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  #1  
Old 03-11-2005, 10:35 PM
Tarrbabe Tarrbabe is offline
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Default Head Question........

For a street/strip engine, what is the best bang for the buck?
Rebuild my J's and add 2.02's
Find a set of used W2's
or something else?

For a 9 1/2 cp 340 + .060
want to run the 528/284 cam for about 7000rpm's.
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  #2  
Old 03-11-2005, 10:38 PM
Fast One Fast One is offline
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with that cam & that compression I'd say the J's will do the job easy
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  #3  
Old 03-12-2005, 05:54 AM
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rumblefish360 rumblefish360 is offline
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Ditto but it won't turn that rpm. You won't need to. It's not in the cam. Port the head well.
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Old 03-13-2005, 10:24 AM
sanborn sanborn is offline
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Tarrbabe, you have some choices. The "X" or "J" head can be made to work pretty well---it will take some port work, good rockers, probably 2.02/1.60" valves. And after all that you will get maybe 220-230 CFM on the intake side. It requires major work to get more than that. W2s "out of the box" flow in the 250-255 CFM range. W2s like RPM but can work in the 7000 range if used with a mild cam(like the one you want to use).

You missed the "fire sale" on W2s in middle Tennessee. Many Nashville racers have gone to the Nascar "crate" engine. And last fall there were a bunch of Ford, GM and Mopar race stuff for sale(cheap). I saw one complete 360/W2s go for $3K.

Don't even know where to direct you. You might try Tommy's Machine in Springfield. I think(??) their phone number is 615/384-5184.

Are you in school in Cookeville???
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  #5  
Old 03-13-2005, 10:36 AM
sanborn sanborn is offline
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Opps! Forget about that school question----I just noticed your age---Almost as old as I----Creak, Creak, Groan, Groan!
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  #6  
Old 03-13-2005, 07:09 PM
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pishta pishta is offline
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Dont discount the 308/576 head, it has the best exhaust port this side of a W series head, and it can go out to 2.02, or 2.06. And they are at boneyards in your area for cheap.
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Old 03-13-2005, 08:32 PM
dodger1 dodger1 is offline
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Pishta, can you (or anyone) I.D the engines equipped with these heads for us? I just saw in another post that the 308's came on late 360's and here I thought they also came with all the roller-cam 318's as well. And what were 576's bolted to? Thanks up front!!
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Old 03-13-2005, 11:57 PM
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pishta pishta is offline
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308's came on the 87-91 360's, van motors mostly. The 576 head, scarce in the boneyard as they were never put on a stock production car, was one of the MP 340 replacement heads. There was a write up on these mysterious heads in the back cover of Mopar Action some years ago, and they really liked them. The 308 heads were close enough to these heads to be mentioned along side in the sales brochure. Probably never see one, but it goes to mention.
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  #9  
Old 03-14-2005, 12:50 AM
dodger1 dodger1 is offline
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Thank you sir!! I was going to look for an O.D. Torqueflite this spring so I guess I'll look for one thats bolted to the referenced 360 and save a trip.
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  #10  
Old 03-14-2005, 01:32 AM
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perfmachst perfmachst is offline
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hello, the 576 and 308 head have the better exhaust port, true. however, it will out flow the intake port below .200 lift. this causes part of the intake charge to be pulled out on the overlap stroke. the headers will turn red, motor will loose power, and be very lean. the exhaust port is a W2 style.
the 587 head with 1.88 and bowl work will provide plenty of air for your 340.
1.88/587 head will have a higher port velocity,which fills the cylinder faster.
use the mopar sst valves ,as they flow the best. far better than the tulip style. a 587 ,with bowl blending, 1.88 sst valve can flow 204 CFM @25" test pressure, measured at .500 lift. in a 3400 # car/340, gears,slicks, calvert bars, stock body, runs 11.50 @116 MPH. just food for thought.
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  #11  
Old 03-16-2005, 03:35 AM
Tarrbabe Tarrbabe is offline
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Default Thanks........

I am still thinking this one over. I would love to have W2's but do want a good flowing head to help with the power. I disagree with the 528/284 cam wont do 7000. I've had hyd. cams of 284 duration that would do 6500 with good springs and a solid will go better.
My idea is to have a streetable but hard breathing engine that will only require an hour a week of maintaince to keep it going strong. Most likely only 100 miles a week average. I'm thinking of a really good dual plane intake or maybe a single plane air gap. I plan on forged pistons in case I want to rev it more later. I'm still thinking on the rods to use. Oil system will just be cleaned and debured with a special oiling to the timing chain and a larger sump. Also plan to use the Mopar Elec. Ign. to keep it stock looking.
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  #12  
Old 03-16-2005, 09:09 AM
sanborn sanborn is offline
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If I can be of help, just ring!
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  #13  
Old 03-16-2005, 10:09 AM
sanborn sanborn is offline
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I just saw that someone had brought back up an article entitled"Typical Oiling Modifications". It is in the Circle Track section. Not everything applies to you but would probably be worth reading---or going the full blown route is not expensive, just take time and patience.
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  #14  
Old 03-16-2005, 12:27 PM
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rumblefish360 rumblefish360 is offline
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The use of a superior head (Flow) and stiffer than normanl spring will have this cam go to 7,000 rpm. But power will drop off before that. If anything, you should cross the finish line slightly past your shift point. (Peak power)
Dyno the engine and see where it stands when your done.
I bet your power (HP) nose's over well before 7 grand.
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