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Did the same with 302 stock valve heads with a comp XE256H cam and 625 carb. Was in a truck with 3.55 gear. High idle vacuum, great off idle acceleration and surprising top end power. We beat the heck out of this towing, working and slide in old heavy camper, slightly ported stock heads did great.

My old books say: P2899206- .430" .449", 268/276. 360 4bbl HP. P4452782- .429" .444", 268/276. 340 reproduction.

To yellow rose, have learned about 70 degree timed oiling from your previous posts and would like to see your diagrams or video, want to know about bearing saddle grooving/drilling or crank drilling to accomplish this. My son's engine will be over 7500 through traps.

You are welcome.

Says so on the page!

Found this easily. 1 Set IC743.030/1 Set 4000BD8.035

Yes. We used them twice for 318 and 5.2, average stock stuff, nothing found bad. They shipped right pistons (.030”) with standard bore rings, quickly sent us .030” rings so we ended up with extra standard rings. Even the cam measured out good, I was a little surprised I didn’t find anything...

I used an Ed Performer intake, the triple primary boosters on the Street Demon give it great idle and sharp breakaway response which I liked, the large secondary gives whats needed on top. I have found that 318 valve guide heights are not even from poor factory machining and anymore than .450"...

I ran the XE 256 H in a 318 same as you have in a truck with 3.55 gears and small Street Demon . It had amazing low end grunt and surprising top end.

I used this and loved it:20-221-3 - Xtreme Energy™ Hydraulic Flat Tappet Camshafts I like this suggestion in post #5 too:http://www.lunatipower.com/Product.aspx?id=2341&gid=287

Building Beefy Blocks - Mopar Muscle Magazine

I have a 2015 pdf catalog. Download here: Downloads

Howard catalog shows spring 98438, retainer 97110. Odd thing is it says dual spring. 425 lb rate. 122lb/1.65" 353lb/1.10".

I don't understand the squabbling, the port clean up is what many here will do and the flow numbers only show an improvement that justifies the time spent. If this was a high end performance build for the track then more time and bigger numbers would be expected, but not a little 400hp street...

Was camshaft degreed when installed and have you done a compression test?

I drilled and tapped for NPT one of the horizontal bolt bosses in the back of the heads, drilled 1/8" diagonally from rocker shaft pedestal into it. Joined them with a tee and tubing from the oil pressure port beside the distributor. Ran this on the son's race car with no problems, the full time...

I ran the 256 in my truck and loved it. Ran it auto stock converter and then clutch 4 speed. Started with Carter Competition carb and when secondaries opened sounded like a muscle car but a little rich. Went to a 625 Street Demon and ran great, breakaway was instant. I put a 2bbl BBD, cats and...

Bolts are 1 7/8" long, holes are 1" deep.

See how your supplier's pricing is on Howard's Cams, try a 710031-12. Howards Cams 711381-10 1964 - 2003 Chrysler 273, 340, 360 Hydraulic Flat Tappet 1400 to 4800 Camshaft

I have the 256 in a 318 and it is perfect. I would definitely go 262 for the extra cubes and not the 268 with 1.88 valves. Check your retainer to stem clearance, to be sure for lift.

I would do the converter first and try some tuning. Is the "way too much cam for my car" due to rear axle gear?

Yes, let's see.

Yes, please post pictures of the gauge, the plugs, the car, love to see photos.

I think it's obvious to everyone here and said at least once that the black plugs and short trips are washing his cylinders and ruining his ring sealing, damage, damage, damage, but he knows best. My guess is that they all won't be 170 like #2, but I,m keeping my numbers, I just want to see an...

Oh Boy! Compression test today, finally. I got a bet on the results, if he posts to honest results.

Less talky, more worky! Wouldn't it be hilarious if this keyboard warrior didn't even have a car and was sitting in his Mom's basement.

Said on the 23rd he would do compression test the 24th and post results. Today is the 28th. There's your progress! To much arguing and not enough working!

You mean, a young fresh guy who can't build a car or tune it!

What this thread reminds me of is when my one son was a teenager and he'd argue a mechanical issue by showing me things he found on the internet. I told him to call a couple of my Mopar buddies if he didn't believe me. When we started going to Moparfest together and he spoke to some of the...

That makes no sense. Please elaborate.