Sorry, I never quite understood about it. Also, what engine did it come in? thanx

 

well i dont know the exact specs on the duration Vader could tell you that but it is in the Lg4 I know for sure I think if I am not mistaken that it was a smog cam for the 305 all i know for sure is that the cam leaves something to be desired.

 

The peanut cam is the small cam in low performance thirdgens. It came in LG4's, and L03's, and also in some LB9 automatic TPI's. It has specs like 179/190 duration and .370/.390 lift. Its really small for a cam, which is why its called a peanut.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

Spell,

The "peanut" cam, or "LA" cam, as I call it (LameAss cam), is a relatively low profile grind used in many 305s from 1986 through 1992. The same basic profile was used regardless of flat tappet ot roller lifter design. The automatic transmission cars got the car through their entire run, with teh exception of the 350 (L98) and the few B4C cars equipped with 305s. The B4C police package (SEO vehicles) got a slightly better grind, and the manual transmission 305s got a better grind yet.

Here's what I have for specs:



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Later,
Vader
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"No matter how hard you try you can't stop us now"
Adobe Acrobat Reader 4.0

 

Vader, thanks for posting the cam specs and the part numbers. I always wondered what the 305 G92 cam looked like......bob

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91 camaro RS L03 convert,
t-5, ultimate TBI mods,TBI spacer,SLP 1 5/8 headers,
3"cat back, 3.42 torsen posi,alston SFC's,Global West LCA relocation brackets

 

So does my 92 RS 305 have this peanut cam in it? I'm assuming yes, so if i swaped it out with a nice crane cam or something along those lines what kind of performance incease could i expect?

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Flowmaster,Edelbrock open filliment filter with K&N filter in it
160 stat,

 

92,

These are all cam grinds for TPI engines. TBI engines may have been given a different profile that those listed.

------------------
Later,
Vader
------------------
"No matter how hard you try you can't stop us now"
Adobe Acrobat Reader 4.0

 

Interesting about the L98 cam in 88/89 and 90/92...the duration was 5-6* longer on the earlier MAF cars than the SD cars. I wonder what the L98 TQ/HP would be if it had the longer duration cam.

Also, I notice that my 1991 GM Shop manual only shows the L98 cam for all LB9s. Only the LO-3 got the smaller cam according to GM's shop manual in 1991.

 

92RS - yup, your car has the peanut cam.

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1985 Z28, Jasper Class 1 350, Edelbrock Performer intake, Dual snorkel air cleaner, K&N, Edelbrock headers, Catco 3" cat, Hooker 3" cat-back, Richmond 3.73's, Transgo shift kit, JET Stage 2 chip, Hypertech coil, Lakewood LCA's, Powertrax locker, SSM subframes, Centerline Auto Drag's

 

i didnt think b4c had a 305 in it. i have an 85 iroc........305/tpi. auto. the tach on my car, unlike most of them, redlines at 5500. i have been told that i got a good one, without the peanut cam. ??

 

Would the cam from a G92 305 be able to swap directly over into my car?

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1991 Firebird Formula, 305, TPI, Auto...stock till I get some money!!!
Former owner of an 88 2.8 Firebird....RIP

 

All TBI engines have the 305 TPI automatic trans cam in them. The 179/194 cam, like I said.

Yes, any cam for a 305 will fit a 350. Any cam for an LT1 will fit a TPI too. But if you're switching cams, pick something better than a stock GM cam. Just remember if you have an 87 or newer engine, you need a hydraulic roller cam, not a flat tappet cam. Flat tappet cams are for 86 and older engines. Search the boards for cam recommendations, and also see the cam tech article on this website. There is lots of good info there.

 

Also, the B4C's and 1LE's had either the 350 automatic, or the 305 5-speed with the G92 option. The G92 305 cars had the exact same cam as the 350 automatic cars.

85 TPI was the only 305 automatic to not get a peanut cam. Some people think the 90-92 305 TPI automatics didnt get peanut cams either, but the ruling is still out on that one.

 

seems to me I read that my car had a 207/213 dur cam and that the peanut was limited to non-tpi 5.0s. it also says that 88-89 305350 got the bigger cam in this sites cam article listing for different cam manufacturers??
whats going on here?

Dammit I just checked and I have an 4500 yel/500red tach and now im PISSED.

to finnish other's thoughts in this discussion--- what is a good replacement cam??

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88 T/A 305 TPI--
K&N,Air foil,hypertech chip, thermostat+fanswitch
no MAF screens, no cat, dynomax exh, urethane motor+trans mounts,
SSM frame con, Bilsteins
homemade ramair.

[This message has been edited by 88305tpiT/A (edited November 26, 2000).]

[This message has been edited by 88305tpiT/A (edited November 26, 2000).]

 

Double check that chart. It says 88 305 AT has the 179/194 cam.

And did you not even read my post that said search the forums for cam recommendations, and look at the cam tech article, because this topic comes up 5 times a day?

 

Kevin-
sorry to invoke the wrath??
Its just that in the cam article under the heading "tech articles" on this site they list all 88-89 305-350 as the 207/213 and the only year for the peanut as 87.
of course it seems only natural that your explination is more telling because the tachs are different for 305 and 350.

however I have bigger fish to fry.
now that I am convinced I have the flattest V8 cam GM ever made I was wondering if I could swap in a cam with only 109deg/sep and not mess with the computer since the peanut is listed as having only this much lobe/sep.??
I hope I have not again forced you to refer to a blatantly obvious previous discussion.
thanx
James

 

Most performance cams are ground with 112º LSA, so stick with that. The cam data in the tech article is incomplete, the above data is more informative.

 

The 109 LSA is somewhat deceiving because the duration is so short. In other words there is about as much overlap as a "real" cam with a 112-115 LSA.
I replaced my peanut cam with an LT1 cam...the car runs smoother, makes a lot more power and is better on gas!

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1984 L69, IROC look, tangerine orange
305 from 87 IROC, tossed peanut cam,
replaced with LT1 cam.
Uses gas as fast as i can pump it!

 

thanx for the info

how much did it cost you for the lt1 cam and what are the numbers.
I am still debating wether or not to get world 305 torquers or corvette L98 alum.
so a cam suggestion would help.

james

 

The LT1 cams are almost identical to a 350 TPI cam, with 1.6 rockers on it. Its great if its free, but for the hassle of changing your cam, get something better. For a good 305 cam, you want something with 206 to 212 intake duration, with lift in the 460-480 range, with stock heads and springs. More lift if you have better springs. And 112 LSA.

 

Thanx again.