I'm building a stock block 347 with a coast rotating assembly. I have a set of ported trick flow tw heads that flow just under 300 cfm. The intake i have is the trickflow street heat. Is that intake gonna be to small? If it is what intake do you guys suggest? Also what kind of numbers should i expect with this 347 and my ported heads to the rear wheels? It is going thru a c4 trans. Thanks!
building a 347 what intake???
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giddyup306
Founding Member
- Oct 22, 2002
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300 CFM should make a stout 347! When you start flowing around that much though you might sacrifice torque down low or run into some driveability problems in a street car.
I'd go with a TFS intake or a Performer II intake. Stay away from cobra or explorer type intakes.
It's hard to say how much power you'll make. It depends a lot on the cam and CR.
You should be able to make 400 RWHP pretty easy with the right cam and a good tune.
I'd go with a TFS intake or a Performer II intake. Stay away from cobra or explorer type intakes.
It's hard to say how much power you'll make. It depends a lot on the cam and CR.
You should be able to make 400 RWHP pretty easy with the right cam and a good tune.
MrXCESSIVESPEED
Member
Really depends on the cam, CR and intentions of the car....
With a healthy cam and shifting above 7000rpm with a 4:30 gear or so I'd look into a Victor 5.0 or a ported Holley SysteMAX II. If your more street car oriented I'd look into a box stock Holley or RPM II, or even the TFS-R.
Whats the entire combo? Whats the weight of the car? 5spd or Auto? Rear Gear? Exhaust size?
With a healthy cam and shifting above 7000rpm with a 4:30 gear or so I'd look into a Victor 5.0 or a ported Holley SysteMAX II. If your more street car oriented I'd look into a box stock Holley or RPM II, or even the TFS-R.
Whats the entire combo? Whats the weight of the car? 5spd or Auto? Rear Gear? Exhaust size?
ninety15.0
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- Mar 10, 2004
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Yea i think we need to know a little more about the combo/intentions for the car. Is this going to be a street or strip car? How streetable is acceptable for you? What kind of converter are you looking at running? What gear?
I think you are going to want a very healthy intake if your heads flow that much. Definitely something like an RPM II or a systemax II. The TFS-R would work...even a TFS box.
I think you are going to want a very healthy intake if your heads flow that much. Definitely something like an RPM II or a systemax II. The TFS-R would work...even a TFS box.
I see three issues of a little concern:
- Stock Block
- Revving past 7,000
- Potential to make 400+ rwhp
The power output will depend on compression, camshaft, accessories, attention to detail, and engine builder.
Otherwise, I like the Holley myself.
- Stock Block
- Revving past 7,000
- Potential to make 400+ rwhp
The power output will depend on compression, camshaft, accessories, attention to detail, and engine builder.
Otherwise, I like the Holley myself.
The rest of my combo is an anderson b31 cam, c4 trans 4000 stall, 3:73 gear, and all the bolt crap you can buy. The car is not a daily driver, it is a street /strip car that sees more street but only on nice sunny days. With everything i have last year the car went 11.67@112 with a stock shortblock with 140K miles on it.
egan_gt
New Member
Im running a typhoon on my 347 w/ AFR 185s and a Z cam. Probably wasnt my brightest idea to run a typhoon, but money was short. From what Ive read, Im thinking of going with either a Holley or a TFS intake?
A stock Victor 5.0 will feed that, TF Box or you could go with an EFI conversion like Victor Jr. An R is a good long runner for it as well as a ported Holley SMII.
egan_gt
New Member
It made 310 hp/ 340 tq. That is with no tune and I was going way lean at WOT, like 16:1. I am running 30lb injectors w/ a 255lph pump and the fuel pressure was at 42lbs with the vacuum line plugged in.
PUNISHER RACING
Active Member
88mouse
New Member
+1
aren't all the TF intakes the same? I thought the trackheat and the R just had more port work done to them.
Buddy of mine is running the holley and it make very good power.
