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does it have stock manifolds with a noisy heat riser valve.?

10 cold 30 hot. 10 cold 40 hot. The 10w40 has more viscosity when hot but same on cold start.

10w30 and 10w40 are both the same weight on cold start. That's what the 10 means.

I never do it with the heads on. Dial indicator to find TDC and set the degree wheel. Do it with only #1 piston in and it's easier to get small movements, less friction.

Fel-Pro 1008 with closed chamber alum heads 10.2 comp ratio. 28,000 km and no issues

same thread as a spark plug chasing tap. use an old spark plug to help with splatter.

Steve, I used the 60775 heads because I used a roller cam, I had the pistons cut a bit to get zero deck, and a .039" gasket. Calculated it to be 10.2 cr. My cranking pressure is 182#.

Sport340... Is your speedo reading correct. the rear gear may have been changed or the trans but now it doesnt have the right speedo drive gear. kinda throws the calculations off.

seconds are good they're all over the min. open #3 top to at least .026 min like the rest.

Imo 3 is still tight. Second should be 4.00x.004= .016 min. The rest look ok. Good luck.

The KB's move the second ring a bit lower. I'd gap them all the same @ .026" +

I used the chart in post 4. I kinda remember mine were .026" for a .030" over 340 with KB pistons.

The service manual is speced for cast. The hypereutectic need more ring gap. The piston maker should tell you what gap they want. Go by that.

oh, just wondered, ive had 16 in my hemi and a set in my 340 for years and never a hiccup. Or code. I should try a different set and feel the difference.

what codes did it throw?

I use KB 243 flat Hyper and had them cut down to zero deck to work with the closed chambers and .039" gasket.

Hahaha .read funny car as "Big". 292 is pretty big for cruisin @ 2000 rpm. The engine has been run hard. I did see H beam rods went the pan was off. It has a Weiand single plane 850 dp and stock iron manifolds. Total mismatch for a cruiser .IMO

Ya probably. Ive had the oil pan off for a main seal and thats all theres numbers on the bottom of the pistons but i cant come up with any ID.

Ive been trying to tune a 340 69 Dart GTS 727 for a friend. X heads and a big (funny car sounding) cam. I dont have any idea on the specs. Car used to be (previous owner) a drag car and now friend is trying to cruise with it. Cranking pressure with the iron heads is between 185 and 200. Ive...

You said you wanted a cruiser and not be a street hero. Now your talking flow and I feel your mixing things up. Torque is king in a cruiser. With tons o' torque you dont need RPM. Ive see 6700 but most of the time I dont need to go past 4500/5000 on the street or back roads. The Edel head...

Edelbrock 63's

so I could get a tight quench .038" with closed chambers for the now gas.

I'm using a 5 speed with 2.66 first .68 5th and 3.55 rear. I'd love to try it with an auto and about 2200 converter but thats too much work, lol. The engine will pull down to 1500 in OD with out complaining if I'm careful. I dont do that much though. Desk top dyno on this combo shows a near dead...

with 5000 km it measured 182 psi. Cold

it's a Hughes roller. I remembered 108* but seems its a 110*,,,my bad

My 340, 10.2/1, +.030, flat top, zero deck, .039 gasket, 182 psi, 63cc closed Edel heads, Edel air gap, 222* 226* @108* roller, 1.6 rockers, EFI, will run on 91 no problem and maybe 89 but I havent tried. I push the timing and it likes 94. It can get 24 mpg and the power accel always brings on a...

1/4 mile is a long way off 50000 miles. Depends what OP is doing. Ive never felt a smooth, long lasting race car . We dont all build RACE CARS.

A manual trans input shaft and brg cocked .060" at the bell house spinning at 6k rpm can't be happy and run smooth (for a long time). The measurement would be higher by the time the brg see's it. Factory tolerances were not great and they said .008" so I'd try and get closer than that. I got my...

dont really need the locking feature. just get it as close as you can and wicking locktite them from the back and all good.

8 months for an engine, i commend you for patience.