Stage 6 Ports

[Garys1969RR]

I was wondering what kind of porting this looks like on these Stage 6 heads I acquired. I thought it looks kind of like CNC porting, but not sure. Any ideas?

 

[Garys1969RR]

 

[Garys1969RR]

 

[lewtot184]

hand job

 

[beanhead]

hand job

Sorry couldn't help it......

 

[HEMI-ITIS]

There are adapter plates.

 

[Garys1969RR]

There are adapter plates.

Yes, they came with adapter plates, just not sure how well these will work. I know the stage 6 heads leave something to be desired in stock form. I suppose if I bolt them onto a 440 with tight quench (.037"), and around 12 to 1 C Ratio, they might make decent power at 5400 feet.

 

[Garys1969RR]

hand job

Haha, could be. LOL..... Is there a way to distinguish CNC porting from other types? The tool marks look pretty regular, as if done by a machine. I guess the only real way to see if they are going to work well, is to bolt them onto a motor and go for it!

 

[POMONAMISSEL]

the spacers are for when there used on a rb block , they were designed for rb intakes on a b block . they flow good after porting , need special rocker assemblies .

 

[Garys1969RR]

the spacers are for when there used on a rb block , they were designed for rb intakes on a b block . they flow good after porting , need special rocker assemblies .

Good to know that they flow well after porting. I have 2 M-1 intakes, one for a B, and one for an RB. Plus I have spacers. Bad news is that I don't have any special rocker arms that fit the Stage 6 heads. Are these offset for the intake ports?

 

[lewtot184]

Haha, could be. LOL..... Is there a way to distinguish CNC porting from other types? The tool marks look pretty regular, as if done by a machine. I guess the only real way to see if they are going to work well, is to bolt them onto a motor and go for it!

they're not cnc'd, unless somebody took a grit roll over the tooling marks.

 

[POMONAMISSEL]

yes there offset , mine are maxwedge sized ports , thought m1's were standard ports . at least my m1's are .

 

[HEMI-ITIS]

Yes, they came with adapter plates, just not sure how well these will work. I know the stage 6 heads leave something to be desired in stock form. I suppose if I bolt them onto a 440 with tight quench (.037"), and around 12 to 1 C Ratio, they might make decent power at 5400 feet.

5400 ft??? We complain if it's over 1000,,,,,

Check out this http://www.hotrod.com/articles/mopp-0405-stage-vi-manifold-casting/

 

[Garys1969RR]

Thanks! That's a very helpful article! You know, I believe these have stock size port windows, although I haven't measured them yet. The article states that these heads are available with stock size intake ports, or max wedge size.

 

[rumblefish360]

never mind, article said it for me.

 

[HEMI-ITIS]

I obtained a pair of Chapman ported heads with T&D rockers for Brians wedge.

 

[Garys1969RR]

Anyone know what the stock chamber cc size is, for a stage 6 head?

 

[POMONAMISSEL]

well just by chance i'm doing a b 400 block to a 470 , with a ported version of the mw port sized stage 6's done by dave story in ky . using a matched mopar maxwedge intake twin 750cfm carbs . my cam grinder is got a cam in mind for it . but whats everybody running with there packages ? oh its for my 63 sf .

 

[POMONAMISSEL]

hemi-itis , how did you like the t&d rockers , i've got the mopar ones , they are in need of work . new in the boxes with cocked roller tips , roll pins hanging out . never run . so i'll fix them if i must , always looking for others that could work . does h/s make a setup also ? oh and your 63 is one bad *** ride man . mine is a kick , new engine a wilder kick , but yours is kick *** .

 

[lewtot184]

untouched chambers are around 75cc.