better than a factory magnum head as cast.From the pictures of the ports I would be surprised if they were higher than low 160s, but I have not seen one in person. Looking forward to that update.
No good news here...lol
Well, there is and there isn't... not bad, but lacking a hair. As cast they are garbage.
As cast 1.94 11/32 valve @28 w/4" bore adapter.
Lift-cfm
.100- 47
.200- 98
.300- 147
.400- 181
.500-196
.600- 226
Nutshell, They flow like a 318 head ootb up to .400 lift.
After the work i did in the last post +pinch and straight wall.
Lift-cfm
.100-63 +16
.200-119 +21
.300-178 +31
.400-212 +29
.500-246 +56
.600-254/257 bouncy/turbulent +26-28
Conclusion Now i have fiddle fk them more than i wanted. The chamber is still smothering...its a 1.94... though it's not a 2.02, it should still do about 10 cfm better .200-.400 lift. Imo
What will I do next you might be asking yourself....well... a 75 degree lower angle , lower the ssr height from the window side and work the chamber nearest the cyl wall for starters. I don't think the raised fin between the int/exh on the closed side is helping any either... The chamber can be opened more at the far side of the bowl right off the seat/15*.
This head ootb would just kill the perfomance bolted it on as is. Looks are decieving , and even a decent looking ssr can get road blocked by a intrusive chamber. Nothing new i guess. They come with buried valve seats. If they could come up with or offer a cnc it would be the only way they'd be bought!
Light on one and a hair over on the other. lolCheck your .400 and .500 math.