[tom s]

The bean counters are running Edelbrock,ROI is all the think about!Tom

[GoatZillaRacing]

Originally Posted by GoatZillaRacing

As much as you would think these SpeedMaster heads would just be thrown together, here’s another little fact I found.
The installed height is listed as 1.800 and they actually measured 1.795.
Upon removing the spring cups and noticing different colored shims under them. I measured these and they varied by .005. This means that the assemblers at SpeedMaster measured things too or all the spring installed heights would not have come out at 1.795.
We’re thinking about testing these on our dragster because we have data on that combination and it just so happens that our roller cam setup has an installed height of 1.800 too. Stay Tuned!
Will Post Pics As Soon As Site Will Allow It!

Pictures!

[GoatZillaRacing]

We just ordered another singe bare head to be sliced up and dissected to evaluate these heads properly. Look for an upcoming magazine article with all the details.

[GoatZillaRacing]

This long skinny car plans to do some evaluating of it's own!

[grivera]

Casting looks great. Thanks for the update and looking forward to your results.

[Firebob]

When will the live testing begin?

[GoatZillaRacing]

Originally Posted by Firebob

When will the live testing begin?

Trying to get the dragster back together for INJUN WARS in July.

[adynes]

Originally Posted by GoatZillaRacing

We just ordered another singe bare head to be sliced up and dissected to evaluate these heads properly. Look for an upcoming magazine article with all the details.

Will you be using/testing the Speedmaster MLS head gaskets too?

[Glenn Lever]

I have seen some SpeedMaster Quality problems.

This was a brand new out of the box intake with a hole in one of the runners.

I cannot get the You Tube Viewing window to work so this is the link.

https://www.youtube.com/watch?v=-8uj...RE7zij&index=3

[GoatZillaRacing]

Originally Posted by Glenn Lever

I have seen some SpeedMaster Quality problems.

This was a brand new out of the box intake with a hole in one of the runners.

I cannot get the You Tube Viewing window to work so this is the link.

https://www.youtube.com/watch?v=-8uj...RE7zij&index=3

These heads are Gravity Die Cast and look a lot nicer than those intakes. We're getting a bare head here Monday to cut up and do a magazine article on. They are man made and that leaves room for mistakes but they look good so far.

[Glenn Lever]

Good deal. Just wanted to share what I had found. Not trying to slam a vendor. Everyone has quality problems. Would have thought a quick vacuum check would have found the problem before a customer.

Just think how long it might have taken to find this hole on the car, and how bad the engine would have run.

[GoatZillaRacing]

I should have that sacrificial head on Monday and just wondered if anyone had ever sliced one of these up in the past. I can use a band saw but my concern is not so much cutting the aluminum as much as cutting the seats.
I also have a nice cutoff saw that I might use.
They say, "Experience is the best teacher", but I say, "Other people's experience is the best teacher".
Class is open and the teacher is now the student.

[mgarblik]

Originally Posted by GoatZillaRacing

I should have that sacrificial head on Monday and just wondered if anyone had ever sliced one of these up in the past. I can use a band saw but my concern is not so much cutting the aluminum as much as cutting the seats.
I also have a nice cutoff saw that I might use.
They say, "Experience is the best teacher", but I say, "Other people's experience is the best teacher".
Class is open and the teacher is now the student.

We cut up an Edelbrock head with a band saw. No problem at all. A band saw won't know those valve seats are even there. Couple of areas or interest to open up for observation. I would cut the head in half first. Then I would cut the deck surface off at least 1 cylinder worth. This will open up the casting so you can really look at how they designed the coring for the water. You can get a good idea of the casting thickness around critical areas. Examples would be how close the water is to the short turn radius, spring seats, exhaust valve pocket. Also cutting the deck off gives you a good look at the head bolt column thickness which is critical on a light, flimsy, aluminum head. This was a problem with the early E-heads and they had to revise the casting. You will also get an idea of how much of the casting itself is void. It has to have more water area inside than an E-head if it is lighter. The outside dimensions are fixed. So knowing where the metal is not present is important in determining if the head will seal a gasket and not look like a potato chip after it is run a few hours. Look forward to seeing the inside of one of these heads. Looks pretty nice on the outside which means little in the long run. Hoping for the best.

[64speed]

If these heads turn out to be as good as they look there will be no reason left to try to save a pair of iron heads unless it’s a concours, numbers matching or just already had a ton of port work done to iron heads. I think getting someone to cast a set of Pontiac iron heads would be a great idea but I just don’t see it happening. I bought a bare 455 block because it was all I could find. The only part on it that isn’t aftermarket is the block itself. After searching for heads for a while I gave up and set my sites on Edelbrock. I looked on eBay for months and just finding good castings that had been rebuilt we’re 2/3rd of the way there. Why not go aluminum and get 310 cfm

[GoatZillaRacing]

We put a bunch of heads on our eBay Store at https://www.ebay.com/str/rpmspeedshopindy and we are getting better than 10 times the response on the Pontiac heads. That shows you why "they" can ask and get more money. There is a high demand and relatively few choices.
No matter how you slice it, this is great news for our Arrow Injuneering heads too!
Nice to see so many people still keeping the Pontiac torch burning bright.
BTW, if you go to the store and make a best offer of $1799 for the complete SpeedMaster heads or $769 per head bare, you got a deal!

[GoatZillaRacing]

Originally Posted by GoatZillaRacing

We put a bunch of heads on our eBay Store at https://www.ebay.com/str/rpmspeedshopindy and we are getting better than 10 times the response on the Pontiac heads. That shows you why "they" can ask and get more money. There is a high demand and relatively few choices.
No matter how you slice it, this is great news for our Arrow Injuneering heads too!
Nice to see so many people still keeping the Pontiac torch burning bright.
BTW, if you go to the store and make a best offer of $1799 for the complete SpeedMaster heads or $769 per head bare, you got a deal!

Just to clarify, we listed a bunch of SOB heads. Some Other Brand of car like Chevy, Ford, Mopar, and the Pontiac heads have received 325+ views -vs- an average of less than 30 for the SOBs.

[JLMounce]

There’s been a lot of speculation on why heads are priced like they are for the Pontiac world. I’ve long suspected that to an extent they are priced high because they can be. Not necessarily because their overhead is larger.

[mgarblik]

Originally Posted by GoatZillaRacing

We put a bunch of heads on our eBay Store at https://www.ebay.com/str/rpmspeedshopindy and we are getting better than 10 times the response on the Pontiac heads. That shows you why "they" can ask and get more money. There is a high demand and relatively few choices.
No matter how you slice it, this is great news for our Arrow Injuneering heads too!
Nice to see so many people still keeping the Pontiac torch burning bright.
BTW, if you go to the store and make a best offer of $1799 for the complete SpeedMaster heads or $769 per head bare, you got a deal!

That's why once again, you would sell even 10 times more heads if a decent IRON offering was available. So many advantages on an iron block for the average street guy than heads made out of mush metal. Keep up the good work and the Pontiac torch lit.

[72projectbird]

Did you get a chance to slice open a head?

I'm very interested in these. If everything looks good I don't mind picking up a set and being the Guinea pig.

[GoatZillaRacing]

Originally Posted by 72projectbird

Did you get a chance to slice open a head?

I'm very interested in these. If everything looks good I don't mind picking up a set and being the Guinea pig.

I have a complete set and now a bare head to sacrifice. I'm going over it with Dave Wilcox this weekend then back to the shop to slice and dice.

Reporting soon and also in a magazine article.