Hybrid View
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12-09-2009 08:14 PM #1
302 ideas
Ok, I have a few different options for my 302. I am sure now that I want to run some better heads. I could go with the heads kurts buddy has or buy a different set. I was looking at the world products windsor jr. 180s. They have 58cc combustion chambers, 180cc intake and 1.94/1.60 valves. And they are pretty budget friendly at 409.99 each.
I just need to know if they will be ok for a daily driver. I am concerned with the compression ratio (pump gas). Should I run dished or flat top pistons? and what cam would work well with either choice? I would like to run my stock converter, but would consider a cheap stal. Here is an idea I have.
flat top hyperutectics and stock bottom end
windsor jr. 180s
magnum comp cam adv. dur 280 .512lift rpm range 2000-6000
1.6 ratio roller rockers
performer rpm intake
holley street avenger 670 vac sec
long tube 1 5/8 long tubes
2 1/4 dual exhuast
Please, make some suggestions. I would rather this get picked to death than build it and have an explosionyou gotta love how this list gets more expensive every time I type it
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12-09-2009 10:30 PM #2
My suggestion
I think this would be a better combination for several reasons,SBF's by design will run stronger with more exhaust duration than intake and since you will be using this as a daily strong low end and mid-range is important.This cam is a little less pricewise than the Comp so the difference in the heads will equal out.This cam will let you run the 351W and HO firing order also which is a side benefit.Click on : www.summitracing.com and put these part numbers in search: M-6049-X306 (heads) and HRS-220051(cam) The rest of your combo would work very well with this.Last edited by JeffB2; 12-09-2009 at 10:34 PM.
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12-10-2009 10:35 AM #3
What ever you do Run a windage tray in the bottom end.
It keeps the Oil from slapping the crank and slowing it down under hard acceleration.
Kurt
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12-10-2009 04:42 PM #4
Thank you both for your input. Thats weird, the 351 has a different firing order? And do you think I could possibly get away with a 625 road demon jr?
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12-11-2009 10:09 PM #5
The reason for the 5.0 and 351 firing order is it takes stress off the front main bearing the old firing order has 1 and 5 in the same position,I think that Summit Carb may work well Ford Muscle did a good Tech article on one and the price is right,I actually run a Carter Competition Series 9635S 625CFM on an RPM intake on my 302 which is the predessor to the Edelbrock Carb.And the reason I advised you to run the aluminum heads is they will be more forgiving with compression and flat tops,also SBF's run best around 170 operating temp,also in your last post you mentioned working the iron heads with the ones I recommended that won't be needed,and don't get hung up on Comp cams you can always buy their decals if it makes you feel good.Last edited by JeffB2; 12-11-2009 at 10:18 PM.
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12-10-2009 06:26 PM #6
I've installed that carb on a very mild cammed 302 with headers, works great!!! Customer was very pleased with it.... I usually run just the plain old Holley 600, but the 625 Demon IMO would be a good choice for your engine, too.Yesterday is history, tomorrow is a mystery, Live for Today!
Carroll Shelby
Learning must be difficult for those who already know it all!!!!
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12-10-2009 06:28 PM #7
you would be better off with a 600 edelbrock carb.you would get better gas milage and better low and mid range trottle responce. i have a summitt carb (copy of a ford 4100) on my 289 r-1 studebaker v-8(its a studebaker not a ford,) i like it a lot good gas milage and great throttle responce. and autolite 4100 is also a good carb.
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12-10-2009 11:38 PM #8
Here are your firing orders for the small blocks if you need them.
http://loco4fomoco.com/technical.html
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12-11-2009 12:02 PM #9
I used to run a 302 with the edelbrock rpm performer ally heads which i port matched to the same intake coupled with a edelbrock 600 carb and rpm performer cam it was an excellent package which gave outstanding mpg.
I've not had good experiences with Barry Grant carbs to be honest, I had one that had swarf in it and other similair experiences.Its aweful lonesome in the saddle since my horse died.
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12-11-2009 12:44 PM #10
I just have to know what swarf is thats a new on me.....tedI'LL KEEP MY PROPERTY, MY MONEY, MY FREEDOM, AND MY GUNS, AND YOU CAN KEEP THE CHANGE------ THE PROBLEM WITH LIBERALISM IS SOONER OR LATER YOU RUN OUT OF OTHER PEOPLES MONEY margaret thacher 1984
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12-11-2009 12:59 PM #11
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12-11-2009 01:14 PM #12
Roger
Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.
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12-11-2009 01:18 PM #13
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12-11-2009 01:30 PM #14
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12-11-2009 03:26 PM #15
And one more thing, If I were to run the comp cam with 268 adv duration, should I run dished pistons? what compression ration would a zero decked 302 get with flat tops and 58cc chambers? And could I run these heads out of the box, or get them worked a little? Ive read that they need a couple things cleaned up. Thanks
You're welcome Mike, glad it worked out for you. Roger, it's taken a few years but my inventory of excess parts has shrunk a fair bit from 1 1/2 garage stalls to about an eight by eight space. ...
1968 Plymouth Valiant 1st Gen HEMI