[ggreene]

Getting everything ready to put together. Just wondering what you all think this setup will produce. Here is what I got.
Stock block 347 stroker, with keith black forged flat top pistons
World Products Windsor SR. iron heads shaved down to 60 cc chamber.
F303 cam (I know will be much better with custom, will come next winter)
Harland sharp 1.6 roller rockers
Parker funnel web intake, holley 650 DP
Full Msd ignition
Mac shorty headers, with 2.5 pipes with flomasters (not sure which ones)
T-5 with aluminum driveshaft and 3.73 gears (may go 4.10 once running)

What are your estimates on Hp Motor and RWHP?

[302Army187]

Originally Posted by ggreene Getting everything ready to put together. Just wondering what you all think this setup will produce. Here is what I got. Stock block 347 stroker, with keith black forged flat top pistons World Products Windsor SR. iron heads shaved down to 60 cc chamber. F303 cam (I know will be much better with custom, will come next winter) Harland sharp 1.6 roller rockers Parker funnel web intake, holley 650 DP Full Msd ignition Mac shorty headers, with 2.5 pipes with flomasters (not sure which ones) T-5 with aluminum driveshaft and 3.73 gears (may go 4.10 once running) What are your estimates on Hp Motor and RWHP?

I've highlighted your issues.

heads are not great. those heads where great when they first came out in what? the 90's

cam is complete shit. nothing else needs to be said.

intake manifold is a good one

carb is entirely to small. even to small for a h/c/i 302 in my opinion

and the shorty headers and flow-disasters are holding back power too.



its a odd combo, so hard to guess, but I will say 320rwhp

[ggreene]

Thanks for the input. I know the Fcam is outdated. It is new and came with the car, so I am going to use it for now. Prob change it out next winter. Its just a street car, so if it is strong enough for me, then it might stay. I plan on saving my money until I can do a aluminum head swap, so I want to wait till then to get my cam. Holley recomends 650 for my setup, and just about everyone on this board has said 650. I have a nice 750 that I could use, but recomendations for carbs have been in the 650's favor.

[ryanw]

If holley thinks thats all you need then do it. If you have it tuned and dyno they should be able to tell you if its to big or to small, then go from there

[302Army187]

with bigger heads and that intake I would have went 850+

[MIGHTYJO3YOUNG]

Originally Posted by 302Army187 with bigger heads and that intake I would have went 850+

If the bullet hole stickers were used. I hear you gain 20 hp for every hole due to increase aerodynamics.

[93hatch]

That's gona be a bad ride maaaaan

[9Sec93LX]

To make maximum horsepower it's all about the combination of parts you use. Right away I see you're using the Parker Funnel Web intake. Totally mismatched to the rest of your pieces, the Parker's a great intake manifold (for a racecar). Powerband on this intake is 4500-8000 rpm, well out of the powerband of this combo. Go with the Edelbrock Performer RPM Airgap manifold instead, much better 2500-6500 rpm powerband. Call Comp Cams when you're ready to replace that F cam. They'll ask a few questions about your ride and intended usage and match you up with a sweet cam & kit.

The 650 DP carb can easily support 450-500 hp, so I would stay with that for now. 1 3/4" long tube headers, an H or X pipe and the Flowmasters should be the ticket. You sacrifice torque throughout the entire powerband with shorty headers.

[itsjustamustnag]

yea carb is good where it is---had guy come in with 502 at dads shop and wondered y its ran like crap he stuck 1000plus form holley thinking he had a beastly motor--dad took his holley 850 off his 502 and put it on there-- ran perfect poped right off performed better --dude bought it off of my dad right then and there------too big will only hurt u so go with wat they say if u gave them ur whole build-----f cam has to go

[69fastback]

Why does everyone want to overcarb? The 650 is fine.....



Volumetric efficiency = (CID X RPM) / 3456







The intake, on the other hand is way too big for the rest of the setup. It's going to kill any power it would have made below about 3000 RPMs.

[302Army187]

Originally Posted by MIGHTYJO3YOUNG If the bullet hole stickers were used. I hear you gain 20 hp for every hole due to increase aerodynamics.

lol

Originally Posted by 93hatch That's gona be a bad ride maaaaan

4 SUR! going to be able to edge out 302's by a fender at least!!!

[ryanw]

Originally Posted by itsjustamustnag yea carb is good where it is---had guy come in with 502 at dads shop and wondered y its ran like crap he stuck 1000plus form holley thinking he had a beastly motor--dad took his holley 850 off his 502 and put it on there-- ran perfect poped right off performed better --dude bought it off of my dad right then and there------too big will only hurt u so go with wat they say if u gave them ur whole build-----f cam has to go

+1 ya my dad has a 502 and ya i think your right its a 850cfm. Ive read alot that most people make the mistake of putting way to big of a carb or the engines

[ggreene]

Thanks for the input guys. I am using all the parts that came with the car when I bought it. I am going to go ahead and put this combo in. Next winter I plan on getting a better h/c/i for it. Just was courious on how this setup would turn out.

[ggreene]

Ok, so after doing some more research I have decided that I will be on the look out for a good deal and switch to an air gap when I find one. If you do not put an engine on dyno, how do you determine what the max RPM should be? or would i be an idiot for not dyno tuning once it is done.

[1slo5.0]

Originally Posted by ggreene Getting everything ready to put together. Just wondering what you all think this setup will produce. Here is what I got. Stock block 347 stroker, with keith black forged flat top pistons World Products Windsor SR. iron heads shaved down to 60 cc chamber. F303 cam (I know will be much better with custom, will come next winter) Harland sharp 1.6 roller rockers Parker funnel web intake, holley 650 DP Full Msd ignition Mac shorty headers, with 2.5 pipes with flomasters (not sure which ones) T-5 with aluminum driveshaft and 3.73 gears (may go 4.10 once running) What are your estimates on Hp Motor and RWHP?

It will be in the 320 area which is low for a 347 but in all honesty, that thing is a mess. It is crying for new heads, cam and intake. It could use a bigger carb too.

[1slo5.0]

Originally Posted by itsjustamustnag yea carb is good where it is---had guy come in with 502 at dads shop and wondered y its ran like crap he stuck 1000plus form holley thinking he had a beastly motor--dad took his holley 850 off his 502 and put it on there-- ran perfect poped right off performed better --dude bought it off of my dad right then and there------too big will only hurt u so go with wat they say if u gave them ur whole build-----f cam has to go

It ran perfect because the carb needed to be tuned. A 502 will need every bit of a 1000cfm carb unless it is a thrown together mess of mismatched parts. Without knowing the rest of the combination, this is not even a comparison or debatable. I'm willing to bet this 502 was not over carbureted. About the only time you can throw a Holley on and not have to do much tuning is when it is too small of a carburetor.

Originally Posted by 69fastback Why does everyone want to overcarb? The 650 is fine..... Volumetric efficiency = (CID X RPM) / 3456 The intake, on the other hand is way too big for the rest of the setup. It's going to kill any power it would have made below about 3000 RPMs.

I'm assuming you meant cfm instead of volumetric efficiency. Either way, that formula is flawed. It is a generic formula for a broad range of applications, just like an off the shelf cam. If I would have went with that formulas recommendations on anything I've owned I would have had some slow junk. The engine in my black car picked up a ton of horsepower going from a 1000hp to an 1150 Dominator and then picked up a ton more from tuning. How much it picked up from the carb swap I don't remember without digging thru the stack of dyno sheets. It was in the 30hp or so ball park though. I ran 1000cfm Holley HPs on a couple of my 347s. I've always laughed in the face of over carburetion. I used to run an auto parts store when I was younger. I had an 85 Mustang that I dumped a 66 289 K code in. I put a new 600 Holley on it and then switched to a Holley 750 and it was a night and day difference. Ford used a 715cfm Holley on these engines. If you use the formula 289x7000/3456= 585cfm....which would choke the life out of the engine. Do you smell what I'm steppin' in?

[1slo5.0]

Lol! Food for thought. My 425 that made 742hp at 7200 rpm with an 1150 Dominator.

Formula - 425x7200rpm/3456= 885 cfm

A Holley HP 1000 choked this engine, an 885 cfm carb would kill it.

[302Army187]

thank god someone stepped in with some sense. I was getting bullied on by these small carb wacko's! haha

[93hatch]

moral of the story is carbs are for old people and losers (if its on an 86+)

[88Saleen]

Originally Posted by 93hatch moral of the story is carbs are for old people and losers (if its on an 86+)

+1 haha