ported 853 castings

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Dec 13, 2006 | 11:46 PM

#21

TopRPM

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Those intake and exhaust numbers dont look right...

Can they be that close together????

I have set of Midly ported 853's and the flow numbers are as follows

Port Lift Corr/CFM

Int#1 .100 62.7
Int#1 .200 130.8
Int#1 .300 189.5
Int#1 .400 225.6
Int#1 .500 256.6
Int#1 .600 271.5

Ext#1 .100 49.2
Ext#1 .200 102.7
Ext#1 .300 138.0
Ext#1 .400 164.4
Ext#1 .500 187.0
Ext#1 .600 198.4

Dec 13, 2006 | 11:54 PM

#22

Studytime

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From: BTR, La

They don't look right unless you consider they were probably flown with a pipe on the exhaust. Then it makes perfect sense.

Ben T.

Dec 14, 2006 | 10:38 PM

#23

JoeSS

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From: Houston,Tx

I made 397 rwhp with a g5x3 cam and ported 853's on a mustang dyno with a 4200 stall

Dec 15, 2006 | 10:08 AM

#24

8GTOKLR

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From: Socal

Stock 241's from a 03 vette motor I picked up flowed(exhaust flowed with out pipe)...
Int,Exh
.300 178,120
.400 210, 144
.500 218, 162
.550 221, 168
.600 222, 169

After porting
Int,Exh
.300 206, 134
.400 248, 156
.500 276, 174
.550 284, 184
.600 290, 192 thanks Tim

Jan 23, 2007 | 10:06 PM

#25

smp777

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looking at getting some 853 casting heads they have been ported and have some bowl work done. two questions do these numbers look good and whats a good price for them? @ .600 lift intake 312.75 exhaust 213.72 any input would be helpful thanks.

Jan 23, 2007 | 10:07 PM

#26

brad8266

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From: Watertown, NY

Quote:

Originally Posted by Studytime

This is the internet, everyone is a head porter.

Ben T.

Jan 24, 2007 | 07:22 AM

#27

Studytime

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From: BTR, La

Quote:

Originally Posted by smp777

It's impossible to answer that question without seeing the heads. That's like saying you know a girl who's 5'-7" tall. Should you get married to her?

You kinda need to see the heads in person. Other than that, the flow numbers do sound good.

Ben T.

Jan 24, 2007 | 09:06 PM

#28

smp777

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Quote:

Originally Posted by Studytime

lol good point !!! like a friend saying Hey i want you to meet my friend she's 5'7" blonde hair blue eyes. He forgot to tell me she has no teeth and 11 fingers oh and she may really be a man lmao!!! i have no freaking clue what to look for, this guy is hard up for cash and i think he will take 300 for the bare castings. i realize its a risk because i dont really know that much about what to look for or how the porting should look, if i knew how to port i would port mine. they look really good but hell im clueless lol. and who knows if the damn sheet with the flow numbers even goes with these heads.