I have an 87 LB9 IROC and was aondering what advantages if any the L98 vette heads would give me. I'm thinking about a cam change in the summer and was just wondering about heads too.

Thanks for the time

Robert

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1987 IROC-Z Auto (LB9)
Black/grey interior with the stance of a streetfighter

Mods
Custom exhaust. 4 Inch pipe from the headders all the way back to a single muffler at the rear. No Cat.

Future mods due in March:
K&Ns
RAM Air
Air foil
AFPR

Hoping to get a couple of tenths with that lot

 

They are an extremely high flow SMALL CC intake port design. That equals massive low end torque due to intake velocity. The trick to a fun car is not absolute horsepower but having adequate torque when you mash the gas from moderate cruising. The ZZ4 uses these heads and with the HOT cam has over 400 lb-ft of torque at 3000 RPM not bad for a "little" 350 :-) Try to do that with large port heads.

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84 Camaro ZZ4 with HOT cam. 1.88 60' (12.98 @ 105MPH E.T.)
Recently Ported Heads, Installed Larger Race-Flo Valves and RPM Air Gap Intake (No new times)
Other Mods: You name it and I have probably changed it.

2001 Dodge Ram Quad Cab 5.9L 4*2

The Bowtie
ASE Certified Auto Tech
LIVE AND DIE BY THE ALMIGHTY BOWTIE!

 

Be careful putting 350 heads on a 305. Reasons: 1. 305 has a small chamber and i think usually the 350's are a little bigger so you would have les compression. 2. the 350 heads have a larger valve and you have an itty bitty bore so make sure your valves do not hit the side of the cylinder wall/ deck.

 

The vette aluminum heads fit on a 305 just fine, wont lose any compression either. If they are ported correctly, they flow quite well too. I would use them if you can get a set cheap.

 

Madmax is right. The vette heads are 58cc just like stock 305 heads are.
They also weigh a hell of a let less than cast iron, which is another advantage.

 

use them look at my sig i should be running low 13's with a miniscule 305

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92' camaro
New 305 block TPI conversion, Flat top pistons,Bore over .30 Forged parts all around,Edelbrock intake,ported plennum,ported corvette alluminum heads, accel cam,52mm throttle bodie, SLP runners Home aid cold air induction, Air foil,ford SVO 19lb injectors,fuel regulator,cloys timing chain, comp alluminum roller rocker arms and pushrods MSD 8.5 mm wires, bosch plattinum plugs, hypertech cap & rotor and coil, Edelbrock TES headers, free flowing catalytic converter and a 3 inch force II flowmaster exhaust system, and a 3 inch cutout,Zoom multi friction clutch, T-5 tranny,billenstien shocks&struts.
Soon to come!!!
Procharger system 12lbs o boost.
New paint job(hawaiin orchid purple)Cast alluminum ZR1 rims w/ 275 tires.
Favorite quote: "where ever u go, there u are"

Other car;
1971 plymouth Duster
Mods:340,edelbrock victor jr. intake, 650 4 barrel holley, heddman headers,40 series dual flowmasters, cold air intake,4:10 gears, just got a new paint job and cragar rims with 315 tires in the back.
:Yeah its not a chevy but damn how many 71' dusters have u seen in the streets.

 

I would be very angry if I couldn't run low 13's with that "miniscule 305" You could run so much faster with less money. But, I guess you are different and I respect that.