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What are your thoughts on afr heads?  
Eldabo
User | Posts: 93 | Joined: 08/04
Posted: 01/20/05
06:35 PM

I have the 210s comming and would like to see what people think of them, and what combos they are running with these heads.


Dave

 

 
oldBogie
Guru | Posts: 1195 | Joined: 08/03
Posted: 01/21/05
12:02 PM

Fine on a race engine, miserable on the street without a lot of gears to get some action going in the ports.


Bogie

 

 
GibTG
Moderator | Posts: 1358 | Joined: 10/03
Posted: 01/21/05
03:03 PM

i agree with bogie, a head like that sounds like overkill for your combination of a stock 350 crate engine, on your tall geared low stall camino











 

                                                                                      ~Gibs

 

 
Eldabo
User | Posts: 93 | Joined: 08/04
Posted: 01/23/05
08:38 PM

have you read the rest of the combo?


Dave

 

 
oldBogie
Guru | Posts: 1195 | Joined: 08/03
Posted: 01/24/05
09:37 AM

Yeah, he's got too small of an engine, with too much camshaft, and inadaquate rear gears. It looks like he's trying to make a street/strip machine that fast and gets reasonable fuel milage. I rather doubt this set up will make him happy in either place. The 3000/3500 stall converter is another issue, while this will let the engine spin up for great breakaway out the hole, this is going to cost an arm and a leg in fuel when he runs on the street and is going to require some serious external transmission oil cooler to keep from making toast out of the gear box.


With this combo, I'd drop back to a 180 or 190/195 AFR, kick the compression up, and lower the stall to 2200-2500 revs. Or slam some serious gears in the rear. Putting some 4.11s or 4.56s would provide the time slips he's looking for and would work great with the motor and converter combination at the strip. On the street the gas milage probably wouldn't be all that different from his proposed combination but the car would run real sharp at cruising speeds.


Building a 700R4 or a non-electronic 4L60 would provide a better compromise on the street as he could still have some rasty rear gears and get reasonable cruise revs in 4th. If you could lay your hands on a high stall lock-up converter, you could have your cake and eat it too with this combo. His engine and chassis set-up would be perfect for a T-56, and you get rid of the converter stall issues and all the other problems that come with an automatic behind a hot engine.


One of the big lessons to learned; is that trying to save money with hot engine mated to the transmission you have, especially automatics, just delays the inevitable expenditure for the right combination of components. Or result in you waking away from it when you discover it's a lousy, unlivable combination and you're out of money to make any additional changes.


A street/strip car is always a tough set of compromises between what you want, what you find you're willing to live with, and how much money you can afford to put into the project.


I wish him luck in getting this sorted out!


Bogie





Edited 1/25/2005 9:17 am by oldBogie  

 
Eldabo
User | Posts: 93 | Joined: 08/04
Posted: 01/31/05
08:39 PM

I never said I wanted gas milage it it just somthing to play with and go fast,I just read a story that said this combo made over 500 hp and it was writen buy chevy high now what do you have to say about that?


Im not trying to rude but you all really tryed to shut me down on this and I think you all are wrong ,,,,I did a lot of research and I know it will work and work well. If i new how to post the link I would .


 


 


Dave

 

 
GibTG
Moderator | Posts: 1358 | Joined: 10/03
Posted: 01/31/05
09:38 PM










919.6 in reply to 919.5 

I never said I wanted gas milage it it just somthing to play with and go fast,I just read a story that said this combo made over 500 hp and it was writen buy chevy high now what do you have to say about that?


okay now your really sounding like you have no previous knowledge at all, even if this combo did make 500 HP, where did it make it at, where was the torque peak also, was this spread too little for a auto tranny 3 spd car? does its power curve match well to your camino's RPM range down the track? I dont even recall CHP doing a article such as this one but stabbing a big cam and AFR heads on a mild crate 350 might make some impressive HP #'s but it might not nessacarily show great times on your setup, especially at a eighth mile track where acceleration is even more key to ET's than a quarter mile track, look at CHP's Impersonator 406, i know this combo doesnt duplicate yours but you can still point out some trends. AFR's smallest cc runner head, the 180, made less torque compared to vortec heads until after 4000 RPM's, since a 350 has even less displacement the 180 cc could assume no torque gain until possibly 4500 RPM's, not to mention you have even a larger runner head, a much larger runner, so then possibly these heads might not show a torque gain till 5500 RPM's, also these heads will push the peaks higher, requiring more stall, lower gears, and a combo more suited to narrow band operating engine overall and you start getting away from driveability and street car values, with steady higher RPM use wear will increase and time between overhauls will decrease, low end response will be lost for daily cruising, ect., ect.


can i just ask, are you really as old as you say you are, if you are i feel sorry for your wife, as you are impossible to deal with. This combo of yours has been on these boards for months and every suggestion you get you say is wrong or you just dont plain listen to it, you might as not well be asking for help, and learning what is going to go good with your combo the hard way, by track flogging


P.S. i dont think Bogie is "wrong" and it doesnt take a rocket scientist to figure out that i believe he knows what he is talking about and has the credentials to give great help to the people on this board











 


                                                                                      ~Gibs






Edited 1/31/2005 9:58 pm by GibTG  

 
Eldabo
User | Posts: 93 | Joined: 08/04
Posted: 02/01/05
05:33 AM

 


 
Eldabo
User | Posts: 93 | Joined: 08/04
Posted: 02/01/05
05:37 AM

 


 
Eldabo
User | Posts: 93 | Joined: 08/04
Posted: 02/01/05
05:39 AM

 


 
Eldabo
User | Posts: 93 | Joined: 08/04
Posted: 02/01/05
05:41 AM

Sorry wrong mag but hey read the story and then start doging My motor is at the michine shop now getting the same build


Dave

 

 
Eldabo
User | Posts: 93 | Joined: 08/04
Posted: 02/01/05
07:15 PM

I know some one has had a look at the story ..come on !!!!Tell me what you think now that I have a story to back Me up>>>>


 


Dave

 

 
GibTG
Moderator | Posts: 1358 | Joined: 10/03
Posted: 02/01/05
07:57 PM

i say your story is quite incomplete as it doesnt give a parts list or any specs











 

                                                                                      ~Gibs

 

 
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