Factory 4.3L Cam Specs

[j894]

* '96-'00, VIN W, w/ balance shaft
- Lift (I/E) - .415/.429
- Dur @ .050 (I/E) - .191/.195

* '93-'96, VIN Z, w/ balance shaft
- Lift (I/E) - .376/.402
- Dur @ .050 (I/E) - .183/.193

* '92-'95, Vin W, w/ balance shaft
- Lift (I/E) - .432/.440
- Dur @ .050 (I/E) - .208/.208

* '91-'93, ZR9/Z79, Syclone/Typhoon
- Lift (I/E) - .351/.386
- Dur @ .050 (I/E) - .179/.195 (Ductile)

* '90-'91, VIN Z, Astro/Safari
- Lift (I/E) - .403/.450
- Dur @ .050 (I/E) - .202/.213 (Steel)

* '87-'94, Vin Z, w/o balance shaft
- Lift (I/E) - .351/.386
- Dur @ .050 (I/E) - .179/.195 (Ductile)

found this on s10 forum

[KRUZER1]

right on thats really good to know!

[subvelocity]

that's definitely some good info. Wish I woulda had it before I bought my cam...

[KRUZER1]

what cam (lift/duration) did you buy?

[subvelocity]

Crane. lifts are 429/430 duration 204/214 at .050. I also added 1.6 rockers

[KRUZER1]

right on were you able to dyno before and after?

[subvelocity]

No, never had it on a dyno. Went to the track with just the cam though. I was havin a lotta trouble hookin up, but at least I have a time with just that. I'll go to the track next season with the rockers (and proper preload finally) and see what difference that made. Wish I woulda gone one step up with the cam to 488/509 lift and 214/222 duration. I was concerned about passing emisisons testing though.

[KRUZER1]

right on. what did you run even though you were spinning?

[subvelocity]

a very unimpressive 16.579

[nomaboy]

i got the same cam and lifters in my truck. I went from 15.499 to 14.909

[ZR1-S10]

What's the stock cam specs on the '96+ VIN X engine?

[Sparky2263]

I found those once.....