Head #3904390 Suggestions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Big69C20 Toy · 05-29-2002, 03:02 PM

Ok i looked on Mortec they said Oval port 98cc chamber-closed.
I'm curious if these are good heads to work with or should i just forget about it and sell em and buy some nwe aluminum open chamber heads from like dart or edelbrock or something. Suggestions fellas?

bigjimzlll · 05-29-2002, 03:38 PM

I think those are the peanut port jobs...great for low end torque, but wont live above 4000 rpm...aluminum open chamber rectangle is my vote...but they aint cheap

Big69C20 Toy · 05-29-2002, 04:05 PM

Naw i know those aint them. The peanut ports didnt come into play till the 70s smogging crap from what i read. And this motor sees 5k+ pretty often on the fwy. I've only got a th400 so when i hit 110+ it's up there in the band and it's still got power. This rat for some reason likes the top end, it'll push well up there for some bloomin reason. Anyways thanks fer the help

05-29-2002, 03:02 PM	#1
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	Head #3904390 Suggestions Ok i looked on Mortec they said Oval port 98cc chamber-closed. I'm curious if these are good heads to work with or should i just forget about it and sell em and buy some nwe aluminum open chamber heads from like dart or edelbrock or something. Suggestions fellas? __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

05-29-2002, 03:38 PM	#2
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	I think those are the peanut port jobs...great for low end torque, but wont live above 4000 rpm...aluminum open chamber rectangle is my vote...but they aint cheap __________________ 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

05-29-2002, 04:05 PM	#3
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	Naw i know those aint them. The peanut ports didnt come into play till the 70s smogging crap from what i read. And this motor sees 5k+ pretty often on the fwy. I've only got a th400 so when i hit 110+ it's up there in the band and it's still got power. This rat for some reason likes the top end, it'll push well up there for some bloomin reason. Anyways thanks fer the help __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.



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