world s/r heads
11-08-2013, 07:37 PM
#1
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Car: firebird
Engine: 355
Transmission: T-5 NWC
Axle/Gears: 4.11
world s/r heads
They only have a fiew miles on them and are set up for a 1.8 inch spring height. Originaly set up for comp cams 986-16 springs. -67cc combustion chambers -2.02 and 1.6 valves
$400 obo. willing to trade for other parts like a ,31 spline 9 inch locker, m/t 275/50/15's
$400 obo. willing to trade for other parts like a ,31 spline 9 inch locker, m/t 275/50/15's
11-13-2013, 04:58 PM
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Car: firebird
Engine: 355
Transmission: T-5 NWC
Axle/Gears: 4.11
Re: world s/r heads
bump. Just realized I posted these heads back in 08. Cant believe I have had these on the shelf that long. Here is one of the posts from when they were still on the car and for sale
ran a 13.16 @ 110 with these heads on a 350 with flat tops, a comp roller cam with 212/218 duration at .050 and 487/495 ,airgap(not an RPM-AIRGAP) intake ,650 edelbrock,NWC t-5 trans,3:73s and radials
ran a 13.16 @ 110 with these heads on a 350 with flat tops, a comp roller cam with 212/218 duration at .050 and 487/495 ,airgap(not an RPM-AIRGAP) intake ,650 edelbrock,NWC t-5 trans,3:73s and radials
11-29-2013, 04:26 PM
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Car: firebird
Engine: 355
Transmission: T-5 NWC
Axle/Gears: 4.11
Re: world s/r heads
1991sleeperthese were fairly oily when I put them on the shelf. I cleaned em up wit sum PB Blaster n a scotch bright quick dis afternoon. I did find a good set of hyd roller springs that I can add for another $100. I know they are not AFR's but for $500 with roller cam springs added they are still much better than L98 heads.
Last edited by tpibird305spd; 11-29-2013 at 04:31 PM.
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11-30-2013, 02:41 PM
#9
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Car: firebird
Engine: 355
Transmission: T-5 NWC
Axle/Gears: 4.11
Re: world s/r heads
irocdarnie... The heads have a 170cc intake runner.
Hey guys copy/paste and search --- comp cams xr264hr-10 dyno sheet---
this is the same set up I had in my car with these heads. Pulled a 13.16 leaving the line @idle. 330hp and 420tq is stock LS1 power and verry streetable. With a little bit of converter and good traction the torque should get you into the 12's.
Hey guys copy/paste and search --- comp cams xr264hr-10 dyno sheet---
this is the same set up I had in my car with these heads. Pulled a 13.16 leaving the line @idle. 330hp and 420tq is stock LS1 power and verry streetable. With a little bit of converter and good traction the torque should get you into the 12's.
11-30-2013, 02:50 PM
#10
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Re: world s/r heads
These are great little heads. Here is the flow data from a sheet I made a bit ago. They also love porting so bump for some good heads.
12-06-2013, 05:31 PM
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Car: firebird
Engine: 355
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Axle/Gears: 4.11
Re: world s/r heads
irocdarnie- The shipping would be $125
lameusername- The exhaust ports are square and the shipping would be $95
lameusername- The exhaust ports are square and the shipping would be $95
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