I've been pondering this lately. Did they dyno back-to-back flat tappet versus hydraulic roller? Results?

Thanks,
Mike

 

But to answer the original question. . .

I'd go with the 210's. I know AFR's website shows the 190's to be reasonably close to the 210's in flow, BUT THEY AREN'T.

We've flowed several sets of 190's at Thunder Racing and found them to actually be in the 233 - 240 cfm range. All of the 210's and 220's flowed from 280 - 295 depending on porting options. The Race Ready 210's seem to the the best all around head.

My last car had a combo similar to yours: '89 Firebird, 11.5/1 383, 5.7 rods, AFR 210 Race Ready's (box stock), GM 847 cam (234/242), Victor Jr., AED Holley 750, SLP shorty headers, 700R4, Vigilante 3200, 3.73's, BFG Drag Radials. The best pass was 11.09 at 122.7 mph at full weight, pump gas, radial tires.

Idle was a little choppy, but the mid-range torque was awesome. I shifted at ~6200, so you didn't have to rev the pee out of it, either. It was never dyno'd, but I would have expected ~430 rwhp through the auto.

Mike

 

Mike those numbers where piped.. they flowed 219 on the exhaust side when phil flowed them...

I gained 20cfm almost all around on the intake and 4cfms all around on the exhaust... i did ceramic coat everything on those heads.

 

As a matter of fact i would go the competition...

 

AFR is redesigning the SBC line; they have finished the 195 SBC and expect to release them by the end of the year. As for the 195 LTx heads, I don't know anything about them, but you should call AFR to see what their plans are. It might be reason enough to wait another six months.

 

WOW!!!!!!! what are their expectations??? 18º heads?

 

The redesign is for the 23 degree heads (I'm don't know if that includes the 215 RR). Tony Mamo (one of AFR's head designers) said that the new heads should have much improved flow over the old, but they won't flow as well as the AFR LSx heads. Nevertheless, the new AFR SBC will close the gap. You should call AFR and ask for Tony--he will be better able to answer your questions.

I am planning to build a new motor for my 1969 Camaro. My most recent plan was to build a stroked LS1/6 with the new AFR heads. But after reading some of the builds here with the AFR 215 RR, GM 15 degree heads, sb2.2 heads, and of course--my favorite soap opera--the Dominion guys, I'm reconsidering the SBC platform. Either way, each platform will require customization, fabrication, and a lot of money.

I'd also like to say that I'm really impressed by the tech and in particular, the aggressive builds on this board. Maybe I am reading the wrong boards, but it seems like there are more guys on this board who are testing the performance limits of the daily-drivable, NA SBC/LT1. On other boards, as soon as a guy posts about his desire to build a 600+hp NA street-worthy SBC, you have a couple guys immediately reply that that's not realistic. On this board, these engines get built. Again, maybe I'm not reading the right boards. Any suggestions?

 

Do a search about mindgame. His engine did 567rwhp N/A

 

That's sounds great! You purchased the heads from TEA and sent them to Phil(Advance Induction) and picked up 20cfm across the board. Any reason you didn't have TEA do the heads? When you mention coatings was that just the chambers and valves? Any pics?

Thanks

 

TEA didn't want to touch them.. period.. no matter how many times i asked.. they said no.

If you want TEA to do them you have to buy them bare.

 

What about some 227 AFR(no: no special valve train,just right guide plates) Comp ported with one of Bret's intakes.A 246@50 on a 108 LSA 108ICL 722 I- 686 E With 1.8 rockers=690+FWHP
Look out.

 

AFR 227 that dont require special valve train?

I was under the belief they require offset rockers, am I wrong?

 

Nope. The RR will sit at an angle to the head but everything will clear.(liKe TFS on a small block F***)Call AFR.

 

Black95,

You're probably thinking about the AFR 215's.

Most of the raised runner heads (AFR 215, Brodix 10X, etc) require shafts or offset rockers. Suprisingly enough, some of the big heads like the AFR 227 and Dart Pro1 227 & 230 don't. They get the flow by being big, not by moving things around and giving the air a straighter shot.

Galopin,

Some gearheads are still living in the stone ages too. With every passing year there are more guys laying down big numbers. With the availability and pricing of big Gen1 small blocks, 600fwhp is just so common place that guys don't even get excited anymore. Then look at all the great cylinder heads out there for the Gen1. The $ky is the limit.

-Mindgame

 

I second the notion that TEA uses a pipe when flowing heads. They told me that my LT4's flowed more than 250 at the exhaust. A buddy of mine hand ported a different set of LT4's and the exhaust ports on the set he did were bigger than mine and flowed in the 215 area.