347 Decision made

Pops Fun · Dec 3, 2004

Well finall made a decision to go with forged internals on my 347 short block, (stock block) there was some discussion on thread http://forums.stangnet.com/showthread.php?t=515881
Thanks for the input. Should have a shortblock in a week or so and might start it by Xmas. Have some vacation days and my son Jay will help.. rather I will help him he is ase cert. Anyway have 281 rwhp last dyno then added high flow cats maybe 290 now?? any guesses as to new rwhp 330rwhp?? hope to do a final dyno before tearing it apart then another after tune..

Current combo

Dyno tuned chip
TFS TW Heads -- ported
Steeda 19 Cam -- might do a custom cam(Buddy Rawlins)
Cobra Intake -- ported
FMS 65mm T/B
Pro-M 75MM MAF
Steeda 24# injectors
H&S 1.72 Roller Rockers
MSD 6al, Blaster
Walbro 255 LPH
Cold Air Kit,
Under Drive Pullies
Ford 3.73 Gear
Flowmaster Exhaust,
Mac Shorty Header
High Flow Catted H-Pipe
Timing chain and Gear
Lowered (Eibach 52/94)
Steeda Tri-Ax
Tokico Shocks & Strut

Pops Fun · Dec 3, 2004

Forgot to add 0 degree balance with a aluminum flywheel

WhiteDevil · Dec 3, 2004

If you keep the steeda #19 i would guess 330 because that is way too small for a 347. If you go custom i would guess 360+.

Grn92LX · Dec 3, 2004

Pops, good choice on the 347! Few things: no need at all for pricey and heavy forged crank and rods. Cast is a much better choice for your car. With the money you save on not buying forged you can buy a new much needed camshaft. I'd go with a cam from jay allen www.camshaftinnovations.com I'd use a bigger intake as well. Normally I recomend the TFS R, but it seems that you could probably get by with a holley. You'd want a 75mm tb too if you can afford it. You'd want 1 3/4" longtubes as well, but it seems you arent looking to go super crazy. I just dont wanna see ya end up with a dissappointing stroker.

Mike

One Wicked SVT · Dec 4, 2004

Dude... 330rwhp is childs play with a 347 bolted down with your heads.

What you need to do is call ED CURTIS for a perfect grind cam.

That cam isnt going to cut it at all.

Then you need to optimally tune it on a dyno, and you SHOULD see 375rwhp at the LEAST.

If you dont, then you got a problem somewhere.

We made 330rwhp with H/C/I once before on the dyno. All TFS items, stage 2 cam, track heat intake.

cobradvm · Dec 4, 2004

Bump your injectors to 30#

4Jenna · Dec 4, 2004

Tq monster!!

Black95GTS · Dec 4, 2004

347s are money! Ditch the cobra intake and steeda cam, upgrade your TB and injectors, and I would not be surprised to see 100 more horse, to around 380, with a good tune.

You're doing pretty much the exact setup that I want to do after I graduate.

wytstang · Dec 4, 2004

You would definitely want a custom cam (Ed Curtis, Jay Allen) to get everything out of your stroker. As far as intake and injectors let the cam guys tell you what they recommend for your combo.

Pops Fun · Dec 4, 2004

Thanks for all the replies.... I have sent a cam spec sheet to Buddy Rawlins @ CROSS SECTION ENGINEERING and filled out a Camshaft Questionnaire, waiting to see what he has to say. I may call Ed Curtis and get another opnion. It might all boil down to money seems to be getting in short supply lately.....

Grn92LX,
Mike I went forged because my 2 sons beat me up until I did. Oldest is a ASE cert. Mech. and the youngest is GM of the Mustang shop doing the build. Have to liisten to them...

I am looking into a cam that seems the consenous of the replies ditch the Steeda Do you really think another cam would make about 50 more horses?? Hummm... another $300 for 50 hp sounds pretty good .. now where to find the money ....

67stang390 · Dec 4, 2004

Pops Fun when I was building my 347 stroker I basically had no idea what I was doing at first. I started with a FMS E cam, then a Steeda #19, and now the Anderson N-412. The more I read the more I realized how crucial it is to have the perfect camshaft in your stroker motor. Put in a good custom cam while you're doing all the work. You'll thank yourself for it later.

Pops Fun · Dec 4, 2004

67stang390 said:
Pops Fun when I was building my 347 stroker I basically had no idea what I was doing at first. I started with a FMS E cam, then a Steeda #19, and now the Anderson N-412. The more I read the more I realized how crucial it is to have the perfect camshaft in your stroker motor. Put in a good custom cam while you're doing all the work. You'll thank yourself for it later.

Hi,
Just wondering how the idle quailty is with the N-412 ?? Always heard that the 94-95 coputers didn't idle well with most cams???

67stang390 · Dec 5, 2004

The idle sucks balls. I have a tweecer and it helps some but I still have idling issues especially when the weather changes. O and I wouldn't buy an Anderson cam if I had the option again. They aren't "custom" they're basically like off the shelf cams for $150 more.

Pops Fun · Dec 6, 2004

67stang390 said:
The idle sucks balls. I have a tweecer and it helps some but I still have idling issues especially when the weather changes. O and I wouldn't buy an Anderson cam if I had the option again. They aren't "custom" they're basically like off the shelf cams for $150 more.

Thanks for the input about tje idle.... Anyoneelse want to chime in about idle good or bad
People with custom cams how is your idle ??

mcvey90 · Dec 6, 2004

stage 2

I got a tfs stage 2 cam on my 347. 10.5: 1 compression with all the tfs stuff you see in the sig. I must recommend the r series intake, that thing really wakes up a motor. I haven't had any dyno numbers yet, but I was hoping to get close to 400 with a good dyno tune. as for idle issues, I don't have any yet, it's december in iowa now, usually in the 20's right about now. I've had the idle set at about 1000 rpms since juneish. Haven't had it to the track yet, wanna make sure everything is good and broke in. good luck with your new stroker.

Killercanary · Dec 7, 2004

Pops, like was mentioned, I'd let the CAM grinder make the intake suggestion for you. The two will need to be matched for the given powerband. Also, the added cubes "may" help with the idel issues with the 94-95 as the added cubes should help pull a little more vacuum at idle since there is more displacement.

My custom cam has a lower LSA than most run in their 94-95's and I have no idle issues after bumping the idle to 850rpms in the summer, and 900 in the cooler spring/fall months.

I do not agree that 370+rwhp is an easy thing to achieve. I tossed the idea around last year of doing a stout high compression 347 for my car. I thought that a 375-400rwhp 347 would be fairly easy to build, but after researching it seems theres a LOT more guys in the 330-350rwhp range than there are >370. I know you didn't say this, but I want you to realize this before you throw parts and hope for more than you may get. I'd work CLOSELY with a custom cam grinder and lay out your plans for exactly what yopu want and then make changes accordingly. I highly suggest Ed Curtis. His customer service is BAR NONE. You get MUCH more than just a cam when you buy one from him. I think some people miss this when dealing with him. He might only sell you a cam, but he's there anytime you need him to help with the rest of the "package." Ed also does whatever he can to make everything right, no matter what.

Killercanary · Dec 7, 2004

Also, I agree that I wouldn't put forged parts in it. I look at it this way... why spend money on parts that will hold 600HP plus in a block that can split at 500?

zenboy99 · Dec 7, 2004

Pops fun, what do your heads flow? What is your expected compression ratio?

Pops Fun · Dec 7, 2004

zenboy99 said:
Pops fun, what do your heads flow? What is your expected compression ratio?

Hi,
Compression iis will be 10.1/1
head flow
__69__ @.100”, __141_ @.200”, _201__ @.300”, __243___ @.400”, 280 @.500”, 290_____ @.600

Steve

Pops Fun · Dec 7, 2004

Hi,

Quote: "I do not agree that 370+rwhp is an easy thing to achieve."

Killer.... I agree about the hp Realistically I have 280rwhp adding 45 ci, I should get another 45hp = 325rwhp. Maybe a little more with the stroker helping my ported heads/intake breathe better. Right now my curve falls off at 5500rpm, I think a different cam will help that, getting a little more HP?? To sum it up I think I have a good chance of 330rwhp or so.

I redynoed last night and got disappointed... Had dynoed at 280rwhp then added Highflow cats, thought that would have given me more HP but the dyno says no about the same, 279.7. It made me a little more realistic !!

347 Decision made

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