1.6/1 Rocker arm questions

Started by GOT2B GM, May 01, 2006, 07:19:33 AM

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GOT2B GM

Are these a direct bolt on for the LG5. Do they use the original length LG5 pushrods? What donor motors can I get the rockers from? (I'll probably just use factory stamped 1.6 rockers) And lastly, what if any modications are needed to accomodate the 1.6 rockers?

Thanks


Matt Shantz - 1990 Pontiac Turbo Grand Prix COLD A/C 80K mi, KAZ Hot Tuned, Birchtrax'ed +  a few mods  ......... 14.6829 @ 95.11 mph

GPChief

The 3100 series motors have 1:6 rockers, 2000 + are roller rockers.

Not sure about the push rods, I installed Comp Cams 1:6 roller rockers with hardened pushrods from Comp Cams when I switched.

HTH,
Thomas
2004 GTP -  3.8 Blown - Only modding for MPG.
1997 GTP  - 3.8 Blown - Too many mods to list.
1996 GTP - 3.4 DOHC - Twin to my 1997.
1995 SE - soon to be a 3.8 turbo car.
1990 TSTE x 2 white cloth
1990 TSTE x 1 maroon leather
1990 TGP - 5 speed.

GutlessSupreme

I'm pretty sure they started getting roller rockers earlier than that...
-Tony
gtsdurango.net
'04 Dakota SLT Quad Cab V8 AWD/4x4 - current daily
'90 Turbo Grand Prix STE - Crane H260 Cam, Getrag 282 Swap, 1.6 Rockers, Homebrewn Mildly Ported/Polished Heads/Intakes, Intrax Front Lowering Springs, KYB GR2s, 34mm Sway Bar, CS FSTB, AWeb RSTB, ES Poly Sway Bar Bushings, Cooper Cobra 245 - I'm working on it...
'92 Gutless Supreme SL - Dead
'90 Turbo Grand Prix - RIP 6-15-05

TurboGTU

94-95 3100s had them. The one to look for is the berettas since they are way easy to remove compared to a w-body.

No need to change anything other than bleed the lifters down for assymbly.
Turbocharged 88 IMSA Beretta GTX <-dam stright.
90 ASC/McLaren Black TGP.

Powermaster slowed my progress like I was piloting the Queen Mary herself--

GOT2B GM



Matt Shantz - 1990 Pontiac Turbo Grand Prix COLD A/C 80K mi, KAZ Hot Tuned, Birchtrax'ed +  a few mods  ......... 14.6829 @ 95.11 mph