340 advice

[300]

Hi. I,m not much of a engine guy But what is this combo.  69 340,running, 30,000 miles on it,475hp,with Barry Grant six shooter, three deuce carbs and air filter, 10.5.1 comp,93octane pump gas, complete withMSD 6al, headers,mounts,runs 90psi oil press,mounts included,HP 904 trans,3500 stall,trans cooler,lines,rad shroud,electric fan Etc, I,ve got a 70 cuda i,m doing and looking for a engine,  but it will be a 4 gear.Saw this add in a local paper for $4000.00 CDN obo Any thoughts Thanks

[MEK-Dangerfield]

What stands out to me is that 904 tranny doesn't belong. The torque converter would suggest tall gears in the rear, but this is all unimportant since you apparently have a 4-speed tranny to hook up to this engine. It sounds like quite an engine, but I honestly don't know if it's worth that much. Probably not.   

[71chally416]

Many 340's & 360's came stock with 904 trannies (or the variant 999)

[Moparal]

better first gear than a 727

[bb71challenger]

Many 340's & 360's came stock with 904 trannies (or the variant 999)

Is that true? I have never seen a 340 with anything other than a 727. I dont know about 360's because they made a 2 barrel version didnt they? Sounds odd to me for a high performance engine to come with a 904.   

[71chally416]

Yep. And many Jeeps as well. My sis had one in here '89 Cherokee sport. Over 200K and never a bit of trouble. 

[72bluNblu]

$4k is pretty steep for an engine with 30,000 miles on it. No doubt it cost more than that to build, but a lot can change in 30k miles. Does have some fairly expensive add-ons, but don't forget they're all well used.

[HemiOrange70]

I am in  and am getting my 340 done for 3k with heads, mostly stock. 10.5 is a bit high for pump gas. THe 6 shooter is worth a few bucks (1500) alone. You are paying for a trans you won't use but not a bad deal.

[71chally416]

I'm running 11.69 compression with pump gas.

[moparniac]

I'm running 11.69 compression with pump gas.

what octane and how much duration at 50   

[71chally416]

Sunoco Ultra gas is all I've used. Don't know the duration off hand. It's the old .528 Mopar solid grind with 1.7 rockers.

[300]

I,ll offer 3k he might take it, it,s been in the paper a few times, if not i,ll  build the one i got, forgot to mention i do have a 70 block and some parts around.

[lemming303]

what octane and how much duration at 50   

Aluminum heads?

[matt63]

I doubt a 475hp small block would have much left after 30k.  There is no info on what parts he has to make the hp either.  I would question that.

[71chally416]

Aluminum heads?

Commando big ports.