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Topic Review (Newest First)
01-08-2013 06:02 PM
vinniekq2 are you looking at the AFRs out of the box flow numbers? They are C N C ported only. My dart 227s were C N C ported then hand tweaked before the build. I gained 9 CFM over advertised out of the box flow.

If you are using pump gas you will need 400 cfm flow and still need a fair bit of boost
01-08-2013 05:47 PM
Project89
Quote:
Originally Posted by vinniekq2 View Post
use the correct head for the application.If 245 AFR heads are what you need then use them.You know what happens if you use heads that are too large
while the afr 245's will work great im sure i could get 1,700 hp out of them, i was just looking for other options and cost.

say it takes 30 psi of boost to make 1,700 hp with the afrs , another head might only take 22psi to make 1,700 hp


its really not about picking a set of heads alone , i need to pick a set of heads and turbochargers that will be most efficiant together at my horse power goal

ive been going over alot of heads and turbo compressor maps latley trying to come up with the most efficiant combination of parts to put down 1,500 hp reliably
01-08-2013 01:39 PM
vinniekq2 use the correct head for the application.If 245 AFR heads are what you need then use them.You know what happens if you use heads that are too large
01-08-2013 01:32 PM
Project89
Quote:
Originally Posted by oldbogie View Post
Strickly race parts, very good track stuff where the rules allow them. Really intended for direct alcohol injection engines that never see duty off the race track, is that what you need them for?

Bogie

no its not this car im building is going to see alot of street duty including 300 mile trips to the drag strips and salt flats i refuse to give up the ability to take the car out on a nice day when i want to
more then likley ill stick with the afr 245s as they will make the power im after , but as most of us i was being open to other options to make the power easier
01-07-2013 04:32 PM
oldbogie
Quote:
Originally Posted by Project89 View Post
fellow board member follwing my 427ci sb build on the camaro forums posted up a link to these guys and said if money allows i should give them a call , as they have heads that flow well over 400 cfm.

i was originally going to go with a set of afr 245 heads on my build but after looking at some of allpros stuff it seems like they may be the way to go.

problem is i cant find anyone who has used there stuff


anyways heres the link
All Pro Aluminum Cylinder Heads, Inc.

im hoping on of u guys knows there stuff and can give me some feedback on there heads
Strickly race parts, very good track stuff where the rules allow them. Really intended for direct alcohol injection engines that never see duty off the race track, is that what you need them for?

Bogie
01-06-2013 06:38 PM
vinniekq2 Edelbrock 15 Deg CNC RFD Alum over 400 CFM
Dart Little Chief 11 Deg Ported MBE Alum
contact afr/dart/edelbrock direct. they make a few heads that will support mega power.18 degree down to 11 degree. All are special race products all pro heads also,they all make race heads.You need to talk to the techs to make sure the parts will live in your conditions.I see 2,000 HP possible,,,,not sure how .8 lift cams work with turbos
01-06-2013 06:25 PM
Project89 link? they are not listed on afrs site
01-06-2013 05:51 PM
vinniekq2 AFR 325 13.5 Deg Alum
398/253
63.6%
101/127
300/375
.647/.576
438/276
63%
112/138
330/409
.61/.539
@.6
@.7
01-06-2013 05:37 PM
Project89
Quote:
Originally Posted by vinniekq2 View Post
the afr 325 cc SMALL BLOCK HEADS and sb2 series flow around the 400 cfm mark
325 cc AFRs are not 23 degree heads.
cannot find them on afrs site anywere just a bbc 325cc head
Air Flow Research
01-06-2013 05:20 PM
vinniekq2 the afr 325 cc SMALL BLOCK HEADS and sb2 series flow around the 400 cfm mark
325 cc AFRs are not 23 degree heads.
01-06-2013 05:07 PM
Project89
Quote:
Originally Posted by vinniekq2 View Post
AFR 325s? or SB2.2
afr 325's are for big blocks the sb2.2 heads are a lil pricey once u complete them the afrs are 2,600 to my door, though anyway i look at it im going to have to run a sheetmetal manifold as ill need 2 injectors per cyl specially if i run this thing on e85 or methanol at the track/salt flats


we did build a 69 camaro with a sb2.2 and twin 70 mm turbos for a customer a few years back that car was flat out sick


anyone happen to have general flow numbers on the sb2.2 heads?
01-06-2013 12:09 AM
vinniekq2 AFR 325s? or SB2.2
01-05-2013 11:55 PM
Project89
Quote:
Originally Posted by vinniekq2 View Post
any rule that says you have to use 23 degree heads?
Are you building your own headers? did you say 76 mm turbos?
im not building the engine/car to any class rules since outlaw x275 isnt comming to our track so i can run any head i want to

yes i will be building my own headers

right now im eyeing a set of 72 or 76 mm turbos but that could change as the engine comes together more. either pair of turbos will push me to 1,500+hp but if head choice changes the turbo choice may change as well


right now i have dart iron eagle block
crower crank
promod rods
i did not buy pistons yet cause i wasnt sure what head i was going with
once i have a set of heads on the way ill order pistons
01-05-2013 10:56 PM
vinniekq2 any rule that says you have to use 23 degree heads?
Are you building your own headers? did you say 76 mm turbos?
01-05-2013 10:45 PM
Project89
Quote:
Originally Posted by vinniekq2 View Post
there are a few heads that flow 400 plus CFM. They are not usually mentioned here.Who needs them? 900 hp is a lot of horses
well afr 245s witht he turbos i have picked out will make 1500hp prety darn easily.

but if i can pick up a different set of heads and make the same power at less boost why not.besdies the fact ir would prolly make more power off boost

my build is geared at the outlaw x275 racing class but since were not getting it at our local track i have no rules to follow so sinc eim still in the middle of building the engine i may as well get the best stuff i can afford

the afrs will get the job done for sure but why not go for something a lil better if possible

btw this is the flow chart on the afr 245's
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