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Old 01-06-2013, 03:05 PM
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Some guidance needed...

Hey guys...been reading on here for quite some time and never piped up until now. I come from a diesel background and am no stranger to high hp boosted 12v motors, ive built quite a few.

my latest project is a 67 c10 stepside that ive done a body off resto on and now its time for the motor. i already have a super t10 trans and centerforce df clutch for it. the rear has 4.11 gears.

i have little to know experience with the performance aspect of the sbc. the truck has a fresh 355 stock rebuild that i bought the truck with but it is gutless with smog heads and such.

i have about a 3,000$ budget and im not looking to do a 383.

id like to build this thing to be able to get up and scoot and be a fun weekend toy. its not going to see the strip.

i was looping at the top end kits from summit and jegs (edelbrock and trick flow)

any help will be greatly appreciated.

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Old 01-06-2013, 03:10 PM
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I think I'd find a 6BT and throw in that thing. Modify that beast a little bit and have some fun.
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Old 01-06-2013, 03:40 PM
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I was seriously debating doing just that but i want to keep this one all chevy.
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Old 01-06-2013, 03:57 PM
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no idea what 350 you have? what performance you want to achieve? Without knowing I would start with basic bolt ons,headers/carb/ manifold/cam,w/e is left in the budget goes to the heads.
depending on trucks purpose,maybe a 4 speed auto is better? the t-10 is not super strong,so it depends how you drive.
give more details as to what you expect in the finished product/purpose of truck?
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Old 01-06-2013, 04:04 PM
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With some the 355 SBC, some decent heads (maybe vortecs?), 9:1 compression, an intake like an edelbrock performer rpm, headers, 800 CFM carburetor, and a comp cams XE250H cam, the camquest software predicts 393hp and 439 ft/lb torque. That's really good...
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Old 01-06-2013, 04:05 PM
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I know its a 4bolt main 355. Flat tops with 4 valve reliefs. The heads are 76cc smog heads with a stock gm intake. Stock hei distributer. And a stock quadrajet. Its got a set of cheapy headers that ill be upgrading.The t10 is for now
A tko 500 is my grand plan next winter when i have the money.

Unlike most guys i know what power feels like and i know tq is most important in my case because of the truck. Id loveve to have a real 350-450hp thats still streetable. This truck will be a weekend cruiser..no highway or drag strip

Id also like the cam to make a little noise if possible...nothing beats a lopey small block
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Old 01-06-2013, 04:15 PM
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400 HP gen 350 is very easy. The TKO 500 has a very deep (3.27:1) first gear. Both TKOs are wide ratio. The TKO 600 (what I use) has a 2.87 first gear. do all the calculations using your tire size and rear gear ratio to find your speeds in the gears based on your engines reline.
vortec heads are not going to give you high HP with out a lot of work better spent on better heads.
400 HP is not too much to ask from vortecs, I think its possible to make 500 HP with vortecs but not easy. buy Dart SHP heads or something like that for over 400 HP using a 350
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Old 01-06-2013, 04:21 PM
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Ive built many a motor before so im not scared to piece together something.

If i could make a fun streetable 400+hp to the wheels then i would be beyond happy
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Old 01-06-2013, 04:34 PM
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400 to the wheels is not a 400 hp engine.you are at a 500 HP engine. What parts are you starting with. what is the realistic budget.Are you assembling the engine yourself? Are you willing to use a solid lifter cam? what RPM range are you willing to tolerate. What are your preferences?
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Old 01-06-2013, 04:40 PM
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Id settle for a 400hp motor. Lets start with that. That will put me around 300-350hp to the wheels? Im perfectly fine with that. Ill be doing all assembly myself. The budget is 3,000$.
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Old 01-06-2013, 05:04 PM
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I would buy a set of modified vortecs from someone like scoggin dickey.would be nice if you could clean up the exhaust side ports or have them done.not much but some. 1 5/8s headers.a cam with around 226 intake duration/low 130s exhaust duration,485-500 lift. I would use a solid cam and roller rockers,a hydraulic cam wont lose much power but will idle a little rougher.9.2 ish CR. probably a performer intake and 750 cfm carb.balance the engine, standard care for assembly and use decent GM rods with good bolts. If budget allows a hydraulic roller cam is nice
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Old 01-06-2013, 05:26 PM
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Why not run a hyd flat tappet? I plan on using the correct oils etc as thats whats in it now.

I was looking at the s/d vortecs. Any reason to pick them over a dart, world, etc?
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Old 01-06-2013, 05:43 PM
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dart heads are better and cost more.To make 500 HP you need 270 ish intake flow and 210 plus exhaust flow to get enough A/F to make the power. With 400 HP the vortecs flow 230 CFM intake and can flow 180 exhaust and thats enough for over 400 HP.
Flat tappet hydraulic cams idle rougher than solid flat tappet cams. solid cams have faster ramps and allow better flow. I would not use a hydraulic flat tappet cam for anything over 350 HP.
I like fast revving engines with good throttle response
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Old 01-06-2013, 05:47 PM
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So if you had my budget and my truck. What combo of parts would you run? Cam, intake, carb, heads, dizzy' etc
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Old 01-06-2013, 05:55 PM
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Why not run a hyd flat tappet? I plan on using the correct oils etc as thats whats in it now.

I was looking at the s/d vortecs. Any reason to pick them over a dart, world, etc?
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