AFR or Allpro heads
I ruin the end of films...
iTrader: (2)
Joined: Nov 2002
Posts: 1,545
Likes: 0
From: Taking back some video tapes
Originally Posted by taufern
and i believe the all pro flow numbers are "as cast" with no cnc work done. so you could expect a **** ton more flow when you add in cnc work. take flow numbers for an as cast 180cc AFR head and compare. then we're talking apples and apples.
Nate
Nate
but if anyone on here were really that competitive, they wouldn't have time to hang out on an internet chat board!
Most 4th gen guys are so in love with AFR's stuff because that's all they've ever had for an option. Hell, I've got a set of big ones on my car (in hindsight, I should've put a set of 18X's on, but what can ya do?). What other options have there been? Canfield? I'd have a better chance of finding Tupac alive than getting a set of those. Trick Flows? Not a big improvement over factory castings. Eddies? Nah, I'll pass.
sad when the factory castings ended up being so good that the aftermarket world is having a tough time coming up with offerings that really make it worth while... the afr and allpro are the only real options at this point... the afr's are a great bolt on head, and the allpro is looking to be a great "racer" head, with possibilities that are really open to the end user.
I'm dying to see what a set of allpro's set up for n/a are capable of, but noone's done a set yet as far as I know. Hell, not too many people have even done them at all at this point.
I'm dying to see what a set of allpro's set up for n/a are capable of, but noone's done a set yet as far as I know. Hell, not too many people have even done them at all at this point.
I ruin the end of films...
iTrader: (2)
Joined: Nov 2002
Posts: 1,545
Likes: 0
From: Taking back some video tapes
Originally Posted by JL ws-6
sad when the factory castings ended up being so good that the aftermarket world is having a tough time coming up with offerings that really make it worth while... the afr and allpro are the only real options at this point... the afr's are a great bolt on head, and the allpro is looking to be a great "racer" head, with possibilities that are really open to the end user.
I forgot to add ET Performance's heads that are supposed to be out this year. I wanted to stop and talk to Cary @ WFC, but figured I'd be strung up for talking Chevy heads at a Ford event.
Staging Lane
Joined: Dec 2002
Posts: 90
Likes: 0
From: Houston - Clear Lake
Originally Posted by KissMySSo1
Well theres a flow chart right there. I Love how people say ALL PRO's hand down when they have probably never seen a set in there life. AFR obviously flows alot more out of the box. But there is alot more porting you can do on the AFR's then just the factory CNC. 400+CFM can be easily obtained with some more porting. No one knows anything about the ALL PRO's yet
400+ CFM is not easy to obtain. No one is anywhere close to it.
Originally Posted by XIII
My grandpa used to say its better to be quiet and allow people to think you are stupid than open your mouth and prove them right.
400 isn't gonna be easy regardless what head it is... it's still a small block head.
The all pro's with the possibilities, would be a more likly candidate to being able to hit that # then the afr's simply beacuse of the added mat'l on the top side of the head.
The all pro's with the possibilities, would be a more likly candidate to being able to hit that # then the afr's simply beacuse of the added mat'l on the top side of the head.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Launching!
Joined: Mar 2004
Posts: 222
Likes: 0
From: Ontario Canada
Some pics I took of All Pros we got delivered on Wednesday 
http://usera.imagecave.com/camarojoe/AllPro/
http://usera.imagecave.com/camarojoe/AllPro/
What are the heads going on? Will you run them as cast or are they going to be ported? Also why did you chose those over the AFR's? Sorry for all the questions. I am ready to order my heads and I am still trying to decide which to buy.
I ruin the end of films...
iTrader: (2)
Joined: Nov 2002
Posts: 1,545
Likes: 0
From: Taking back some video tapes
Originally Posted by gator's 99TA
mongoose. my canfield lt1 heads have a core shift issue. epoxy is holding teh SOB together at this point 
larry meaux did all he could with them.
larry meaux did all he could with them.
400cfm is a LOT of air. I've seen a set of Little Chiefs pull those numbers and a set of 2.2s come real close, but NEVER a 15* head, let alone a production head.
I have had my All Pros for a few months now . they look bitchin sittin on top my tool box. I gave them to a friend to do the finish work on them valve jobs clean up the ports stuff like that.Hopefully I'll have some numbers mid next week... When your gettin something done for free you cant be to pushy..
11 & 7 Second Clubs
Joined: Oct 2004
Posts: 1,299
Likes: 0
From: Motorhome, Freeways, Truckstops, Pits
AFR's here, but we are talking about two peas in a pod, as they say in the South.
Originally Posted by 1997 vet
I am looking at getting a set of heads for my engine and would like to know who is using Afr or Allpro heads. Which is better and why?
I decided on the All Pro heads. Looking at the two heads the All Pro heads are a much stronger casting. Look at the part where the rockers mount. I think if I were going to run a N/A engine then I would have went with the AFR's due to them being cnc'd for about the same price.
400 cfm
Originally Posted by XIII
My grandpa used to say its better to be quiet and allow people to think you are stupid than open your mouth and prove them right.
400+ CFM is not easy to obtain. No one is anywhere close to it.
400+ CFM is not easy to obtain. No one is anywhere close to it.
We are already there with our cylinder head.
In race trim our Cathederal port head is 403 cfm@ .750.
2.150 intake valve on a 4.125 bore. 50 degree seat.
2.100 on a 4.00 bore was 376@.700 45 degree seat 265cc
2.125 valve 4.100 bore was 386@.700 45 degree seat 266cc 357@.550
1.570 exhaust valve 282 @ .800 with a 1 7/8 pipe. 248 no pipe.
Those are impressive #'s for sure. How do the heads flow on a stock bore.... or are these heads only for large CI applications? Other then wanting the absolute best head on the market.. I really don't have my heart set on anyting yet.
Also, your heads... if used on a stock CI motor, what kind of cam are you reccommending.. how big is needed to maximize teh flow rates of the heads? Port size for smaller CI any different?
Also, your heads... if used on a stock CI motor, what kind of cam are you reccommending.. how big is needed to maximize teh flow rates of the heads? Port size for smaller CI any different?