Dart NEW REVISED SHP SBC Cylinder Heads

[BOOT]

I'm actually surprised no one beat me to this post. Anyways Dart has changed their SHP SBC castings and I got one. Took a lot to get it! But I've had it for about a month now(life) and am editing the video atm that I made comparing it to the Old casting. There are A lot of changes and I like the New SHP casting.

Here is an article on it https://www.racepagesdigital.com/dart-m ... 9606824095

Link to the video that I also just made about a set of Old SHP casting that I got on sale last winter. https://youtu.be/Z7gCEhSxR_A

I'll edit and post a link to the New casting comparison soon, it should be posted Sunday but since my Old casting video teases it, figured I'd start my own thread now.

[F-BIRD'88]

Which port size new SHP head do you have?
Briefly.-- Bullet list--
What did you find thats better? Brief summary.

[steve cowan]

I have a set of 180 SHP heads.
What I dislike about them is the top cut transition to the chamber is crap.the chamber is scalloped out alot so to get a better transition I done
35 TC
40 2nd TC
50 seat
60
70 into 90% throat.
Have not had on the bench yet but might work.

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The last photo is the factory valve job

[BOOT]

Which port size new SHP head do you have?
Briefly.-- Bullet list--
What did you find thats better? Brief summary.

Old & New are 180cc 64cc chamber

I'll post more details after the video is done for those who don't wanna watch. Gonna try and take a pic for a question that I have tomorrow, still gotta edit and do some other odds ends. Might add another clip before the final edit.

[swampbuggy]

The new Dart casting looks really nice to me, would like to see w/ the valves out of it . These Cylinder Heads have just continued to get better and better. Whats around the corner ??? Mark H.

[BOOT]

The new Dart casting looks really nice to me, would like to see w/ the valves out of it . These Cylinder Heads have just continued to get better and better. Whats around the corner ??? Mark H.

I do like the Revised 180cc head, can't wait to see the 200cc. Got A lot to do today but I'll try and post some pics after the video is up hopefully tomorrow.

[af2]

Am I looking at a pro-action/ Rhs head?

[GARY C]

Am I looking at a pro-action/ Rhs head?

Pro Action/RHS head

[BOOT]

Video is up, gotta take a pic that I wanna post and ask some opinions about here in a bit.

https://youtu.be/42R26b6_sjg

edit: whoops wrong link

[1980RS]

I would have someone do a real performance valve job on those heads and re-flow them. Bet the numbers are better the 2nd time around.

[BOOT]

I would have someone do a real performance valve job on those heads and re-flow them. Bet the numbers are better the 2nd time around.

You talking bout the old castings that the VJ's checked bad? If so then possibly but a touch up should fix them good enough, IF I ever buy a 2nd and use the head. Dart didn't change the VJ for the NEW head it seems and I wouldn't put anymore money than needed into the Old castings since other heads(new SHP & other brands) are already better out of the box.

[af2]

I would like to see them compared to the RHS. Again flow and speed.

[af2]

Am I looking at a pro-action/ Rhs head?

Pro Action/RHS head

Closer!

[MELWAY]

This new casting. Look a lot like AFR castings.

I wonder if they come out of same factory as the
AFR enforcer heads?

Anyone confirm if these New Dart castings are USA made?

[1980RS]

I would have someone do a real performance valve job on those heads and re-flow them. Bet the numbers are better the 2nd time around.

You talking bout the old castings that the VJ's checked bad? If so then possibly but a touch up should fix them good enough, IF I ever buy a 2nd and use the head. Dart didn't change the VJ for the NEW head it seems and I wouldn't put anymore money than needed into the Old castings since other heads(new SHP & other brands) are already better out of the box.

Ask any Stock or Super Stock guy about out of the box heads and see if they run'em that way, I bet not. My friend who runs an A/Stock Camaro had his new GM BBC heads that cannot be messed with other than valve work re-done, they picked up a bunch redoing the seats and valves and those were new heads. I always go back to Vortecpro's video on new head and valve seat runout. I touch up every seat and valve on my own stuff I get and for me the results have paid off performance wise.