402 BB cam suggestions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

russgt · 11-14-2010, 04:34 PM

I am currently putting together a 71 402 for my 77 shortbox. Its a 4x4 with a 4 speed and 4.10 gears. 33's at the moment with a possibilities of 35s in the near future. The engine is stock bore with stock compression (8.5 to 1 I believe). We are basically just doing a rering/bearing rebuild because the bores are beautifull. I am looking for a hydraulic flat tappet cam with a good rumble and maybe a 5,500 redline. Any suggestions on a cam profile to run? I have headers, performer Rpm, and a few different holleys that I could run.

russgt · 11-14-2010, 04:55 PM

Mod, I probably should have posted this in the engine section, move me if needed.

rollinhard · 11-16-2010, 05:31 AM

Ill look for my cam specs from my 402 build iwas running alittle higher comp and my heads were cleaned up a bit but it should work for your engine aswell. I was running 4spd 4x4 35 thornbirds 4.10gears. My cam was for a little lower Rs but big torque #s I think it was rated for 1600-4000rpm range and had a farly chppy idle. Ill try to get it in the morning.
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russgt · 11-16-2010, 10:37 PM

thanks, let me know

rollinhard · 11-16-2010, 11:11 PM

heres the #s

11-14-2010, 04:34 PM	#1
russgt Registered User Join Date: May 2008 Location: Waukesha, WI Posts: 904	402 BB cam suggestions I am currently putting together a 71 402 for my 77 shortbox. Its a 4x4 with a 4 speed and 4.10 gears. 33's at the moment with a possibilities of 35s in the near future. The engine is stock bore with stock compression (8.5 to 1 I believe). We are basically just doing a rering/bearing rebuild because the bores are beautifull. I am looking for a hydraulic flat tappet cam with a good rumble and maybe a 5,500 redline. Any suggestions on a cam profile to run? I have headers, performer Rpm, and a few different holleys that I could run. __________________ 70 stepside 76 blazer 86 Silverado 20 Max Trailering 6.2 Crew 71 Nova SS My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=363634

11-14-2010, 04:55 PM	#2
russgt Registered User Join Date: May 2008 Location: Waukesha, WI Posts: 904	Re: 402 BB cam suggestions Mod, I probably should have posted this in the engine section, move me if needed. __________________ 70 stepside 76 blazer 86 Silverado 20 Max Trailering 6.2 Crew 71 Nova SS My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=363634

11-16-2010, 05:31 AM	#3
rollinhard Registered User Join Date: Jun 2010 Location: British Columbia Posts: 192	Re: 402 BB cam suggestions Ill look for my cam specs from my 402 build iwas running alittle higher comp and my heads were cleaned up a bit but it should work for your engine aswell. I was running 4spd 4x4 35 thornbirds 4.10gears. My cam was for a little lower Rs but big torque #s I think it was rated for 1600-4000rpm range and had a farly chppy idle. Ill try to get it in the morning. Posted via Mobile Device __________________ If you can't impress them with your inteligence, dazzle'm with your stupidity 1969 GMC lwb 2wheel drive can you say big stroker motor to come hehe

11-16-2010, 10:37 PM	#4
russgt Registered User Join Date: May 2008 Location: Waukesha, WI Posts: 904	Re: 402 BB cam suggestions thanks, let me know __________________ 70 stepside 76 blazer 86 Silverado 20 Max Trailering 6.2 Crew 71 Nova SS My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=363634

11-16-2010, 11:11 PM	#5
rollinhard Registered User Join Date: Jun 2010 Location: British Columbia Posts: 192	Re: 402 BB cam suggestions heres the #s Attached Images __________________ If you can't impress them with your inteligence, dazzle'm with your stupidity 1969 GMC lwb 2wheel drive can you say big stroker motor to come hehe

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