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Old 07-05-2004, 12:49 AM   #1 (permalink)
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cam for 347 stroker

ok i have posted on here a few times and got great responses so here i go again...

i'm building my first engine, 302 stroked to 347

i have keithblack pistons (flat top)

AFR 205 race heads

holley 750 carb, not sure which model can look it up if needed

JE file fit rings

and am planning on an edelbrock victor jr. intake

i'm going to have to do the math to find out what my compression ration will be i bought the fel-pro(FEL-KS2337 off of summit) and the block has yet to be decked. the heads are 58cc if some one wants to help me out with the compression ratio

a main stud girdle

i am having 3.73 gears

unsure of which cam, and cam and toque converter go together from what i gather. so a new torque converter is in order. so what size would help on that, i was thinking lie 2500-2800. the car will see mostly street, see some track, the block is 86+ so roller cam, and i think i may try to go for a sleeper, keep the exhaust quite, may-be the engine smooth idiling if possible, if not open headers and let people know i'm coming, i just realy want a honda eater. the cars title says 2300 pnds don't know how accurate that is? also wouldn't mind 12's in the 1/4 or lower
thanx


[ This Message was edited by: hurri10209 on 7/5/04 12:50pm ]

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Old 07-05-2004, 01:01 AM   #2 (permalink)
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cam for 347 stroker

Humm, I think for your goal of a sleeper with quiet exhaust and low stall, I'd work on the bottom end power and use a dual plane rpm airgap and get a custom cam......Why the 205's on a 347 if you only want 12's?
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Old 07-05-2004, 08:45 AM   #3 (permalink)
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cam for 347 stroker

I with the other guys the afr 205 are TOO BIG.the 185's will work good with your 347 or you could try some twisted wedge heads.also i would use a rpm air gap intake.on a cam i would ge one custom made.Give cam research a call on a cam.303-782-0022 or www.camresearchcorp.com. i use cam research camshafts in both my race and street car.
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Old 07-05-2004, 12:52 PM   #4 (permalink)
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cam for 347 stroker

I'm running the standard 170cc TrickFlow heads with a small cam 230/236 @ .050, 110 LSA. It has good low end torque and all the power I can use for a street car. I can run mid 12's @ 110 mph at the strip with an easy launch and shifting at only 5200 rpms. I have pushed it well into the 11's by being more agressive and using sticky tires.
I think the 205 heads are overkill unless you allow the engine to rev. I would recommend a high lift solid cam (.600-.625) in the 240-250 duration range at least, add Victor Jr. and 1-3/4" headers, with no less than 3000 stall and free flowing exhaust. Should run low 11's high 10's. If that sounds like too much then you need to get 185 heads instead.
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Old 07-05-2004, 07:04 PM   #5 (permalink)
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cam for 347 stroker

ok the sleeper was just a thought, think it would be nice 12's or lower. i got the 205's because i asked a guy that said he was running them on the street how they were and he said he liked them so i bought them. so i should go with the air gap intake? and someone told me above 2800 sthall speed would not be good on the street. any one have any input on this? and i'd preffer if i could do a hydrolic cam that way i don't have to continualy tighten my rocker arms. if solid is that big of a deal i'll make do and do what i've got to do.
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Old 07-05-2004, 07:36 PM   #6 (permalink)
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cam for 347 stroker

What kind of car is this? 2300 lbs? It's not a mustang...it's too light.

You've got a mess there. Heads too big plus a single plane plus a 2800 stall converter...just making a bad situation worse...major dud below 3500-4000 rpm. That combo is all wrong. If this was strickly a race car it would be better but still the stall speed is too low. Since you said mostly street with some strip try this:

AFR 165 or 185 heads, weiand stealth or edelbrock rpm manifold, a high lift moderate duration roller cam like a 281HR Comp, and 9.5:1 compression.

As far as the stall speed of the converter, figure out what your freeway cruise rpm is and get a converter that stalls just at or below this rpm. Given that you said 3.73 gears, something around 2500-3000 stall will do.
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Old 07-06-2004, 12:20 AM   #7 (permalink)
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cam for 347 stroker

I am sure you will find a buyer for the 205's,after you stop
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Old 07-06-2004, 07:10 AM   #8 (permalink)
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BLKFRD............AWSOME looking car !
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Old 07-07-2004, 11:43 AM   #9 (permalink)
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cam for 347 stroker

those keith blacks have 6 cc reliefs per piston, that and a zero deck clearance, .039 by 4.145 gasket, 4.030 bore and 3.4 stroke, and 58cc heads will yield you a comp ratio of 10.8:1. If you decide to run the 185s then opt for the 64cc chambers, this will yield an even 10:1.
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Old 07-08-2004, 03:02 AM   #10 (permalink)
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cam for 347 stroker

the weight didn't sound right that's why i was asking how aacurate the title was. it's a 79 mustang.

i was looking at the 280HR cam before but had no idea what to get and the weiand intake was on my list before the jr.vic intake but thats what the heads recomended, so that what i was planning on, ok so i bought the AFR 205's for like $1,700 on ebay, i should be able to get my money back if i just re-sell them right? price sounded more than fair compared to flatlanderracing.com @ $2,100
thanks for the help would not have been to happy with all the time and money being invested. and i wasn't srry if it came across that way, just that i had planned on these heads for like 3 months or so and i bought them and took some time to save up for and the 185's are alot cheaper. so i just wanted to be sure that i couldn't use them because i made sure before i bought them that they would work, and come to find out...

[ This Message was edited by: hurri10209 on 7/8/04 3:08pm ]

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Old 07-11-2004, 08:43 PM   #11 (permalink)
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cam for 347 stroker

The weight of your car is probably closer to 3300 lbs for a Fox chassis Mustang. I know of people who race them, and in race trim the classes sometimes require 3000 or 2800 pounds for an all out race car(granted there is a little room for ballast, but not much). There probably was a typo on your reg. My drag race Pinto that is stripped to the bone and has some glass parts weighs about 2550 lbs. I agree with others, ditch the 205's, they are race heads for a small cu in motor (even your 347). You will be far better off with TFS Twisted Wedge Track Heats (170cc) or AFR 185's are plenty big. Stick with about 10:1 compression and go with a hydraulic roller or a flat tappet cam, if your on a tight budget go with a regular hydraulic cam (hydraulic roller set-ups can get pricey, especially the retrofits). I have been very happy with Crane products and some of their tech help. It is key to get a good tech guy! I would bet that your mismatch is why you did not get a lot of suggestions or replies. Good luck!!
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Old 07-13-2004, 09:33 AM   #12 (permalink)
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cam for 347 stroker

The weight of my 80 cobra race car is 3100 with me. its a full body car.Also i would run a mech flat tappet cam

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[ This Message was edited by: tonys10sec306 on 7/13/04 9:36pm ]
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