I've heard and read good things about these heads. Anyone here using these with good results (or bad)? Specifically, I was curious about the 290cc ovals. Thanks.

I don't think they are available yet even though they are listed in their catalog according to Mike Lewis (aka wolfplace here on TC).

I'm purchased a set of AFR 335s for my 540 90%street/ 10%strip. Livin' over here in Dart country and my engine builder pushing Darts or Brodix on me, I stuck it out and went with the AFRs. My engine builder had never seen a set since they were newly released and was very sceptical. Well, once he got them, he and the other guys in the shop went over them very closely and were very impressed with the quality. And when we went to dyno, even more impressed!! :D
I am sure when ovals are released, they will be worth the wait!! Talk to this guy about them.
Wolfplace (http://lewisracingengines.com) Great people to deal with and good prices

Yup awsome heads. Set I saw looked great. One of the fastest street driven cars here has them on his 502 (he run's 8's). Wish I didn't already have my Brodix heads so I could justify picking up a set.

Originally posted by 70SS540:
I'm purchased a set of AFR 335s for my 540 90%street/ 10%strip. Livin' over here in Dart country and my engine builder pushing Darts or Brodix on me, I stuck it out and went with the AFRs. My engine builder had never seen a set since they were newly released and was very sceptical. Well, once he got them, he and the other guys in the shop went over them very closely and were very impressed with the quality. And when we went to dyno, even more impressed!! :D
I am sure when ovals are released, they will be worth the wait!! Talk to this guy about them.
Wolfplace (http://lewisracingengines.com) Great people to deal with and good prices =

Thanks for the kind words Nick,, the Wolves say thanks too graemlins/beers.gif
Have you played with the Innovate LM1 yet?
==

wyatt,
Really a nice heads but Dave is correct the oval is not available & probably won't be for quite a while,
I promise to kick Tony in the leg at the PRI show about them :D (He is the brains behind the AFR BB head)
I almost get tired of telling people how efficient the AFR BB heads are, the low & mid numbers are outstanding.
People seem to get caught up in the advertised peak flow numbers at .600+ & in most cases on the street they don't mean squat.
If you are running a .650 gross lift cam where is the valve 90% of the time??
It ain't above .600 :D

You will find both AFR & Brodix being very honest with their flow numbers with Brodix being if anything conservative at times.

If you are looking for an Oval I would consider the new Brodix RaceRite with the CNC chamber option at this time. Really nice head & the exhaust is in the stock location

If you email me I can probably save you a few dollars on either ;)

Mike, Havent got to the LM-1 yet. Hopefully soon. Looking forward to playing with the new toy! :D
c ya, Nick

Thank you all for your replies. Mike, unfortunately, I'm not sure what I'm looking for yet. I have a set of '70 LS-6 heads, but I'm worried about CR and low end with them. The car will be mostly street, probably driving it every day for a while (how could I not?). So, it needs to be ok with 91 pump. Like a lot of guys, I'm looking for a good balance. I'll definitely be taking it to the strip though.

Not sure when the AFR BBC ovals will be out, but I have months before the car will be close to needing them.

Anyway, thanks for your help, and if you have any further advice, I'm all ears!

I know of a 548" pump gas motor that just made 672 RWHP through the mufflers with his new set of AFR 335's! And the neat part was it was made at 6200 rpm or so!

He recently freshened motor...new pistons, slightly more compression ( a hair over 11.0) new solid roller street cam, the AFR's and new intake (Edelbrock Victor Jr.)new headers and mufflers. This gained him over 100 rwhp over the previous professionally ported Brodix 2x/Holley Strip Dominator intake combo with a slightly smaller solid roller.

Overall very impressive what can be done with a CNC machine these days!

Another buddy just his set of 357's for a 540. We'll have back to back dyno tests soon comparing them to a professionally ported set of GM/Edelbrock rectangular port heads. Should be interesting!


JIM

I know what your talkin about!! Although I am running 12.5/1 compression, my AFR 335 equipped 540 made 830 hp @ 7000 at the crank and was still climbing by 6 hp per 100 rpms @6900! I did not spin it higher than 7000, but I should have.
Yet with the cam I got, the motor is very streetable. I drive it mostly on the street but do mix 110 octane in. The manners are no worse than my 9/1 454 .610 lift solid cammed that made about 500 h.p.
wyatt, how big a motor r u building? you may want to consider the 305 or 315 AFRs. In my opinion, if your gonna build it,you might as well make sick power!! You wont be disappointed! You should be able to easily make 700+ hp with gobs of low torque on a pump gas, valve train friendly big block with the right heads. good luck

well, it's a 454 as things stand now. had the opportunity to get a 468 at auction, but it ended up going with the rail it was in. i've got time to decide on the right setup, since the body work/paint, etc. will take 6 months or so (never can tell about body work). the AFRs are just so expensive! i've already admitted that this car is going to suck it out of me. and i'm still smiling about it. anyway, thanks for the advice. 700 hp?? wow. i can only imagine. not sure if i mentioned this, but it's going to be driven often...on the street. occasional stip time.

My 540 uses Brodix 2Xtras. After two years of street driving they actually tested a few CFM better than what Brodix claimed which backs up that they don't exaggerate their stuff. But even with a head that big, it wasn't flowing enough air to feed mine at upper rpms. It was dead above 6500 rpm.

There was a LOT of time spent on them on the flowbench working out valvejobs etc to get fantastic flow (now out there with the 357 AFR's) and within literally 3-4 numbers(NOT %) between the good and bad ports.

After head porting, a new cam and intake and everything else about the same, I ended up with one like the 70SS540 describes. It made same TQ, just a few hundred rpm higher, but at 7000 rpm it was up 231 HP!!! That's incredible. I ran it up to 7400+ rpm on the dyno and it too was still climbing. It was only dropping about 4-6 ft lbs per 100 rpm up there. It ended up with 825 HP on 93 octane pump gas. It's an 11.0 motor.

The point of this story is that I had to do some serious work to make mine perform up there and that ain't cheap. It's amazing that now we can spend some more up front and get a head out of the box that can run with some serious hand worked heads or maybe even do better. It's tough to swallow now, but in the long run the CNC deal is a good one whether its AFR, Brodix M2's or whoever.

BTW- Mike Lewis...I never got around to getting lifters from you..Comp cut me a deal.....but I did send Nick to you for his 357's! He got them in last Friday, so wait wasn't as long as he planned. Now if he gets them installed we'll see soon how well those big suckers do with his current 540 combo until he steps up to that 632!!

JIM

Hi Jim, What kind of car is the 548 in and has he had a chance to run it at the strip yet?

Hey Jim,
Thanks, I really appreciate it. I think he will be real pleased with the 357's, especially when he "upgrades" his engine :D
Kind of curious how they work on his combo as is,, a bit "unusual" ;)

Tell Nick I said Hi & thanks for trusting us with his purchase graemlins/beers.gif

Harold...

It's another "Vette Dude" in New Hampshire. He hangs out here sometimes too.

He's got it in a '67 Coupe with a G-force modified
Richmond 5 speed and Tom's differential stuff in the back. He came to visit in TX the other day to go to the races with me to try mine, but we got rained out. We were at the track with slicks on...just a little wet! He borrowed my helmet to take back with him to take a shot with his at a Vette/Viper shootout back home, but several issues popped up at the last minute and he couldn't make it. So considering weather back East, we may not see numbers for awhile. I was really hoping to see what that translated to in at least MPH numbers.

I'm going back with mine in two weeks.


Mike...yeah it ought to be fun to see what it does. I'm sure it will be a lot stronger than before and we'll know for sure the heads ain't holding him back!


JIM

Hi Jim, Nick "E" mailed me some time back about the AFR 357 Heads that i have but i still intend to use them on the Big motor (598) thats over in the corner of the garage. I think my son will notch the frame and put it in as soon as someone in his class beats him, which will probably be soon. The R & J Speedshop car people are working on a bigger motor and also a fella that lives up here near me is buying a Pat Musi built "565" to move up to the front of the class also (nearly $18,000). The big motors work real good. My son's friend has a 3480 lb. Camaro with a 593" BB that lost a cylinder at Mo-Kan and still ran 5.80 @ 121 (1/8 mile) on seven cylinders!

I'm the other "Vette Dude" w/ the pump gas 548" 67 and AFR 335 heads. I'm very impressed w/ the heads to say the least. As Jim alluded to, I have not taken it to the strip yet. I was planning to run at the local Vette-Viper shootout last month but got some feedback on my chassis dyno runs that suggested I was detonating above 5000 rpm and being cautious, did not run. Since then I've spoken w/ a tech at Dynojet who reviewed the graphs and doesn't think its detonation. Additionally the pulls were smooth (in spite of the wavy graphs) and no hint of any problem.

Season is over here. But I will run it next year.

BTW Jim's car is a beast!

Take care,

Mark

Dynojet results (http://temp.corvetteforum.net/classics/ml67//dyno_runs_sm.jpg)

ML67,

The dyno graph is a little hard to see, but it looks like you may still be a little lean for best power based on the A/F graphs.

Have you tried richening it up a little?

Dragracer,

Here's what I did for the runs

Run1: jets 84/84 total timing 36 7000rpm MSD chip
Run2: jets 86/86 total timing 36 6600 rpm chip
Run3: jets 86/86 total timing 34 6600 rpm chip

Runs 2 & 3 dropped the A/F to a hair over 13:1. I have since gone up to 88/88 jets and dropped timing back to 32. I'll retest next spring after coating headers and having old rockers rebuilt. Then its off to the drags.

Thanks,

Mark

And here's a few pics of the AFR 335 CNC heads. They really are a nice item.

AFR 335 intake port (http://temp.corvetteforum.net/classics/ml67//AFRintake.jpg) AFR 335 Exhaust port (http://temp.corvetteforum.net/classics/ml67//AFREx.jpg) AFR 335 chamber (http://temp.corvetteforum.net/classics/ml67//AFRchamber.jpg)

Originally posted by 70SS540:
I'm purchased a set of AFR 335s for my 540 90%street/ 10%strip. And when we went to dyno, even more impressed!! :D
70SS540,

Did you use an engine or chassis dyno? What did you pull? Could you post some details on your engine? Have you had a chance to run yours at the strip?

Thanks,

Mark

PS I enlarged the dyno graph in the earlier post.

Mike, any word on when the AFR 290cc ovals will be available? Thanks.

ML67,
I dynoed on an engine dyno. Did 12 pulls trying different intakes and carbs. I'd like to just paste the dyno sheet here, but unfortunally, I dont know how. :confused: Anyway, it made 830 hp at 7000 and was still climbing by 6 hp per 100 rpms at 6900. I should have spun it higher! The guys at AFR said it would have made at least mid 840s if I would have gone higher.
700 ft. lbs torque at around 6000-6200. Its a 540 with 335 AFR heads. 12.5/1 compression. Edelbrock Super Victor intake and 1050 Quick Fuel carb with 1 inch spacer. The cam is around .714 lift and 270/275 duration at .050. 112 lobe seperation.
I didnt get the car driveable till the end of summer and I still got some chassis tuning to do. Trying to get that power to the ground a little better. So I will not get to the track till next season. I probably put 300 miles on the street so far. Very very impressed. Awesome power, yet smooth. Any other questions, just ask. smile.gif
c ya, Nick
ps just a little tease, there was over 20 hp in one of the items listed above!

70SS540,

Your setup certainly likes to rev. Your actual peak may be upwards of 850 HP. What are you running for an exhaust system?

If you e-mail me the dyno sheet I can link it. Its easy to post once you have uploaded it to a website.

Hmmm, you could've gained over 20 HP at that level w/ minor tuning. I'll guess the 1" spacer did it.

Take care,

Mark

Originally posted by wyatt:
Mike, any word on when the AFR 290cc ovals will be available? Thanks. =
I wouldn't look for them before the middle of next year last I heard.
I will be sure to kick Tony in the leg for you next month as I will be seeing him at the PRI show :D
Tony is the guy that designed the heads & does all the head work at AFR.
Super people & a wealth of information on what works regarding cams, intakes etc. with these heads.

Thanks Mike. A good kick in the leg should make life better for all of us.

ML67,
Ok, since you took a shot at it, I'll tell you. It was the Super Victor CNC intake that gave me over 20 hp bolt on. But it needed the one inch spacer on top.I did 2 other intakes with the same spacer and once I put the Super Victor on, it jumped by like 27 hp! My buddies at the engine shop will be mad at me now. They consider that stuff classified top secret !! Ha! smile.gif
Oh and the exaust in the Chevelle is Lemon's Headers 2 1/8 stepped to 2 1/4 to a 4 inch collector then 3 1/2 inch pipe to Flowmaster 30 series racing mufflers. Those then dump in front of the axle. I didnt dyno with those headers since they were not delivered in time for the dyno session.
Ok, now that I told you everything, lets hear about that I presume 67! graemlins/beers.gif c ya, Nick

70SS540, what were the other intakes you tried ?

69 Ratt Vette,
The other intakes were the Brodix single plane and the Dart single plane. Those were not cnc ported and were $300 cheaper than the Super Victor. $300 for 27 hp? hell yea!
I already had a Dart intake for the motor, but the guys at AFR to me to dump it in favor of the Super Victor CNC. They told me it was worth over 20 hp.
c ya , Nick

Originally posted by 70SS540:

Ok, now that I told you everything, lets hear about that I presume 67! graemlins/beers.gif c ya, Nick I've heard good things about the CNC Super Victor. Looks like it complimented your setup very nicely. It would have been interesting to see how ported Brodix and Dart intakes compared. Thanks for sharing.

OK mine is a 67 Corvette coupe w/ RG 5-speed and 3.08 Tom's IRS.
Mark IV short deck Bow Tie. 11.2:1 CR
Comp roller 266/272 @ .050 .718"/.688" valve lift
112 LSA installed 110 ICL
Vic Jr 4150 ported intake w/ milled carb flange for hood clearance(Bernard Mondello)
Functional L88 cold air hood
Carb Shop HP 1000 4150 carburetor
Custom Tubes 2 1/8" headers 30" equal length
3 1/2" collectors into 3 1/2" pipes and 3 1/2" in/out Borla XR-1 oval mufflers

And lots of fun on the street. I put over 3K miles on it this summer. Not much time left before I put it up for the winter. Already can't wait for spring...

Take care,

Mark

Thanks