Hi again, i didnt buy that other 340 engine with the piece broken off but i found a new motor it a 70 340 bored over 60 with..292 duration/509 lift camshaft.Rhoads lifters. 8 quart oil pan.LD340 intake manifold. Is this a good street friendly motor, what carb would you put on it i have a 600 cfm holley but i think its too small.

Thanks for your input

 

Friendly? Fun for sure with a clutch or hi stall and 3.55 or up gear. Yee haw.

 

Give the 600 a try..... But you might find it will need a 750 cfm holley...
Just my 2 cents..

 

Needs a Hi stall converter. If the price is cheap Go for it The block is at the end of it's life with .060 over bore

 

I agree...Lots of untold....

 

^^^^^^What they said!! No biggger than a 10" converter and no smaller than a 750 cfm, but 800 would be even more fun!

 

why do you need a cam that big? the O.E.M. cam for 68 was not that big. i have to guess you want a full out race car. and thats fine. sounds like a lot of fun. 340, 1968 Camshaft

4-Speed
.444 /.453 Lift ~ 276*/284" Duration ~ 52* Overlap

Automatic
.430/.444 Lift ~ 268*/276* Duration ~ 44* Overlap ~ 114* Center-Line
this 4 speed cam was first AND last year it was used O.E.M.

 

Define "street friendly motor."

With that cam, that is the furthest thing from "street friendly" in my book you could get

You need LOW gears

heavy clutch

REAL high stall converter

light vehicle weight

Buy a gas truck to follow you around.

 

This is What I'm talking about....

 

Street Freindly = If you can't tune it, Don't buy it!

I used the 292/509 in a low compression 318 with 2.02 T/A heads, Six Pak, 10" converter, MP Electronic distributor, 3.55:1 gears 3600lbs = 14.82 1/4 mile daily driver as a mule engine for 17,000 miles. It took a little tuning at first but ran meticulously.

As always, it's all in how commited you are to the tuneup.