Thread: 4.3 v-6 buildup

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Originally Posted by pat mccarthy

there are many cams made by many hyd solid . flat and solid roller and hyd roller . custom if they have cores .gm made many rollers cams and were made here in bay city

The "W" cams rated at 200hp are the best production cams.

"Factory 4.3L Cam Specs
* '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)"

Gm did make L79 version 4.3L cam non-balance shaft both flat tappet and roller but is not in production anymore.

http://www.gmpartsdirect.com/perform...CATID=304.html

Comp cams and Crane cams are good streetable cams, Comp cams can make custom grinds for racing.