Question about fast burn heads
Thread Starter
Member
Joined: Jul 1999
Posts: 327
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From: Stillwater, Oklahoma, USA
Question about fast burn heads
I just took my Ram Jet 350 crate motor apart and sold the Vortech heads. I got my fast burn heads today to go on it and I was wondering if I can use the same pushrods and rocker arms. Anyone know?
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L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56
On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.
------------------
L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56
On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.
Senior Member
Joined: Jan 2001
Posts: 527
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From: outerspace(maybe..pluto)?
not sure of the componets of vortec and wont try and act like i do but,.. i do know on my sportsman2 heads they are fast burn chambers and they use hardened pushrods and are standard length and regular screw-in studs and guide plates but.. not sure if those pushrods are they same length as vortecs?? and the rocker arms on vortecs might be the self-alginig type , not sure on them. if i remember right the vortecs ARE the same, but, not 100% sure.
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89 firebird formula
356 10.5:1compression
comp cams xe262 cam
performer rpm intake
#1405 edlebrock 600
sportsman 2 heads 64cc 2.02/1.60 valves 200cc intake runner
msd 6al
h.e.i. proform 50,000 volt vac. advance ditributor
700r-4 with 3.08 first gear and 3.23 posi 7 5/8 rear end.
b trans shift kit(will kill shifts...suck dong!!)
shorty heddman hedders with custom 3" pipe y-pipe back(no damn cat!) with 40 series flowmaster!
future mods: 406 roller REALLY REALLY REALLY RADICAL!!!!!
------------------
89 firebird formula
356 10.5:1compression
comp cams xe262 cam
performer rpm intake
#1405 edlebrock 600
sportsman 2 heads 64cc 2.02/1.60 valves 200cc intake runner
msd 6al
h.e.i. proform 50,000 volt vac. advance ditributor
700r-4 with 3.08 first gear and 3.23 posi 7 5/8 rear end.
b trans shift kit(will kill shifts...suck dong!!)
shorty heddman hedders with custom 3" pipe y-pipe back(no damn cat!) with 40 series flowmaster!
future mods: 406 roller REALLY REALLY REALLY RADICAL!!!!!
Senior Member
Joined: Feb 2000
Posts: 769
Likes: 0
From: Stillwater, OK
Joe, I copied this off pace Chevrolet's web page. From what I reading, I think you'll be ok, just use hardened pushrods.
later.
quote:Screw-in 3/8" rocker studs are used., and accept most available self-aligning style roller rocker arms.
Uses all conventional "low cost" readily available 23° self aligning rocker arms and valvetrain supports and hardware.
GM Performance Parts' attention to detail in the Fast Burn head tooling assures super clean and accurate castings.
This cylinder head is a bolt-on 40 horsepower increase when used on our ZZ4 crate engine. With appropriate camshaft selection, a single plane intake manifold and a 750 cfm carburetor, a ZZ4 crate engine is capable of producing 500+ horsepower.
When tested on a 383 cubic inch small-block engine with 9.8 to 1 compression ratio and .540" lift roller cam, single plane intake manifold and 750 cfm Holley carburetor, the Fast Burn heads produced 497 horsepower at an incredibly low 5800 RPM
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350 4 bolt main, Speed-O-Motive 383 stroker kit, re-sized rods ground for clearance,TRW Forged pistons,10.7:1 compression,HPC Coated RPM intake, Speed Demon 750 cfm carb,World Products Sportsman II heads,2.02/1.60 valves, Comp Cam 1.6 roller rockers, Comp Xtreme 284 cam,240/246@.050 with .540 lift,Crane pushrods,ATI damper,Proform HEI and MSD6A box,HPC coated 1 5/8 headers, 2.5" exhaust with 40 series mufflers,TH350 with B&M 3000 stall, Powertrax NoSlip Locker, 4.11 gears.
later.
quote:Screw-in 3/8" rocker studs are used., and accept most available self-aligning style roller rocker arms.
Uses all conventional "low cost" readily available 23° self aligning rocker arms and valvetrain supports and hardware.
GM Performance Parts' attention to detail in the Fast Burn head tooling assures super clean and accurate castings.
This cylinder head is a bolt-on 40 horsepower increase when used on our ZZ4 crate engine. With appropriate camshaft selection, a single plane intake manifold and a 750 cfm carburetor, a ZZ4 crate engine is capable of producing 500+ horsepower.
When tested on a 383 cubic inch small-block engine with 9.8 to 1 compression ratio and .540" lift roller cam, single plane intake manifold and 750 cfm Holley carburetor, the Fast Burn heads produced 497 horsepower at an incredibly low 5800 RPM
------------------
350 4 bolt main, Speed-O-Motive 383 stroker kit, re-sized rods ground for clearance,TRW Forged pistons,10.7:1 compression,HPC Coated RPM intake, Speed Demon 750 cfm carb,World Products Sportsman II heads,2.02/1.60 valves, Comp Cam 1.6 roller rockers, Comp Xtreme 284 cam,240/246@.050 with .540 lift,Crane pushrods,ATI damper,Proform HEI and MSD6A box,HPC coated 1 5/8 headers, 2.5" exhaust with 40 series mufflers,TH350 with B&M 3000 stall, Powertrax NoSlip Locker, 4.11 gears.
Thread Starter
Member
Joined: Jul 1999
Posts: 327
Likes: 0
From: Stillwater, Oklahoma, USA
Good info Tracy. I appreciate it. From the sound of things, I should be alright. No reason to use hardened pushrods if Im not using guide-plates, right? Should I be using guideplates? Its probably gonna be spun to about the 5800-6000 range.
------------------
L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56
On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.
------------------
L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56
On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.
Senior Member
Joined: Feb 2000
Posts: 769
Likes: 0
From: Stillwater, OK
If you haven't really changed the rocker ratio over the Vortecs, I bet you'll be ok. For that setup, you probably can get by with the rockers and pushrods you have.
Good luck and may see you at cruise night soon.
later man!
Tracy
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350 4 bolt main, Speed-O-Motive 383 stroker kit, re-sized rods ground for clearance,TRW Forged pistons,10.7:1 compression,HPC Coated RPM intake, Speed Demon 750 cfm carb,World Products Sportsman II heads,2.02/1.60 valves, Comp Cam 1.6 roller rockers, Comp Xtreme 284 cam,240/246@.050 with .540 lift,Crane pushrods,ATI damper,Proform HEI and MSD6A box,HPC coated 1 5/8 headers, 2.5" exhaust with 40 series mufflers,TH350 with B&M 3000 stall, Powertrax NoSlip Locker, 4.11 gears.
Good luck and may see you at cruise night soon.
later man!
Tracy
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350 4 bolt main, Speed-O-Motive 383 stroker kit, re-sized rods ground for clearance,TRW Forged pistons,10.7:1 compression,HPC Coated RPM intake, Speed Demon 750 cfm carb,World Products Sportsman II heads,2.02/1.60 valves, Comp Cam 1.6 roller rockers, Comp Xtreme 284 cam,240/246@.050 with .540 lift,Crane pushrods,ATI damper,Proform HEI and MSD6A box,HPC coated 1 5/8 headers, 2.5" exhaust with 40 series mufflers,TH350 with B&M 3000 stall, Powertrax NoSlip Locker, 4.11 gears.
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