Head and Cam Mistakes
Drifting
Joined: Jul 2013
Posts: 1,299
Likes: 93
From: Tri-Cities TN
Lift Intake Exhaust
.300 202 145
.400 235 175
.500 241 185
.600 248 190
Super Flow HP Formula
248 x .2575 x 8cylinders = 510.88 HP at 100% VE is what the head can make out of the box.
Head is as cast out of the box. The above numbers are with no added work to the basic 3 angle cut on the seat. Margins have not been narrow or played with.
Scott did some some just bowl work and put a valve job on one set to see how they would respond. They flowed 276 at .600"
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
These are off my SF 600 in TN air:
Lift Intake Exhaust
.300 202 145
.400 235 175
.500 241 185
.600 248 190
Super Flow HP Formula
248 x .2575 x 8cylinders = 510.88 HP at 100% VE is what the head can make out of the box.
Head is as cast out of the box. The above numbers are with no added work to the basic 3 angle cut on the seat. Margins have not been narrow or played with.
Scott did some some just bowl work and put a valve job on one set to see how they would respond. They flowed 276 at .600"
Drifting
Joined: Jul 2013
Posts: 1,299
Likes: 93
From: Tri-Cities TN
If you look back on hte Car Craft article in 2012 SBC Budget Head shoot out, this head came out on top. For a budget import casting it is a very good head. Is it an AFR, no. It is budget friendly for many performance guys wanting bang for the buck, yes.
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
I remember the article. They made more power than the dart shp, not by a lot, but still more. Are these the same heads you have on your web site for $695.00 a pair assembled?
Last edited by bluedawg; Dec 18, 2013 at 04:25 PM. Reason: dropped my beer!
Drifting
Joined: Jul 2013
Posts: 1,299
Likes: 93
From: Tri-Cities TN
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
That's cheap for sure, cheaper than what vortecs cost not to mention they work with a standard intake. Add four or five hundred bucks worth of porting and you got heads that are close to flow of a set of afrs for around 1100.
Last edited by bluedawg; Dec 18, 2013 at 04:23 PM. Reason: that time of the month....
Drifting
Joined: Jul 2013
Posts: 1,299
Likes: 93
From: Tri-Cities TN
The casting when compared to other import heads is 2#'s heavier. That's quite a bit more meat.
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Team Owner
Joined: Sep 2002
Posts: 38,360
Likes: 2,085
From: California
I agree, you are not asking for a whole lot!
Using the components that you have it is do able!!! Even a little porting, or cleanup the flow and rockers etc.. should do it.
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
I'd completely agree that for a 35 horse gain that it's just a cam swap away. Id also think that 35 horse gain all be it more power and would be noticeable would just start the horse power addiction.
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
I'm not discrediting any thing but there's a lot of talk on the forum lately about these inexpensive crate motors that folks want to add more power to. Even bigger is the discussion that follows about weather or not the short block can take it. I get accused of working for afr cause if budget allows that's what I usually suggest. It's funny.
Melting Slicks
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
I'm not discrediting any thing but there's a lot of talk on the forum lately about these inexpensive crate motors that folks want to add more power to. Even bigger is the discussion that follows about weather or not the short block can take it. I get accused of working for afr cause if budget allows that's what I usually suggest. It's funny.
I will be putting a top end kit on some day, maybe sooner rather than later but don't think I'll be going with AFR heads but instead will go with the Patriot as car craft rated them high and the price is more in my budget
Safety Car
Joined: Jan 2009
Posts: 3,736
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From: anchorage ak
I went back to the other article were the short block was used with nitrous and the dint talk about changing the pistons. What was interesting is the article and scroggin dickey both confirm the consensus on the forum about gms compression ratio being over valued. The end up hitting it with a 200 shot and hit there goal, but I wouldn't figure that engine would last long with that.
Safety Car
Joined: Jan 2009
Posts: 3,736
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From: anchorage ak
I have one of the budget crate motors that I believe some are talking about. It's a good motor for the money, it fit my budget at the time, and has 4 bolt mains so I don't see any issue in adding a top end kit and even adding a roller cam and spinning the motor up higher as the bottom end should handle the extra power and revs...
I will be putting a top end kit on some day, maybe sooner rather than later but don't think I'll be going with AFR heads but instead will go with the Patriot as car craft rated them high and the price is more in my budget
Last edited by bluedawg; Dec 19, 2013 at 12:25 PM.
Melting Slicks
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
For the money straubs heads seem like a budget value. I'm an afr fan, but afr are more than double the price and if on a tight budget but wanted more power would eat up a big part of the budget. If memory serves me the biggest part of the discussion was about the powdered metal rods and cast pistons holding up. When you do your stipend you should start a thread on it.
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
I'm not discrediting any thing but there's a lot of talk on the forum lately about these inexpensive crate motors that folks want to add more power to. Even bigger is the discussion that follows about weather or not the short block can take it. I get accused of working for afr cause if budget allows that's what I usually suggest. It's funny.
Only good thing I see about them is that it is a four bolt main and it is probably pretty good for what HP it is rated at in that price range.
If a guy wants just a small bump and doesn't have a good block or bottom end to work with, I guess I can see it. But it's still gonna need a head and cam change with a CR bump to get your effort's worth out of it, and you still have low end pistons.
If any more than that is wanted then I'd be looking to just pay more to get what you really want.
I wouldn't want to spend the $$ on AFR's for this kind of build. The AFR is capable of far more than the rest of the engine could support. These heads Straub is talking about would fit the build very well( price wise) I would think.