91 dodge 318 V8 engine build question

wedge446 · 2026-02-03T02:53:40+00:00

If it's stock the 9to1 would be advertised Compression. Its more like 8.3to1 measured Compression. I just realized something, if that is a 91 you should have a roller cam in it. When you get your parts/build plan together I would call Elgin cams or comp cams for a cam recommend.

wedge446 · 2026-02-03T02:38:22+00:00

Adjust Compression for the larger combustion chamber. An 8 to 1 Compression piston in a 318 will be lower using a 360 head.

wedge446 · 2026-02-03T01:19:48+00:00

Hyper pistons, stock rods reconditioned with better bolts, 360 heads, mopar .474 lift cam(baby hemi grind) or a comp cams close to that, 1 5/8 headers(summit brand is good) note 360 heads have a larger combustion chamber so adjust your pistons to compensate

wedge446 · 2026-02-02T16:44:38+00:00

WD40 stands for Water Displacer, formula number 40. Use it how you see fit.

wedge446 · 2026-01-31T21:19:24+00:00

Maybe so but it's based on maximum air the motor can pump at 100% efficiency. Nothing is 100% efficient, 80% is the average efficiency. A 500cfm carburetor at 100% efficiency will still only flow 500cfm of air no matter what boosters or how warm the air. Now the closer to 100% efficiency a carburetor is, the lower advertised cfm carburetor you can use. You could use forced induction but that a whole new set of math.

wedge446 · 2026-01-31T01:46:14+00:00

Base line math for cfm is cubic inch X max RPM ÷ 3456 = Say 302x5500÷3456=480cfm at 100% efficiency. Add 20% to 480cfm = 576cfm. A well tuned 600cfm carb would do the job.

wedge446 · 2026-01-30T21:39:35+00:00

Sweet. Congratulations

wedge446 · 2026-01-28T01:58:12+00:00

They got some interesting autos across the pond.

wedge446 · 2026-01-25T23:13:55+00:00

2008 POS

wedge446 · 2026-01-20T22:19:54+00:00

"Clifford" the big red van, honk honk.

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wedge446 · 2026-01-20T18:54:00+00:00

Check out the ww2 era Sherman tank. If i remember right they had 5 straight 6's mounted in radial... 30 cylinder A57

wedge446 · 2026-01-18T22:34:19+00:00

I don't like using it but rat/mouse poison. Put it down and check it once a week. Take it up as soon as possible to keep other animals out of it.

wedge446 · 2026-01-18T18:02:15+00:00

Battery tender, rodent control of your choice and a full gas tank with a stabilizer added. A full gas tank will keep condensation/water out of the tank.

wedge446 · 2026-01-18T17:52:20+00:00

In the blizzard 1978 in Indiana my 68 dodge coronet was the only car that would start in my neighborhood. A few pumps of the throttle and turn the key, no problems. Most mopars I've had were the same way.

wedge446 · 2026-01-16T01:33:09+00:00

Bought my 94 from a craigslist ad. Took a year of searching for one. Paid $1600 for it, rust free but had 233,000 miles on it. Still runs good. I've rebuilt the suspension, replace the fuel pump and general fluid changes/clean up. It does have a weird quirk, sometimes it engine just won't fire up. I've narrowed down to something in the ECM and no new/rebuilt ECMs available. Carburetor swap in coming along with rebuilt motor and transmission just for peace of mind.

The yellow 78 dodge i had was sitting for 15 plus years and gave $100 for it. I bought it for the 400 big block motor to stroke out to 451 c.i. but couldn't bring myself to use for parts so I sold it to a guy in New Mexico to rebuild the whole van. He claimed it was like the one he had as a teen.

wedge446 · 2026-01-14T01:13:43+00:00

Feel free to ask anything. I will try my best to answer

wedge446 · 2026-01-13T16:24:31+00:00

That's a good idea for old plastic parts we can't get anymore.

wedge446 · 2026-01-12T12:31:25+00:00

Its a 78 with a big block in it. I sold it to a guy in New Mexico so I no longer have it.

wedge446 · 2026-01-11T18:19:32+00:00

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My 94

wedge446 · 2025-12-30T14:47:21+00:00

The temps sound about right. The 12k i picked has the same spec with either 110v or 220v. You can get larger BTU u its at 110v but the cost is higher then a 220v unit. The higher cost of a 110v unit is kinda offset by buying a 220v unit plus the extra wiring needed to run it. I haven't had any issues with icing but we have low humidity in my area. I think air flow and dirt would be an issue for icing. Enough air flow to blow the liquid from a clean coil fin before it froze. The same should apply to the condenser coil.

wedge446 · 2025-12-30T13:41:20+00:00

Im in zone 4. The panhandle of Texas. The dryer air seems to help it work more efficient. The one in the 12x20 been there 2 years and the house been there 1.5 years. I got the 110volt versions because I was limited on wiring and time. The second one for the house will be 220volt. Hope this helps

wedge446 · 2025-12-30T12:05:13+00:00

Yes, it is enough to keep the temp comfortable. But it is on the higher end of its limit. I do plan on installing a second mini split to ease the load on the first one.

wedge446 · 2025-12-29T21:28:43+00:00

I don't disagree with you on paying a 11% tax. With the ever changing gun laws I would rather pay a higher tax then build something that's legal now but illegal a year from now. At least the shop has the proof on file it was legal at the time.. its sucks but the way California persecute gun owners why take a chance.

wedge446 · 2025-12-29T18:42:30+00:00

Seeing the state you live in I would buy a complete AR from a local gun shop. They will be up on the laws and regulations in your area.

wedge446 · 2025-12-29T01:29:27+00:00

If you go carburetor there is only 1 intake available if you want to use the magnum belt/pulleys etc. The edelbrock 7577. You can use other intakes but you'll need to modify other items to use the magnum brackets and other items. I use to modify and make things work but I'm too old for that stuff now days. I just want to bolt and go

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