1.6 RR w/ stock iron L98 heads/cam

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Sep 8, 2001 | 11:27 AM

98_1LE

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Joined: May 2000

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1.6 RR w/ stock iron L98 heads/cam

Is anyone running 1.6 roller rockers on a basically stock L98? I have the LT4 self aligning centerbolt rockers, and would like to put them on the stock heads/cam.

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87 Formula 350 13.94@96.67
98 Z28 1LE 13.15@107.59
1LE Owners Association

Sep 8, 2001 | 01:56 PM

Kevin91Z

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From: Orange, SoCal

Car: 1990 Pontiac Trans Am

Engine: 355 TPI siamesed runners

Transmission: Tremec T56

Axle/Gears: 12-Bolt 3.73

You shouldnt have any problems with 1.6 rockers on the stock L98 heads and stock L98 cam. The lift isnt enough to hit the valve guides or cause coil bind.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

Sep 8, 2001 | 11:09 PM

98_1LE

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Joined: May 2000

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Thanks Kevin. Will the stock springs support the added lift from the rockers? They only have 57K miles.

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87 Formula 350 13.94@96.67
98 Z28 1LE 13.15@107.59
1LE Owners Association

Sep 9, 2001 | 04:07 AM

86IROCTHD

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Joined: Aug 2001

Posts: 483

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From: Dallas, Tx

Car: 88 Trans Am

Engine: lt1 intaked 355 makin 277 on 25 psi of fuel pressure and stock timing :)

Transmission: A4 stock... that moved a mobile dyno a foot shifting into 2nd :)

hey i am puttin the l98 heads on a 305 what head gasket and spark plugs should i use. and are the stock springs good for bout .480 of lift or does it need the heavy duty?