Cylinder Head - Porting - Is it worth the $$$$$ - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LT-102 · 04-22-2002, 04:33 PM

I'm considering having my cylinder heads ported and polished. I don't know if it will be money well spent. Have a freshly rebuilt 350 with aluminum intake and 4BBL, headers, 487X heads and 11.00-1 domed pistons. Due to the great Ohio weather I have not had a chance to get it to the strip to see what the new numbers are. Whata you think?

Pumkin Truck · 04-22-2002, 04:51 PM

i also want to know if it is worth it. i have read that the engine is a big air pump and you will get better performance if you preform head work because the motor can breathe better. but what would the gain be if you port and polish the heads, more hp, torque? it would help if anyone could correct me or add to this. thanks

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1969 Gmc swb stepside Wimpy six soon to be a 500cid cadillac!!

Longhorn Man · 04-22-2002, 04:55 PM

The big question is what kind of cam you running, and what do you use the truck for?
light clean up can help all around, but hoggin out the heads will hurt driveablilty.

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'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

LT-102 · 04-22-2002, 05:09 PM

It's not a daily driver. Just finished a restoration on the truck and would like to get some better numbers at the strip. Right now the cam is a hydrolic .214-.214 duration with .443 lift.

cableguy0 · 04-22-2002, 05:25 PM

u really arent gonna benefit that much from head work on that motor without more cam.for a performance cam that is very small.ur barely moving the valves open

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72 chevy lwb 350 lunati cam ported and polished cast 2.02 heads proform hei edelbrock performer rpm and 750 carb balanced bottom end 9.5:1 compression ps,pb th350 with a tci 2500 stall convertor full man v-body kevlar clutches and bands as well as other goodies

Longhorn Man · 04-22-2002, 05:26 PM

if anything, you'd kill the intake charge velosity. The air /fuel mixture wouldn't be moving very fast.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

Pumkin Truck · 04-22-2002, 05:30 PM

so would you guys wouldnt recommend head work on a daily driver even if it were built for street and occassionally on the strip?

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1969 Gmc swb stepside Wimpy six soon to be a 500cid cadillac!!

69 longhorn · 04-22-2002, 05:30 PM

For anything street,or street /strip,the best for the money would be a good bowl clean up,3 angle. A little more cam will help also,but no point in spending for a full port & polish.......69 longhorn.

04-22-2002, 04:33 PM	#1
LT-102 Registered User Join Date: Nov 2000 Location: Greenville, Oh USA Posts: 166	Cylinder Head - Porting - Is it worth the $$$$$ I'm considering having my cylinder heads ported and polished. I don't know if it will be money well spent. Have a freshly rebuilt 350 with aluminum intake and 4BBL, headers, 487X heads and 11.00-1 domed pistons. Due to the great Ohio weather I have not had a chance to get it to the strip to see what the new numbers are. Whata you think?

04-22-2002, 04:51 PM	#2
Pumkin Truck Thats just prime! Join Date: Mar 2002 Location: TEXAS Posts: 720	i also want to know if it is worth it. i have read that the engine is a big air pump and you will get better performance if you preform head work because the motor can breathe better. but what would the gain be if you port and polish the heads, more hp, torque? it would help if anyone could correct me or add to this. thanks ------------------ 1969 Gmc swb stepside Wimpy six soon to be a 500cid cadillac!! __________________ 69 GMC short bed stepside with a wimpy six that can barely pull itself. 99 Chevrolet Camaro Z-28 1 Bad 5.7ltr LS1

04-22-2002, 05:25 PM	#5
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	u really arent gonna benefit that much from head work on that motor without more cam.for a performance cam that is very small.ur barely moving the valves open ------------------ 72 chevy lwb 350 lunati cam ported and polished cast 2.02 heads proform hei edelbrock performer rpm and 750 carb balanced bottom end 9.5:1 compression ps,pb th350 with a tci 2500 stall convertor full man v-body kevlar clutches and bands as well as other goodies __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

04-22-2002, 05:30 PM	#7
Pumkin Truck Thats just prime! Join Date: Mar 2002 Location: TEXAS Posts: 720	so would you guys wouldnt recommend head work on a daily driver even if it were built for street and occassionally on the strip? ------------------ 1969 Gmc swb stepside Wimpy six soon to be a 500cid cadillac!! __________________ 69 GMC short bed stepside with a wimpy six that can barely pull itself. 99 Chevrolet Camaro Z-28 1 Bad 5.7ltr LS1

04-22-2002, 05:30 PM	#8
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	For anything street,or street /strip,the best for the money would be a good bowl clean up,3 angle. A little more cam will help also,but no point in spending for a full port & polish.......69 longhorn. __________________ http://community.webshots.com/user/hotrodhorn

04-22-2002, 04:55 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	The big question is what kind of cam you running, and what do you use the truck for? light clean up can help all around, but hoggin out the heads will hurt driveablilty. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio

04-22-2002, 05:09 PM	#4
LT-102 Registered User Join Date: Nov 2000 Location: Greenville, Oh USA Posts: 166	It's not a daily driver. Just finished a restoration on the truck and would like to get some better numbers at the strip. Right now the cam is a hydrolic .214-.214 duration with .443 lift.

04-22-2002, 05:26 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	if anything, you'd kill the intake charge velosity. The air /fuel mixture wouldn't be moving very fast. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio



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