350 builds??? Tell Me What You Got! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70C10Step · 01-04-2008, 12:10 PM

I am about to build a mild 350 for my 70 stepside. I would like to know what heads and camshafts you guys are running on the street... I have a 4 bolt main and I will be running .040 flatops.... I am thinking some Vortec heads... Billla is already pointing me in the right direction, I just have to get there!

GMC3 · 01-04-2008, 01:46 PM

350 + .060, flat tops w/ 4 relief valves, vortec heads, compcams 262xe kit, edelbrock performer rpm, 650cfm holley vaccuum secondary. I modeled this after reading "the goodwrench Quest" where they took a gm crate motor and tried to see how much power they could make. According to the article, this combo should put me in the 350hp+ range. the article is online, so if you googled "goodwrench quest" it should come up.

70C10Step · 01-04-2008, 03:26 PM

Thanks, I am on the net looking ofr the article...

Jim_PA · 01-04-2008, 03:56 PM

I've been loving my 270H cam!

I'm very happy with what I've come up with. It's very mild mannered on the street, yet has plenty of grunt.

70C10Step · 01-04-2008, 04:12 PM

This the link for the "the goodwrench Quest"

http://www.rustpuppy.org/chp/

1bad67fleet · 01-04-2008, 04:20 PM

Go with vortec heads with a lt1 cam.For the $$ it will haul a$$!

1bad67fleet · 01-04-2008, 04:21 PM

A used lt1 cam can be had for $50

bhunt31 · 01-04-2008, 04:53 PM

Quote:

Originally Posted by 1bad67fleet

A used lt1 cam can be had for $50

Which LT1? The old one or the new one? The new one can only be used with a roller block, or you can have the specs ground into a hydraulic flat tappet.

bhunt31 · 01-04-2008, 04:57 PM

I was running a 350 4 bolt, .060 over flat tops 4 vr, with 1970-71 400 heads, fully ported, 1.94/1.60 valves, 76cc chambers, 292H cam(292/292*, .501/.501"), solid lifters, Magnum roller tipped rockers, upgraded 1.47" springs. I have pics and those heads are for sale with just under 8K miles on them. The only thing I don't suggest is that cam...it's too big for idle and vacuum quality.

scatesracing · 01-04-2008, 05:43 PM

I am running a 350 2 bolt, .060 over flat tops ,cast crank with a set of441 heads, fully ported,polished, angle milled, screw in studs guid plates 2.02/1.60 valves, 305H cam , 1.6 Harland sharp roller rockers, cut for bigger springs. I love big cams put a little timing in them and run a big converter mines a 5300. a blast on the street and 200 shot from nx dosnt hurt either

70C10Step · 01-04-2008, 05:54 PM

Keep them coming, I am going to plug all this into a spreadsheet for future examination...

01-04-2008, 12:10 PM	#1
70C10Step Registered User Join Date: Sep 2007 Location: Lompoc California Posts: 366	350 builds??? Tell Me What You Got! I am about to build a mild 350 for my 70 stepside. I would like to know what heads and camshafts you guys are running on the street... I have a 4 bolt main and I will be running .040 flatops.... I am thinking some Vortec heads... Billla is already pointing me in the right direction, I just have to get there! __________________ All Toys: 1971 C10 Fleetside - I needed it! 1970 C10 Stepside - Midlife Crisis 1969 C20 3/4 Longbed - Beast! 1966 Mustang Fastback - Daily Fun 1965 Mustang Fastback - Money pit!

01-04-2008, 01:46 PM	#2
GMC3 Registered User Join Date: Aug 2002 Location: philadelphia Posts: 62	Re: 350 builds??? Tell Me What You Got! 350 + .060, flat tops w/ 4 relief valves, vortec heads, compcams 262xe kit, edelbrock performer rpm, 650cfm holley vaccuum secondary. I modeled this after reading "the goodwrench Quest" where they took a gm crate motor and tried to see how much power they could make. According to the article, this combo should put me in the 350hp+ range. the article is online, so if you googled "goodwrench quest" it should come up.

01-04-2008, 03:26 PM	#3
70C10Step Registered User Join Date: Sep 2007 Location: Lompoc California Posts: 366	Re: 350 builds??? Tell Me What You Got! Thanks, I am on the net looking ofr the article... __________________ All Toys: 1971 C10 Fleetside - I needed it! 1970 C10 Stepside - Midlife Crisis 1969 C20 3/4 Longbed - Beast! 1966 Mustang Fastback - Daily Fun 1965 Mustang Fastback - Money pit!

01-04-2008, 03:56 PM	#4
Jim_PA Registered User Join Date: May 2005 Location: PA Posts: 2,696	Re: 350 builds??? Tell Me What You Got! I've been loving my 270H cam! I'm very happy with what I've come up with. It's very mild mannered on the street, yet has plenty of grunt. Last edited by Jim_PA; 01-04-2008 at 03:59 PM.

01-04-2008, 04:12 PM	#5
70C10Step Registered User Join Date: Sep 2007 Location: Lompoc California Posts: 366	Re: 350 builds??? Tell Me What You Got! This the link for the "the goodwrench Quest" http://www.rustpuppy.org/chp/ __________________ All Toys: 1971 C10 Fleetside - I needed it! 1970 C10 Stepside - Midlife Crisis 1969 C20 3/4 Longbed - Beast! 1966 Mustang Fastback - Daily Fun 1965 Mustang Fastback - Money pit!

01-04-2008, 04:20 PM	#6
1bad67fleet Registered User Join Date: Dec 2007 Location: east indiana Posts: 14	Re: 350 builds??? Tell Me What You Got! Go with vortec heads with a lt1 cam.For the $$ it will haul a$$!

01-04-2008, 04:21 PM	#7
1bad67fleet Registered User Join Date: Dec 2007 Location: east indiana Posts: 14	Re: 350 builds??? Tell Me What You Got! A used lt1 cam can be had for $50

01-04-2008, 04:57 PM	#9
bhunt31 krazy hillbilly from Kentucky Join Date: Feb 2007 Location: Paris, IL Posts: 121	Re: 350 builds??? Tell Me What You Got! I was running a 350 4 bolt, .060 over flat tops 4 vr, with 1970-71 400 heads, fully ported, 1.94/1.60 valves, 76cc chambers, 292H cam(292/292*, .501/.501"), solid lifters, Magnum roller tipped rockers, upgraded 1.47" springs. I have pics and those heads are for sale with just under 8K miles on them. The only thing I don't suggest is that cam...it's too big for idle and vacuum quality. __________________ 1969 Chevy CST/10 "Old School lives and breathes in the heart of a chosen few " 1984 Chevy C10 Silverado "Life, Liberty, and Ford's Pursuit of Chevy taillights" You say "Obsessed with my trucks" like it's a bad thing

01-04-2008, 05:43 PM	#10
scatesracing Machinist Join Date: Sep 2007 Location: Derby Kansas Posts: 296	Re: 350 builds??? Tell Me What You Got! I am running a 350 2 bolt, .060 over flat tops ,cast crank with a set of441 heads, fully ported,polished, angle milled, screw in studs guid plates 2.02/1.60 valves, 305H cam , 1.6 Harland sharp roller rockers, cut for bigger springs. I love big cams put a little timing in them and run a big converter mines a 5300. a blast on the street and 200 shot from nx dosnt hurt either

01-04-2008, 05:54 PM	#11
70C10Step Registered User Join Date: Sep 2007 Location: Lompoc California Posts: 366	Re: 350 builds??? Tell Me What You Got! Keep them coming, I am going to plug all this into a spreadsheet for future examination... __________________ All Toys: 1971 C10 Fleetside - I needed it! 1970 C10 Stepside - Midlife Crisis 1969 C20 3/4 Longbed - Beast! 1966 Mustang Fastback - Daily Fun 1965 Mustang Fastback - Money pit!

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