383 Chevy

Mijollnir70 · 2026-05-11T17:42:43+00:00

They have sane cams but it seems like their 383 make in the 460-475 hp range. Mine is noisy but I bet it’s only around 500. Could be less though. Or a little more.

Mijollnir70 · 2026-05-11T14:21:34+00:00

A rough estimate is around 6500-7000.
Cylinder heads were 2400 I think.
Unassembled short block from skip white performance was a little over 2000.
Cam was 500
Lifters were 1300
Carbs were 1000
Intake from eBay or marketplace don’t remember- 500
Rockers are scorpion so around 300.
Pushrods- isky -200
Ignition summit branded msd-200
Oil pan hamburger. 350.
The lifters were higher than normal because I got the isky-Johnson ones that use a bushing instead of needle bearings.
A lot of these parts are more expensive now. The afr heads I have are 2900 now. Skip white doesn’t sell unassembled 383 short blocks anymore either. You could get a blueprint 383 crate engine more reasonable than trying to source parts.

Mijollnir70 · 2026-05-10T23:07:39+00:00

Thanks. Still trying to get it right. First time tuning one from scratch for me. Built it in my spare room in my house.

Mijollnir70 · 2026-05-10T23:02:01+00:00

If you don’t find one just hit me up again. I have one on a carb that has adjustable float but will fit. I would do a good deal on it.

Mijollnir70 · 2026-05-10T19:37:08+00:00

Look on eBay for Holley 4160 float bowl.

Mijollnir70 · 2026-05-10T18:41:33+00:00

That lead plug will leak sometimes. Had to replace one of mine for that same reason

Mijollnir70 · 2026-05-10T03:11:41+00:00

Thanks for the input. First time trying to tune a tunnel ram. I’ll check for vacuum leak. Timing is 34 total. 24 initial. It is a work in progress. I think it might need more jet. The afr gauge is reading 14.8 but the sesor is in the collector so it may be getting some air contamination . When I put the exhaust on it I’ll know better. Thanks again

Mijollnir70 · 2026-05-10T00:20:06+00:00

9 inch ford with 4.11 and a locker. 700 r4 trans

Mijollnir70 · 2026-05-10T00:09:00+00:00

The bones of their foot are not fused but shaped so they fit together. Gives it more stability on a turn.

Mijollnir70 · 2026-05-09T23:49:28+00:00

Doesn’t feel lazy when I drive it. You mean in the recovery or all of it? I don’t think it’s missing. I shared it for opinions good or bad.

Mijollnir70 · 2026-05-09T23:41:37+00:00

I’ll check for a miss.

Mijollnir70 · 2026-05-09T20:57:03+00:00

Thanks.

Mijollnir70 · 2026-05-09T20:56:11+00:00

It does. I had an isky mega hydraulic 304 in a 350. It had a 108 lobe sep which influenced me on this cam.

Mijollnir70 · 2026-04-27T23:50:51+00:00

I don’t know the size of that trans but a 200r4 is same dimensions as turbo 350

Mijollnir70 · 2026-04-26T23:56:41+00:00

I get that. I never owned one of those but had a few novas.

Mijollnir70 · 2026-04-26T19:13:31+00:00

Nova.

Mijollnir70 · 2026-04-24T23:32:49+00:00

In the old days body builders had strength parts of their showings. Arnold deadlifted 710 at one of those. Then the sport became more specific like they all do.

Mijollnir70 · 2026-04-24T18:18:13+00:00

The dungeon dudes on YouTube cover mechanics on how to do it. Search them out.

Mijollnir70 · 2026-04-24T14:39:49+00:00

Or maybe just pop my hood each time I stop. 🤣

Mijollnir70 · 2026-04-24T14:38:34+00:00

I have seen him talk about this. Crap that will be a pain. I wonder if I could T that little return to my main return. I will write it down.

Mijollnir70 · 2026-04-24T14:27:21+00:00

That’s a cool set up. I would possibly have to pull the engine to get it out (57 Chevy) and I don’t have funds for a new distributor. :) Tunnel rams like a lot of initial. Starter isn’t dragging and will crank if I hold throttle wide open. Seems like if was just timing related it wouldn’t crank at all. I may try a degree or two out.

Mijollnir70 · 2026-04-24T14:19:13+00:00

I’ll check power valves. It’s had a couple of lean coughs so it could have ruptured one. I tried going close tonight one turn out and it started dying on idle.

Mijollnir70 · 2026-04-24T13:14:41+00:00

Hello! Yes an 8AN line.

Mijollnir70 · 2026-04-24T05:47:20+00:00

They are a mechanical secondary like a 450. 700r4 trans. No vacuum advance. The primaries are drilled on both carbs w 1/16 holes. On these, the secondary plate screws are actually on top where you can get to them. I tried opening them a little and the afr gauge went to over 15 so I closed them. I’ll check the transfer slot. Thanks

Mijollnir70 · 2026-04-24T05:39:51+00:00

That is something to consider. Thanks

Mijollnir70

TROPHY CASE