LQ4 budget build - Planned mods, what camshaft??
#1
LQ4 budget build - Planned mods, what camshaft??
I recently purchased an LQ4 from a 2000 Silverado. I'm going to do a basic rebuild of the engine. If I can keep the stock pistons, I will but it all depends on what the machine shop says about the condition of the pistons and the cylinders. If I need to to bore out a little and get flat top pistons I will but I would prefer to keep my budget in check. I plan on getting an LS1 Crankshaft cuz I have a T-56 for this combo. 3.70 Gears. I have iron heads that I will get milled to increase the compression ratio to above 10.0:1 and I plan porting and polishing the heads myself.
I want to run 1 3/4 inch mid-length headers with 3 inch primaries, stock truck intake and TB.
So my question is:
What is a good camshaft for this plan?
I don't want to build a 4000 RPM screamer thats hard to drive around town but I don't want a slug either.
My goal is 10.0:1 to 10.5:1 compression that will handle California's 91 Octane gas with no problems, get 400+ rwhp 400+ rwtq all within the 2000-6500 range.
I've read about the Magic Stick 3 and 4, LS6 camshaft, 224 duration...all before I realized I don't even know where to start with camshafts and I don't know anything about what numbers to look for to match my needs.
If a stock LS3 Camaro can get 420+ hp with cats and exhaust and emissions standards, I figure my 68 Camaro should be able to get there a lot easier.
What would be a good cam that'll have good low-end torque and still produce good hp numbers?
I want to run 1 3/4 inch mid-length headers with 3 inch primaries, stock truck intake and TB.
So my question is:
What is a good camshaft for this plan?
I don't want to build a 4000 RPM screamer thats hard to drive around town but I don't want a slug either.
My goal is 10.0:1 to 10.5:1 compression that will handle California's 91 Octane gas with no problems, get 400+ rwhp 400+ rwtq all within the 2000-6500 range.
I've read about the Magic Stick 3 and 4, LS6 camshaft, 224 duration...all before I realized I don't even know where to start with camshafts and I don't know anything about what numbers to look for to match my needs.
If a stock LS3 Camaro can get 420+ hp with cats and exhaust and emissions standards, I figure my 68 Camaro should be able to get there a lot easier.
What would be a good cam that'll have good low-end torque and still produce good hp numbers?
#3
I can get 317's locally for pretty cheap, but for now I have a little time, so I'm hoping I can get 799's at yard for a good deal.
What are your thoughts on a cam?
#4
12 Second Club
iTrader: (49)
Yea, the more research I do is having me lean toward (at the very least) 317's that I'd home port and polish. With the flat top LS2 pistons I bought, I've read on LS1Tech I'd have 10:1 which is fine.
I can get 317's locally for pretty cheap, but for now I have a little time, so I'm hoping I can get 799's at yard for a good deal.
What are your thoughts on a cam?
I can get 317's locally for pretty cheap, but for now I have a little time, so I'm hoping I can get 799's at yard for a good deal.
What are your thoughts on a cam?
I'm to the point I don't even recommend shelf cams anymore unless someone plans on buying a used cam for some reason. The price is so close between a shelf and custom, to me it's a no brainer.
#7
I just took the harness off and I'm going to be working on disassembling the engine for the rebuild. Once the machine shop finishes with the hot tank/magna flux and rotate/balance and I'm putting it back together, I'll give Tick a call and see what they think I should run given my goals and budget.
Still gotta get a swap oil pan for my 68'. I've heard of Mast, Moroso, Holley, and a budget LH8 [which I think may hang too low].
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#8
If your porting your "to be bought" heads it doesnt matter what you get really. Just get the cheapest set with the chamber you desire. Dont polish them either. I'll vote a 217/221 LSL lobe on 111.
#10
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Join Date: Apr 2007
Location: Seminole, OK
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My engine I just pulled out of my 2000 Silverado 6.0 had iron heads. It getting 317s and a tick torque cam, but my compression is only gonna be about 9.2:1