Help me pick a combination
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Joined: May 2000
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Help me pick a combination
I have a few bolt on '87 L98. I don't have a lot of $$$ to throw at it but I want to pick up some power across the board. What I am thinking is aluminum L98 heads, home bowl ported/gasket matched. A stock LT1 or LT4 cam with 1.6 roller tip rockers. The LT4 cam specs are: 203 intake; 210 exhaust; 476 intake lift; 480 exhaust lift; 115 centerline.
I'm not sure about the TPI. If I port match/clean up the stock parts will it flow enough for the heads/cam? Would the ZZ4 cam be a better choice? I might consider waiting to add aftermarket TPI if these would be a huge difference.
Thanks,
Chuck
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87 Formula 350 14.61@94.07 before 2OTL, TCI stall, Nitto's, tubular LCA's & panhard
98 Z28 1LE 13.15@107.59
1LE Owners Association
I'm not sure about the TPI. If I port match/clean up the stock parts will it flow enough for the heads/cam? Would the ZZ4 cam be a better choice? I might consider waiting to add aftermarket TPI if these would be a huge difference.
Thanks,
Chuck
------------------
87 Formula 350 14.61@94.07 before 2OTL, TCI stall, Nitto's, tubular LCA's & panhard
98 Z28 1LE 13.15@107.59
1LE Owners Association
Banned
Joined: Jul 2000
Posts: 1,384
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Chuck, the heads are a good idea.
For the cam I would go with the ZZ4, ZZ9, or Comp Cam 08-304-8. 1.6 roller rockers.
www.paceparts.com has a lot of good stuff
Ryan
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91 Formula
305 TPI 5speed
1LE/G92/WS6
Paxton SN93, SLP airfoil, ported/polished plenum, March pulleys, Crane AFPR(43psi),Crane Gold 1.6rrs,MSD coil,MSD6AL, Holley 9mm wires, fastchip, Bosch O2sensor, Bosch in-line pump(w/stock pump), SLP headers & catback,short shifter,3:73s w/Auburn posi,170* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.
For the cam I would go with the ZZ4, ZZ9, or Comp Cam 08-304-8. 1.6 roller rockers.
www.paceparts.com has a lot of good stuff
Ryan
------------------
91 Formula
305 TPI 5speed
1LE/G92/WS6
Paxton SN93, SLP airfoil, ported/polished plenum, March pulleys, Crane AFPR(43psi),Crane Gold 1.6rrs,MSD coil,MSD6AL, Holley 9mm wires, fastchip, Bosch O2sensor, Bosch in-line pump(w/stock pump), SLP headers & catback,short shifter,3:73s w/Auburn posi,170* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.
Banned
Joined: Jan 2001
Posts: 1,429
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From: Belleville, IL USA
Chuck,
Your ideas sound great. I like how the LT4 cam looks.
ODB
------------------
*I do custom performance mods on Edlebrock Performer carburetors (dualplane intake mods in the works),
White 1986 Irocz, 305 with iron #416 heads,
383 with aluminum TFS heads,
Edlebrock Performer-RPM intake and Performer #1407 carburetor, +110hp shot of crack, 700R-4 tranny, Vigilante 2400 lockup converter, 3.25:1 Ford 9" rear, Mcreary Road-Stars, SLP-stainless 1.75" shortie headers & Y-pipe, single 3" Borla exhaust, Linginfelter-TPI camshaft part number 74216 pulls 17" vacuum solid. Cam specs 213/219 @.050 114-LSA, sometimes advertised at 216/219 @.050 112-LSA .462/.470 lift @1.5:1 ratio. Using Harland Sharp 1.65:1 roller rockers. MSD-6AL, billet distributor, multi-retard, blaster-3 coil, and RPM switch. SouthSide machine subframe connectors, SSM lift-bars, Moroso 4" underdrive crank pulley.
N/A runs 10.9 @124,
Crack-runs 10.3 @135
haven't run at track since Oct-99
Your ideas sound great. I like how the LT4 cam looks.
ODB
------------------
*I do custom performance mods on Edlebrock Performer carburetors (dualplane intake mods in the works),
White 1986 Irocz, 305 with iron #416 heads,
383 with aluminum TFS heads,
Edlebrock Performer-RPM intake and Performer #1407 carburetor, +110hp shot of crack, 700R-4 tranny, Vigilante 2400 lockup converter, 3.25:1 Ford 9" rear, Mcreary Road-Stars, SLP-stainless 1.75" shortie headers & Y-pipe, single 3" Borla exhaust, Linginfelter-TPI camshaft part number 74216 pulls 17" vacuum solid. Cam specs 213/219 @.050 114-LSA, sometimes advertised at 216/219 @.050 112-LSA .462/.470 lift @1.5:1 ratio. Using Harland Sharp 1.65:1 roller rockers. MSD-6AL, billet distributor, multi-retard, blaster-3 coil, and RPM switch. SouthSide machine subframe connectors, SSM lift-bars, Moroso 4" underdrive crank pulley.
N/A runs 10.9 @124,
Crack-runs 10.3 @135
haven't run at track since Oct-99
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