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Author
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Topic: Victor jr.s vs AFR 205?
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Dynoram
Journeyman Posts: 51
From: ford country
Registered: May 2003
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posted 10-17-2003 04:39 PM
   
hey fellas well almost time to build a new piece for the 65 stang (331 or bigger) and have my choice of cylinder heads narrowed down to victor jr's or afr 205. So far it seems the afr 205 will out perform out the box but vic jr's can be reworked to amazing things. Does anyone know where i can get a flow sheet for the stock victor jr's? And as always would like to hear your opinions.
jerry
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stroker man
Gearhead Posts: 332
From: Denville NJ USA
Registered: Mar 2002
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posted 10-17-2003 08:39 PM
i would go with the AFR 185's it will keep the power band down lower in the rpm range then the 205's, unless you have high stall converter and gears, 205's work good in big strokers, vic jr's are good also.i have roush 200's in my 408w, flows [email protected] lift.
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JCQuinn@work
Gearhead Posts: 899
From: Lakewood, CO, USA
Registered: Jun 2001
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posted 10-17-2003 09:36 PM
Edelbrock has flow numbers for their heads on their website.Is it a class racing motor, a bracket racing motor, or a hot street motor? John
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CHIPSBAD67
Gearhead Posts: 396
From: LOU,KY;USA
Registered: Sep 2003
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posted 10-17-2003 10:24 PM
the 205 will outflow the victor jr.s. both a great pieces but i think the 205's will actually flow too much for your 331 or 347 unless you plan on spinning it very hard which means a premium on the short block and not the most street friendly...although certainly wicked track times. id say go with the 185's or vic jr's out of the box and you'll be very happy. i have the 165's on my 306 and am very happy. i have an experience with afr and its not uncommon with other aftermarket heads....buying them assembled is a mistake. i found that the rocker studs, valve springs, and guide plates were all well below the quality of the casting they were attached to. a recent article in mm&ff says the valvetrain is heavy in the afrs. please dont let this keep you from the afr head, the casting is off the hook out of the box. just be sure to buy them bare and get the good hardware when youve selected your cam. the rocker studs cost me big when one broke and all i was running was a little f-303 cam. the guide plates dont let you center the rockers and the springs cant handle much of a cam. good luck, this is one of the most important decisions you'll make when you build your motor. ------------------
306, 4speed, 4.11's....best 1/8 mile 7.58 at 92mph with 1.72 60ft. PUMP GAS/NO ADDERS/STREET TIRES
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n2oMike
Gearhead Posts: 2694
From: Spencer, WV
Registered: Jan 2001
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posted 10-17-2003 11:13 PM
If the heads are purchased directly from AFR, they can be set up however you want.There is a choice of springs, retainers, etc. Most of these are fairly low cost options... you've just got to call and ask. Oh, that MMFF article stated AFR now uses lighter valvetrain parts on those heads. The first set of heads I purchased from them were a set of 195cc small chevy units. They seemed to be top notch all the way through. This was around 10 years ago or more... well before they got in the Ford business, and well before their business grew to the size it is now. The CNC ridges were much finer, and the valves seems to be top quality. The exhaust valves even had the the front corner of their heads rounded off. (supposed to help flow a few cfm) Now, the ridges aren't quite so close together, but the ports are still shaped just fine... The CNC machine is just set up to cut the heads faster. Still, by the time a pair of competitors heads were purchased and a CNC porting business was paid to do equally good port work... the price would be WAY higher than what AFR charges! AFR heads simply work. You order them to your specs, take em' out of the bag, install them on the engine... and you're off to the races! It's so easy, it almost seems like it's unfair. (to those of us who've spent untold hours with a die grinder breathing metal and sanding roll dust)  Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220 [This message has been edited by n2oMike (edited 10-17-2003).]
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CHIPSBAD67
Gearhead Posts: 396
From: LOU,KY;USA
Registered: Sep 2003
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posted 10-17-2003 11:35 PM
mike, they sure didnt have any options a couple years ago. guess it took a lot of chewed up valvtrain and customers like me doing some chewing to make them wake up. the rocker arm studs i got were chineese hardware grade, not arp, which is what should've been on a $1500 set of heads. not only that but they were way too short for comp pro magnum rockers with their ample trunions, which is the very rocker afr recomends when you buy a set. ive noticed the prices are lower now too. you might wanna price their custom build it how you want it then compare to getting the stuff yourself. i bet trick flow took a big hit when word got out about their valve guides wearing out on those twisted wedge heads. the old track heats were better. notice how they brought the track heat heads back? hey mike, i got those jet extentions but the track got rained out tonight, now i gotta wait another week.------------------
306, 4speed, 4.11's....best 1/8 mile 7.58 at 92mph with 1.72 60ft. PUMP GAS/NO ADDERS/STREET TIRES
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Dynoram
Journeyman Posts: 51
From: ford country
Registered: May 2003
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posted 10-18-2003 04:28 PM
the engine will be spun just over 7000 rpm and will be sitting in a sportsman block with a killer girdle set up.It will be driven on the street as well the track. I also have heard about the valve train on the afrs mostly complaints about the springs. Is it also true that there exhaust bolt holes are not heli coiled? Man i never realized there were so many affordable options in the cylinder head world nowadays the more i research the more ideas i keep getting [This message has been edited by Dynoram (edited 10-18-2003).] [This message has been edited by Dynoram (edited 10-18-2003).]
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CHIPSBAD67
Gearhead Posts: 396
From: LOU,KY;USA
Registered: Sep 2003
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posted 10-19-2003 12:52 AM
on my set the rocker studs are helicoiled but im not sure about the exaust holes...never paid close attention to them. i think the plug holes are helicoiled too, wonder why they wouldnt do the exaust though if its that way.------------------
306, 4speed, 4.11's....best 1/8 mile 7.58 at 92mph with 1.72 60ft. PUMP GAS/NO ADDERS/STREET TIRES
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RADRIDE
Gearhead Posts: 305
From: Va.Beach, Va.
Registered: Aug 2002
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posted 10-19-2003 07:57 PM
MM&FF did articles on all the different alum heads on the same short block and the AFRs kicked butt!! I have the 185s right out of box on my 289 and picked up over 95 rwhp.I also changed headers,intake,and carb.I am putting a 331 plan together and thats when ill have some work done to the heads to make them really flow. I also upgraded valves and springs to go with my Comp 294S.I run the full alum roller from Comp with no problem.
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Dubz
Gearhead Posts: 1890
From: Manitoba Canada
Registered: Oct 2002
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posted 10-19-2003 08:52 PM
would the 205's be too big for a 351W??
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