Advice Needed for Cam/Intake/Carb for my N/A 347......

[Katmandu]

Cam/Intake/Carb for my N/A 347......

My car is a 89 LX Vert with a T5, 3.55 gear, soon to be 347 11.1CR shortblock with Thumper heads.

My expectations are as follows.... 1) Fair weather weekend cruiser with occasional jaunts down the 1/4 2) I want a radical idle with big top end power 3) Still need to keep it fairly driveable.

The 3.55s and Thumpers are staying for now. I also have a set of Crane 1.7RRs.

My Old School buddy says go big on the cam and get the Revs high. Power range 3000 - 7000 RPMs.

Do I go Roller or Non-Roller on the cam ?? What intake ?? What size carb ??

Advice please !!

 

[Katmandu]

87,500 Members and NO responses ????

Come on guys......help me out here....

 

[Carbed86GT]

Get a custom cam from cam research, 1-303-762-0022. Holley 750 DP and a victor jr should feed your 347 well at high rpm's. I would seriously consider a solid lifter setup. It's not a daily driver so adjustments will be infrequent, and no hydraulic lifter holds a candle to a solid at high rpm's, and nothing idles like a solid either. A solid sounds like you mean serious business.

 

[90Notch]

"I want a radical idle with big top end power"

Getting those heads to make any power up high in that motor is going to need dead on timing events...custom without question!

 

[marine_2003]

With the 347 Setup i was going to build, i was going to go with the Victor Jr intake, a Demon 650, and a custom ground cam that was similiar to the comp cams 282HR. I was going to go with a hydrolic roller setup. Also the AFR 185cc heads.

 

[maverick0716]

If you want to rev it that high I would highly reccomend heads that are meant to make high rpm hp.....Like Edelbrock Vic Jr.'s, Trickflow High Ports, or AFR 185 or 205.

 

[Katmandu]

Get a custom cam from cam research, 1-303-762-0022. Holley 750 DP and a victor jr should feed your 347 well at high rpm's.

Wouldn't a 750 be to big for a 347 ??

I know a double pumper would be great for WOT, but wouldn't it be too much for the street ??

I would seriously consider a solid lifter setup. It's not a daily driver so adjustments will be infrequent, and no hydraulic lifter holds a candle to a solid at high rpm's, and nothing idles like a solid either. A solid sounds like you mean serious business.

How often would Solid lifter setups "NEED" to be adjusted ??

 

[maverick0716]

Wouldn't a 750 be to big for a 347 ??

I know a double pumper would be great for WOT, but wouldn't it be too much for the street ??

If you really want to rev to 7000 rpm, you're gonna need a carburetor that can give it air at those rpms. A 750 dp would be fine I would think.

 

[Katmandu]

"I want a radical idle with big top end power"

Getting those heads to make any power up high in that motor is going to need dead on timing events...custom without question!

To what Specs ??

How much does a custom grind cost ??

 

[bluevenom867]

You'll need a BIG cam.

Example:Comp Cams solid roller cam .613In/Ex 264In/Ex 110* (Magnum 31-761-8)
Comp Cams solid flat tappet .541In/.522Ex 242In/246Ex 106* (Drag race 31-639-5)

Thats what it shows for cam in the 3000-7000rpm range.

Notice thou,that the flat tappet is smaller and cheap to buy.And thats what you would go with for a solid cam.

 

[Carbed86GT]

I know a guy that runs a solid in his daily driver t-bird 393 and he adjusts about 3 times a year.

 

[90Notch]

Guys who make big power and rev stock heads up high all use low lift, high duration cams and lazy lobes. Like I said you need to get the timing events right. Custom should run you roughly $300 +/- $50 depending on who you go to. Try Ed at FTI he has spec'd many cams for stock heads and should know what you'll need.

 

[N8Miller]

87,500 Members and NO responses ????

Come on guys......help me out here....

50,000 post just like this and you cant search it??

like others have said: custom, vic jr/TFS heads, RPM air gap intake, and a 680-750 carb.

 

[Carbed86GT]

My custom roller cam was $257 shipped from cam research. I'm sure a solid or hydr flat tappet cam is significantly lower. I like 'em cause all they grind is Ford cams.

 

[Katmandu]

My custom roller cam was $257 shipped from cam research.

Is the with or without roller lifters ??

 

[90Notch]

Sorry the price I quoted was for a hyd roller not roller

 

[Katmandu]

Sorry the price I quoted was for a hyd roller not roller

Do you mean .... Hydraulic Flat Tappet instead of a Hydraulic Roller ??

 

[Carbed86GT]

just the cam.

 

[90Notch]

"Do you mean .... Hydraulic Flat Tappet instead of a Hydraulic Roller ??"

No I mean hyd roller camshaft:

$325 FTI
$290 Buddy Rawls
$295 HiTech

are prices I've seen, most solid rollers I've seen are less