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Old 03-26-2010, 06:37 AM   #1 (permalink)
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408 stroker

i have a 408 stroker kit in my 351w and was wondering if the AFR 185cc SBF street/strip outlaw heads would be a good choice for me?
heres the link to gets the specs on the heads: Airflow Research 1387 - AFR 185cc SBF Street/Strip Outlaw Heads - Overview - SummitRacing.com

Last edited by fordzx5; 03-26-2010 at 06:44 AM.
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Old 03-26-2010, 03:38 PM   #2 (permalink)
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Re: 408 stroker

If you were set on going the AFR route 205's would be a better fit. Trick Flow Twisted Wedge 190cc FAC heads would also be a good fit.
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Old 04-08-2010, 04:38 PM   #3 (permalink)
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Re: 408 stroker

I think you need at least a 195 cc head, and thats for street driving and lots of torque. We just put some AFR 195's on a 383 SBC and they are working great for his high torque rock crawler/street vehicle. If you are going to go to the track and and want to see 6000RPM you need a 205cc head.
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Old 04-09-2010, 06:35 AM   #4 (permalink)
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Re: 408 stroker

I have 205's on my 408W and it is VERY strong with a lot of low end GRUNT....almost too much at times!!!
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Old 04-09-2010, 11:54 AM   #5 (permalink)
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Re: 408 stroker

AFR 185's are way too small for a 408w IMO. They have a similar cross section to a set of Trick Flow 170cc heads just for a comparison. AFR 205's are a better fit but if you are running a motor with a smaller bore (4.060 or less) then a set of Trick Flow Twisted Wedges would be a better fit because of the altered valve layout and reduced shrouding. Trick Flow FAC 190cc heads would be a good fit. Trick Flow 205 cnc twisted wedge heads would probably be the best fit but given their price point the FAC 190's are an attractive head that can support a 408w.

Not sure what you are doing for an intake but remember, the rpm ranges given for 351w based motors is for a 351 cid motor, not a 408w. The power band on a larger cubic inch motor will be lower; that 6500 max rpm power band has now just dropped to the low to mid 5000 rpm range, so be sure to be careful when selecting an intake given the power band you want to have.
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Old 08-15-2010, 03:42 PM   #6 (permalink)
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Re: 408 stroker

Im building a 408 stroker and i have a set of worldproduct windsor sr iron heads i was wondering if they would be good for the 10.1-1 comp or should i go with after aluminum heads. its going to be a street strip car.
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Old 08-15-2010, 09:49 PM   #7 (permalink)
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Re: 408 stroker

I was looking into a similar combo and AFR tech line pointed out that there is a big difference between the AFR 185 and the AFR 185 outlaw. The outlaw is supposed to be pretty great.

What power level are you going for? That will help dial in a better choice.

I recently had the regular 185 on a 347 and was making 480hp. So your 408 could easily go past 500 even with the 185 smallest AFR head.

BigJoe would also point out that the AFR has the best resale value compared to other brands.

Just my thoughts!

good luck.
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Old 08-16-2010, 10:44 AM   #8 (permalink)
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Re: 408 stroker

the 185 is too small. i have a 392W stroker with AFR 205 heads with tons of low end for everyday street driving and with the cam i have it pulls strong to 6300. go with the 205.
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Old 08-16-2010, 03:49 PM   #9 (permalink)
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Re: 408 stroker

Im looking for a 450 -500hp daily driver vehicle. I want to run a 11.40 at the least in the 1/4 mile. Im planning on keeping the fuel injection. 36lb 4pinnel injectors, Adjustable fuel pressure regulator, Edelbrock performer RPM2, AMF cam and power pipe, 75mm tb, 80mm pro-m massair meter, 1 3/4 bbk headers, 3inch xpipe, pypes vialator mufflers. 3.90gear ratio Hope thatll help me meet my mark but not to sure about the 4.10s just yet
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Old 08-16-2010, 04:40 PM   #10 (permalink)
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Re: 408 stroker

Quote:
Originally Posted by chris0786s View Post
Im looking for a 450 -500hp daily driver vehicle. I want to run a 11.40 at the least in the 1/4 mile. Im planning on keeping the fuel injection. 36lb 4pinnel injectors, Adjustable fuel pressure regulator, Edelbrock performer RPM2, AMF cam and power pipe, 75mm tb, 80mm pro-m massair meter, 1 3/4 bbk headers, 3inch xpipe, pypes vialator mufflers. 3.90gear ratio Hope thatll help me meet my mark but not to sure about the 4.10s just yet
the cam is gonna play a big part and i suggest a custom ground hyd roller. as for 1/4 mile times a lot of that will depend on YOUR driving skils like reaction time , what rpm to come off the line at and finding the shift points that will give you the fastest time and if you have a stick how fast you can shift it. that other part is having the car come off the line hooking up and not bogging the engine down. i have seen guys get blown away with that had more powerful cars but couldnt drive that good or the car didnt hook up. it takes more to turn a fast time than HP alone and it takes practice to learn how to turn those fast times. 11.40 is a really fast time to be shootin for in a daily driver and its gonna take more then 500 hp and a 3.90 gear and i can shift a ford 4 speed toploader way faster then an internal rail 5 or 6 speed. i'm not trying to be a know-it-all or smart alec but i have ben doing this since i got my first 66 mustang in 1973 and have learned some things the hard and expensive way and i wish we had had an internet and computers way back then so i could have gotten help. 1.75" long tube headers are good and i dont know anything about that fuel injection , i like holleys. i ahev ben told that 9.5:1 compression is that max with iron heads and pump gas , 10.5:1 compression with small combustion chamber (under 60cc) aluminum heads and pump gas. that larger the combustion the greater chance of detination and detination loves to break piston ring lands.

Last edited by shiftthis; 08-16-2010 at 04:47 PM.
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Old 08-20-2010, 11:20 AM   #11 (permalink)
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Re: 408 stroker

I too am in the process of building a 408 stroker using a 9.48 deck height 351w. I am using the 205 victor jr heads.
I am looking for low end grunt as the car is a daily driver. I have not ordered a cam yet.
what intake manifold is best suited for Vic jr heads & low end torque?
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Old 08-20-2010, 04:08 PM   #12 (permalink)
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Re: 408 stroker

Quote:
Originally Posted by derby87 View Post
I too am in the process of building a 408 stroker using a 9.48 deck height 351w. I am using the 205 victor jr heads.
I am looking for low end grunt as the car is a daily driver. I have not ordered a cam yet.
what intake manifold is best suited for Vic jr heads & low end torque?
edelbrock air gap , performer rpm, or if you can find one a 69-70 shelby-ford-cobra buddy bar intake. do not use an open plenum intake cause they are made for mid to high rpm range.
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Old 08-20-2010, 04:33 PM   #13 (permalink)
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Re: 408 stroker

Quote:
Originally Posted by shiftthis View Post
edelbrock air gap , performer rpm, or if you can find one a 69-70 shelby-ford-cobra buddy bar intake. do not use an open plenum intake cause they are made for mid to high rpm range.

Great, I already have a performer rpm on the 351w that's in the car. Just saved myself $200.00
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Old 11-17-2010, 02:45 PM   #14 (permalink)
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Re: 408 stroker

I have a 408 with Performer RPM 205 heads dual plane intake complete roller with a demon 750 double pumper crane cam. Works well
It's in a 64 Fairlane Sports Coupe
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Old 11-17-2010, 08:29 PM   #15 (permalink)
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Re: 408 stroker

Quote:
Originally Posted by derby87 View Post
I too am in the process of building a 408 stroker using a 9.48 deck height 351w. I am using the 205 victor jr heads.
I am looking for low end grunt as the car is a daily driver. I have not ordered a cam yet.
what intake manifold is best suited for Vic jr heads & low end torque?
I would say probably the air gap..It is actually designed for a stroker unlike the 302 based version which is pretty much just a copy of the rpm intake.....You may not need that much low end torque though unless its a rock crawler or something...
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