Head options for 347/S-Trim

Joe 5.0

Founding Member

Feb 1, 2002

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38

Macomb, MI (metro detroit)

Sep 5, 2007

#1

• Sep 5, 2007

• #1

I need to get new heads. My ported RPM's are kinda messed up and not worth fixing. I dont want to downgrade but I dont want to go too big since I dont have a Dart block (I have a B50 Sportsman).

What do you guys think of these choices?

- Victor Jr's

- TFS Highport

- AFR 185 (or 205)

- TFS Twisted Wedge


I'm estimating that my ported RPMs flow ~ 270 or so.

Also I was told that the Vic Jr's require a taller VC and adjustable rockers, is this true and is the pita worth it?

 

juiced_94gt

Active Member

Mar 30, 2005

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Southern California

Sep 5, 2007

#2

• Sep 5, 2007

• #2

AFR 185's are your best bet, but the TW's would be my second choice if $$ is an issue.

 

Black95GTS

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Jan 8, 2004

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Marlborough, MA

Sep 5, 2007

#3

• Sep 5, 2007

• #3

Do you have to pass emissions? Goals for the car? Stock cam?

Adam

 

Venom351R

Founding Member

Apr 27, 2002

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MAINE

Sep 5, 2007

#4

• Sep 5, 2007

• #4

Im running AFR 185's and they seem to preform very well. I think with a better intake they would be even better then they are now, a problem I hope to fix next spring.

 

Joe 5.0

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Feb 1, 2002

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Macomb, MI (metro detroit)

Sep 5, 2007

#5

• Sep 5, 2007

• #5

The cam is not stock, its a Crower stage 2, I believe, designed for supercharger engines.

My goal for the car is for it to run reliably and make somewhere in the low 500's at the wheels and turn low 11's.

 

5spd GT

"the 5.0 owns all"

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Aug 7, 2002

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Arkansas

Sep 5, 2007

#6

• Sep 5, 2007

• #6

AFR 205's will help the supercharger work more efficiently...over the 185's...

 

BlackVert

15 Year Member

Oct 3, 2003

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Bethesda, MD

Sep 5, 2007

#7

• Sep 5, 2007

• #7

they are all good heads, the afrs being the best out of the box. the others can be made essentially as good by being ported, but that takes away the cost savings over the afrs. iirc, afr 205s flow about 305

my crane pro magnum rockers fit under stock height valve covers on my 205s

if you could find some used TEA ported heads, you might be able to touch the afrs for about the same price

 

blksn955.o

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Mar 15, 2002

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st.louis mo 314

Sep 5, 2007

#8

• Sep 5, 2007

• #8

I dont think you will be unhappy with either the TFS or AFR. I have seen some impressive stuff from the TFS heads...buddy has some VERY VERY high end TW heads (6k in portwork) on a N/A setup and its a sight.

if your looking for around 500hp or so I think either the 185's or TFS heads (IIRC they are 175cc heads) will do great.

 

4Jenna

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Sep 12, 2001

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AZ

Sep 6, 2007

#9

• Sep 6, 2007

• #9

What happened to the RPMs to make them non repairable?

 

Joe 5.0

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Feb 1, 2002

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Macomb, MI (metro detroit)

Sep 6, 2007

#10

• Sep 6, 2007

• #10

I ran them too long with the HG popped and the flame wore down material between the combustion chamber and a water jacket. They CAN be repaired (for about $600 total), and probably would be fine, but I dont really want to take that chance, and my tuner agrees.

It kinda sucks because they are ported, made good power, and to not downgrade in flow I'll have to go with something like a AFR 185 or similar.

 

Black95GTS

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Jan 8, 2004

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Marlborough, MA

Sep 6, 2007

#11

• Sep 6, 2007

• #11

With a 347 and HCI, you will be able to put 500 to the wheels with any of those heads, providing you get enough fuel in and the tune is good.

IMO the AFR 205 is the best out of the box head one can buy.

Adam

 

Grn92LX

Fidanza Man!

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Jan 14, 2001

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Sep 6, 2007

#12

• Sep 6, 2007

• #12

Victor jr's or 185 TW would be my choice. I would fix them personally, but to answer your question, those would be my choices.