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

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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.