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Discussion Starter · #1 ·
I'm interested in a re built 350 engine that Yearone is selling. The specs are below. In particular I'm afraid that it maybe too radical for my 3.08 gears and stock torque converter.
What do you guys think? I need to run my power brakes as well.

Engine Specifications:
·Horsepower: 400+
·Torque: 400+ ft/lbs
·Compression ratio: 9.5:1
·Dyno-tested: Yes, includes balancer and 14" flexplate
·Dyno sheet: Included with engine's output
·Vacuum produced: 12hg @ 800RPM
·Recommended fuel: 92 octane
·Max recommended RPM- 6000
·Block: Seasoned 4-bolt iron
·Crankshaft: Nodular iron
·Pistons: Hypereutectic
·Connecting rods: Powdered metal
·Camshaft- Hydraulic roller
·Valve lift:.520"
·Duration @ .050" (int/exh): 218deg/228deg
·Rocker arms: 1.6:1 ratio
·Cylinder heads: Ported Vortec
·Valves: Stainless steel 2.02 int/1.60 exh
·Valve springs: Heavy duty
·Bore x Stroke: 4.030" x 3.48"
·Intake manifold: Dual-plane aluminum
·Oil pan, timing cover, valve covers included
·Engine fasteners: High tensile strength
·Warranty: 12 month/12,000 miles
 

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3.08 gears and stock converter? Will be close!

edit
What is the LSA and what is the cam degreed in at?
 

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12hg @ 800rpm.if that # is in gear loaded against the converter,your good to go imho.:yes:
 

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That cam sounds like the GM Hot cam kit one...you'll be fine! :yes:
 

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My car was fine with 10" of vacuum (checked in park) You should be OK.

3.08 gears.... the torque will pull them better than where you're out now. Better converter would be nice though. (and better gears in the future maybe ?)
 

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I was just looking at that same engine a few minutes ago, thought I'd do a search on here... viola, someone already started a thread. Anybody have any experience with these motors?
 

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Discussion Starter · #10 ·
3.08 gears and stock converter? Will be close!

edit
What is the LSA and what is the cam degreed in at?
I've emailed Yearone for more info on the engine. Hopefully they'll reply. Whats the downside of too little gear or convertor? Poor takeoff? Engine stumble?
 

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It all depends on what you can deal with...
I'd probably stuff it in there and see how it works
but will reserve final comment until I see the LSA.
too little gear or converter and you'll be kinda or lotsa doggy taking off and have bad manners around town.....
 

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Very good-looking Chevelle, I agree
 

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Sounds like GM's hot cam, ground on a 112 LSA if memory recalls. I don't know the advance ground in, with GM it's usually not much. A slightly higher stall would be optimal but I think you will be ok, you could swap in a TH 200-4r and reap the benefits of both worlds with that rear end.
 

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i was just looking at this motor to. I am trying to decide on a crate motor or rebuilding the 327 that is in the car now. witch would be more cost effective

Thanks
Bob
 

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Discussion Starter · #17 ·
It all depends on what you can deal with...
I'd probably stuff it in there and see how it works
but will reserve final comment until I see the LSA.
too little gear or converter and you'll be kinda or lotsa doggy taking off and have bad manners around town.....

I finally got around to calling them. They provided a dyno sheet and told me the LSA of the cam was 112. He thought it was a Lunati cam. Here's the dyno. It kind of irks me that they start it at over 3000rpms. I'd really like to see what it has at 2500rpm or less.


 
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