Hey i got a 88 305TPI. it has the self alighning rockers, i was thinking to get a set of Federal Mogul Stamped Steel 1.6 rockers to replace the stock 1.5

worth the 65$ ? will i get a noticible difrence being they add a small amount of lift to the crappy peanut cam?

-Stell

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1988 IROC 305TPI MINT!!
Mods= Accell SuperCoil, MSD 6A, Ported Plenum, No MAF Screans , K & N, 160 Thermostat+ Temp Switch
And Always Trying To Go Faster

 

are you sure the federal mogul rockers are self aligning? ive never seen the self aligning type sell as stamped 1.6 for that cheap

if infact they are id say go for it, either way with the peanut cam or the 5 speed cam you are gonna see an improvement. For 65 dollars you cant go wrong either.

FYI im running stamped steel 1.6 crane rockers on my motor but they are non self aligning. I cant tell you what difference it made since i dropped the motor in with a bunch of mods, but everything seems fine.

 

Can you run 1.6 ratio roller rockers on a stock tpi? it's for an L98

Wally

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86 IROC with the "unknown motor"
84 Berlinetta

 

yes

 

ya i got the SDPC catalog, pg# 78 partnumber
r-1023r. it says 87up and i called them a while back and was told that they are the self alighning ones. so good buy??? and anotherthing will this cause a major fail in the CARB emmissions test (damn NJ had to adopt it)

-Stell

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1988 IROC 305TPI MINT!!
Mods= Accell SuperCoil, MSD 6A, Ported Plenum, No MAF Screans , K & N, 160 Thermostat+ Temp Switch
And Always Trying To Go Faster

 

Wally,

I've been using Crane roller-tipped 1.6:1 rockers on my 305 with the "LA" (LameAss) cam and stock springs for about a year with no adverse effects. My research indicated that the power increase on a stock cammed 305 are supposed to be a little over 16 HP and 17 lb/ft of torque, but advertised numbers are always suspect. However, any improvement is an improvement.

Later,
Vader

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"Some Body...Someone"

 

"will this cause a major fail in the CARB emmissions test"

Who is going to notice?

The tailpipe emissions will be just fine, and no mechanic in his right mind will pull a valve cover and see what rockers are in there.

87 up are self aligning, so yea it sounds like a good deal.

 

yeah they wont pull a valve cover and even if they did stamped rockers look like any other rocker

 

What do the 1.6 RRs from SDPC cost?

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission with 2.77:1 Rear End

Current Mods: Edelbrock TES Headers, Hooker Cat-Back System, Performance Resource Chip with 160* Thermostat, Accel Ignition Components, K&N Filters, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.3 @ 97mph

 

I bought a set of Comp Cams Magnum roller tips from SDPC for $190.

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We need Perry Mason

 

One problem you may find is that on 87' and later heads, 1.6 rockers cause the pushrod to rub on the cast guide plates since the pivot is relocated closer to the valve. They don't all do this, but you may find that one or more pushrods do because of variations in the casting tolerances. In this case, the heads have to be removed and machined for clearance.

89 Transam GTA, a few bolt ons

 

Stell,
i went to the sdpc website and they dont have that part #, and all their 1.6 roller rocker arms are like 250$?? whats up

[This message has been edited by ron rizzotti (edited September 12, 2000).]

 

Ron, Try calling SDPC and ask for Steve.He will get you what you need.Before I ordered my roller tips,I was going to go with the Fed/Mogul stamped 1.6 rockers which are listed for 87 and up.I was a little skeptical,so I called Fed/Mogul and they confirmed it.

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We need Perry Mason

 

Ron, they are in the catalog i ordered from the website, i called them they had them about a month ago



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1988 IROC 305TPI MINT!!
Mods= Accell SuperCoil, MSD 6A, Ported Plenum, No MAF Screans , K & N, 160 Thermostat+ Temp Switch
And Always Trying To Go Faster

 

with the 1.6's consider a higher spring compression. you will beat the snot out of your stock springs with the added lift.

 

with the 1.6's consider a higher spring compression. you will beat the snot out of your stock springs with the added lift.

 

I was the first person to actually install 1.6's on a stock engine about 3 years ago. The Crane Gold self-aligning 1.6 full roller rockers work perfectly (same as GM performance parts rockers). I ran these rockers with the stock springs for a long period of time with no adverse effects. IMO, its a great 'bolt on'. It can be done in a few hours and will provide a nice boost. Not only do you get the benefits of lowered friction (definitely go full roller!) you also make the cam *seem* as though it has an extra degree of duration.

Good Mod!

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.587 @ 107.97mph (1.710 60ftr) on the long runner setup.
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels. Stock Wheels. No Weight Reduction.
Gunning for NA 11's with the MiniRam II and Hooker LT Headers.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org