How Would you build it ???

A 1970 350 4 bolt main.......how would you build it to run a reliable 350hp on the street ??

 

30 over stock type pistons 9 1/2-10:1, comp 268h cam, pocket ported heads, 2.02/1.60 valves, edelbrock performer rpm intake, edelbrock 600cfm carb.

 

Easy....just pick up any issue of Car Craft or Hot Rod from the last 30 years.

Josh

 

I would start with 1: heads, camel hump 2: cam crane 327/350hp L-79 oem replacement 3: compression, no more than 10.1 maybe 9.5to1 flattop 4:crank stock 5:rods stock 6: intake 6x2 offy! LOL That should get you real close to where you want to be, the intake was just a joke, but would be sick, pretty much any aluminum intake would work good. The parts I listed will make a great street engine.

 

a pair of vortec heads....air gap intake ....465 lift 300/330 gm crate style cam....0 deck the block ....go to a flattop piston.....should be a easy 350 hp.....and still be easy to drive.....and a taste bit fun too.....hah brandon

 

SWEET!!!!!!!!!!!!!!! Not to be a smart ass, but he's right.

 

To make a real 350hp without ever having to tune it again...

30 over with Cast or forged flatop pistons, at zero deck
Vortec heads
A set of the guided rockers for the Vortec's, preferably aftermarket
Any split duration cam under 0.475 lift, with around 215/225 duration on a 110 lobe seperation
Edelbrock Performer RPM Airgap
Edelbrock 600cfm carb
HEI with a curve kit
Std oil pump with a late model pickup oil pickup
Windage tray

Bolt it together, set it, and forget it.

 

Build it BIG and SLOOPY. You will have a good time with something Big and Sloopy. Trust me.

 

I'd agree with RacerRick except for the following: Use Hypereutectic pistons instead of cast or forged (cheap, lighter than cheap forged, way better than a cast replacement). Full roller rockers for the replacements.

I'd look at the "power plus" performer RPM "knock off" intake - clean up the casting and port match the heads and intake (just because it's easy and cheap power)

Run the heck out of it... Just keep the cam choice so the power is well under 6k RPM if it's unbalanced (or "stock balance") should be plenty of fun for a DD.

Oh - and if you get the chance look into Dyno2000 or Engine Analyzer Pro and you can 'play' with cam choices to see what kind of power they'll make and what changes will have the most impact. Also they're good at giving a general power curve and HP peak - don't worry about the actual numbers so much as the HP/TQ curves and where you intend to run it.