Port or no port - The 1947 - Present Chevrolet & GMC Truck Message Board Network

J_PEPIN87 · 02-06-2009, 10:56 AM

I'm currently building a 427 bbc for my '74. I already have the short block assembled. My question is, i have a set of o49 oval ports that i took to the local machine shop to ask the guy wat he would recommend doing to the heads to get some decent power and he told me to just put some bigger valves in them and they would work just fine that it wouldn't be worth porting them but he could still do it if i wanted to. Should i still port them or not wat do yall think?

ProStreet68SB · 02-06-2009, 07:28 PM

i'd still port them, especially if you can do it yourself, then why not get the free horsepower out of them, and if you going to port them, you might as gasket match them and the intake. big valves are nice and porting will help them work all that much better imo

*Cunit69* · 02-06-2009, 07:35 PM

Its not worth the time and energy. I have never been able to tell a difference.

J_PEPIN87 · 02-09-2009, 09:46 AM

Thanks guys i guess i wil not be porting them because i wasnt going to do them myself i was going to take them to the local machine and he was charging me a pretty good penny.

bigjimzlll · 02-09-2009, 10:20 AM

Just make sure they clean the bowls up where they cut the bigger valves in

J_PEPIN87 · 02-09-2009, 06:34 PM

Quote:

Originally Posted by bigjimzlll

just make sure they clean the bowls up where they cut the bigger valves in

got it

02-06-2009, 10:56 AM	#1
J_PEPIN87 Registered User Join Date: Sep 2008 Location: PASADENA,TX Posts: 206	Port or no port I'm currently building a 427 bbc for my '74. I already have the short block assembled. My question is, i have a set of o49 oval ports that i took to the local machine shop to ask the guy wat he would recommend doing to the heads to get some decent power and he told me to just put some bigger valves in them and they would work just fine that it wouldn't be worth porting them but he could still do it if i wanted to. Should i still port them or not wat do yall think?

02-06-2009, 07:28 PM	#2
ProStreet68SB The Engine Whisperer Join Date: Sep 2006 Location: Ohio Posts: 770	Re: Port or no port i'd still port them, especially if you can do it yourself, then why not get the free horsepower out of them, and if you going to port them, you might as gasket match them and the intake. big valves are nice and porting will help them work all that much better imo

02-06-2009, 07:35 PM	#3
Cunit69 Account Suspended Join Date: Nov 2008 Location: Burnet Texas Posts: 121	Re: Port or no port Its not worth the time and energy. I have never been able to tell a difference.

02-09-2009, 09:46 AM	#4
J_PEPIN87 Registered User Join Date: Sep 2008 Location: PASADENA,TX Posts: 206	Re: Port or no port Thanks guys i guess i wil not be porting them because i wasnt going to do them myself i was going to take them to the local machine and he was charging me a pretty good penny.

02-09-2009, 10:20 AM	#5
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	Re: Port or no port Just make sure they clean the bowls up where they cut the bigger valves in __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA



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