350 to 400 small block

[Big Heavy]

383 stroker crank from summit or jegs about same 2-300 you will pay for that 400 pile, and you will be way better off too. Sorry to sound negative at your parade, but is true.

 

[Obwonkonobe]

@Big Heavy they're like 600 lol, and I don't trust myself to cut up my block for clearance and 600+ a machine shop for striker mods and standard stuff, way out of my league

 

[75gmck25]

How about this for a $2,600, 373 horsepower, fast-swap alternative that will get your truck on the road quickly, You will need a Vortec intake, but almost everything else from the old engine will swap right over. And when you get done you will have Vortec heads and a roller cam - not a bad combination.
https://blueprintengines.com/collec...s/gm-350-with-vortec-heads-roller-cam-1pc-rms

It may not be as much fun as picking out all the parts yourself, but I would expect the cost to be very close to what you will have in by the time you buy another engine and pay for all the machine shop work.

Bruce

 

[Obwonkonobe]

@75gmck25 i appreciate the thought but its wayy too expensive. Im gonna have to get everything off craigslist and pull stuff from yards, I can only spend a couple hundred

 

[87scotty]

Imho blueprint didn't use the right gaskets or dosnt tourque em seen heard alot of em leak oil quickly but ive never owned one so not sure

 

[twinturbo427]

An LF6 400 was a big block.

We were talking about small block 400s, not bored out 396s...

For the love of Google and all that is searchable....

LF6 or LF-6 is the 1970-72 small block 400, 2bbl engine

LS6 or LS-6 is the 454 BBC and later an Ls engine

 

[Honky Kong jr]

Save your money enjoy your truck and when You have the cash stored to build an engine then search and decide what you want a few hundred might get you the proper machine work.

 

[Obwonkonobe]

Yea that's what its starting to look like, il prob wait until i have a grand or so

 

[4WDKC]

My advice is for you to buy an 880 number block so it is provisioned for hyd. roller cams, still has fuel pump bosses. This will be a good foundation for you to build an engine on whether it be a stock 350 with more power or a 383. This block will also accept the heads on your current engine when the time comes but, i recommend a different set heads new vortecs $600 ish.

 

[peats]

on a budget, a new flat tappet cam,used vortec heads,and new or used vortec intake would really wake up that 350. that could be done on a weekend assuming the bottom end is sound. a roller cam set up is going to be pricey ($800)?

 

[Obwonkonobe]

Anyone know good part numbers for the vortecs assuming I keep a 350? All i would do to them is a home valve lap job

 

[Honky Kong jr]

Anyone know good part numbers for the vortecs assuming I keep a 350? All i would do to them is a home valve lap job

Bad part about that is Vortec heads are probably new to cracking do to a thin deck surface. They should be checked for cracks and rear f your gonna pull them at a yard take a small propane torch with you to check them.

 

[crazy4offroad]

12558062. They'll have a "sawtooth" 3 points cast into the front of the head. They're referred to as "062's" and there are also "906's" which were the earlier Vortecs with a notch cast into the front of the heads. I've heard the 906's don't have the 3 angle valve grind from the factory and rumored to be more likely to crack but they're the same casting so I don't believe it. When they crack they usually split between the cylinders or between the valves. This is one of my 906's...

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Lots of Vortec info here...
http://www.onedirt.com/tech-stories/engine/a-guide-to-vortec-vs-oe-small-block-chevy-heads/

 

[Honky Kong jr]

I believe the 906s came on 3/4 and 1 tons and the 062s on 1/2 tons

 

[crazy4offroad]

I was going to order a pair of these eventually, capable of up to 0.520" lift verses 0.460" for stock Vortecs...

https://www.summitracing.com/parts/sum-151124

Also has bigger intake runners, stock is 165cc, these are 175cc