Hows this combo sound?

[fastback340]

This is going to be my street car
69 Barracuda.
340 9.5:1 compression
Gasket matched and bowl ported J heads (maybe Magnum heads) with 1.88/1.60 valves
Ld340 intake Eddy 600 carb
CompCams XE268 or XE274 ?

1-5/8" headers
2.5" exhaust with X-pipe

A904 with 2.77 first gear. 10" converter.
3.91s Itty Bitty 215-70-14s

I want a nice street car with good low end power and a very strong mid range pull.

[pishta]

That sounds like a very straight forward project. I would consider the magnum route. Cheaper than the J's, with their superior exhaust runners and go with the cheaper Professional Products Air-gap knock-off as it can accomadate the straight magnum bolt pattern. The LD will not work with the Magnums. 10 inch convertor? Might as well go with a stocker with that cam and those gears. Itll be a fun ride.

[fastback340]

Im trying to use as many parts as I already have. Thats the main reason for the LD340 and the 10" converter.

I also want it to look pretty stock. The Airgap wont look stock no matter what I do.

As for the the converter. Im using it now with a stock 340 cam and its working well.

[TK]

sounds AWSOME, a good clean strong engine! Go with the smaller cam.

[rumblefish360]

Since were making use of what we have and not getting crazy on everything new...

This looks to be preety good. A look into cams is key. The 268 looks to be nice. I'll have to look at the catolog later to compare.
If you allready have the J head, use it and just bowl port it. That'll be good with the LD-340. The 600 cfm is a little low on it's capacity to feed the engine. But will do. You can modify it a tad to work better.

What exactly do you have in stock?

[71blueduster]

For the XE274 Comp recommends the 995-16 springs which are dual valve springs.

Thats why I bought a XE268 instead, so I could stay with the single springs.

It should work good for you.

[fastback340]

Rumble, in stock engine wise I have everything but new pistons and the cam. Headers,intake,carb ignition will all be reuses, I also have bolth the J heads and a set of Magnum.

[rumblefish360]

What MAgnum intake do you have?
A pre-Magnum cam with use with magnum heads and rockers equal a nice lift increase and added cam intencity.

[fastback340]

Rumble if I go with Magnum heads I'll redrill them to use my LD340.

[rumblefish360]

I like that Idea myself. Nothin like free lift from Magnum heads with the LA cams. Also love my LD-340. Hell of an intake. Then again, mine is modified somewhat for use with a T-Q.
http://www.moparchat.com/forums/atta...achmentid=2617

[fastback340]

The Mags just flat out preform better.

I also have a Magnum 318 long block. Hmmm 4" cranl 390 cubes Hyd. roller. More ideas are pouring in.

[rumblefish360]

The pistons would be expensive. But it would pull like mad.

[fastback340]

They're off the shelf items now from Diamond pistons. About $500 A cam for it wouldnt be cheap though.

[rumblefish360]

Originally Posted by fastback340

They're off the shelf items now from Diamond pistons. About $500 A cam for it wouldnt be cheap though.

Really?!?!? How cool is that!?!?! Cam? Heck, thats a choice for the owner. 2 many to chose from. I'd purchase a spit pattern in the RPM sought. Leave it at that.

[fastback340]

Magnum Hyd. roller cams aren't cheap though.

[rumblefish360]

Do the "LA" block and use the magnum heads and save on cams. Reap the benny's of the 1.6 ratio on a designed 1.5 cam. Have the heads redrilled for about $60 to accept "LA" intakes.