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Search: Posts Made By: NHGuy
Showing results 1 to 25 of 418
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Forum: General Q & A
10-06-2022, 06:55 PM
Replies: 52
Views: 6,209
Posted By NHGuy

I just went through the small block version of...

I just went through the small block version of this. I had the engine apart and found the inside diameter of the oil pump feed lines and used that as a guide. Using some logic I have seen in OSO I...
Forum: General Q & A
09-14-2022, 08:34 PM
Replies: 8
Views: 695
Posted By NHGuy

I think you are going to be knocking on the door...

I think you are going to be knocking on the door of 440 horse once sorted. I got 407 horse on a 383 with the smallest runner Dart Iron Eagles. Like 165cc. I did port them though. Do all the...
Forum: General Q & A
09-14-2022, 08:03 PM
Replies: 18
Views: 1,868
Posted By NHGuy

Do you know if your cruise vacuum will be low...

Do you know if your cruise vacuum will be low enough to actuate the PV's? If so that will richen things up, as you want. And then if it's too fat at higher rpm, you can take out some jet from the...
Forum: Do It Yourself, Boating on a Budget
08-17-2022, 08:12 PM
Replies: 14
Views: 2,627
Posted By NHGuy

Congrats on your very nice build. I thought...

Congrats on your very nice build. I thought about doing a similar intake a few times but haven't made a move. I might do something similar if and when I opt for more power. My setup is for torque...
Forum: Do It Yourself, Boating on a Budget
07-23-2022, 05:50 PM
Replies: 1
Views: 710
Posted By NHGuy

oil pressure safety switch for fuel pump

Hey, long time no....post?

So, I had the 383 out this winter. Did it over, got it all done. I was just going over the oil system and discovered my oil pressure switch is leaking. It's the one...
Forum: Do It Yourself, Boating on a Budget
03-29-2022, 04:45 PM
Replies: 2
Views: 646
Posted By NHGuy

Motor is cracked, parts look used. Just thought...

Motor is cracked, parts look used. Just thought the right DIY guy might like it. But, of course, buyer beware, Always!
Forum: Do It Yourself, Boating on a Budget
03-28-2022, 08:19 AM
Replies: 2
Views: 646
Posted By NHGuy

SBC goodies

There's a SBC with lots of performance stuff on it in Canton MA for $350. MSD ignition and box. HP mechanical fuel pump with regulator, Holley carb, bypass cooling, lots of an fittings, crummy roller...
Forum: Swap Shop
03-14-2022, 03:49 AM
Replies: 1
Views: 768
Posted By NHGuy

I see this is an old thread. But what happened....

I see this is an old thread. But what happened. Did it fail? And do you still have this?
Forum: General Q & A
01-14-2022, 09:53 PM
Replies: 10
Views: 1,777
Posted By NHGuy

I have a 10:1 383 that's pretty dialed now. I...

I have a 10:1 383 that's pretty dialed now. I think you will add 7 to 8 mph.
Forum: Formula
01-14-2022, 09:43 PM
Replies: 62
Views: 13,806
Posted By NHGuy

I have the next size down, an 87 223LS. Has...

I have the next size down, an 87 223LS. Has mildly upgraded 383, not crazy, just something I can turn the key with 93 octane. I have not GPS'd it but I can get a 19 pitch Mirage to run 5200 rpm...
Forum: Do It Yourself, Boating on a Budget
09-19-2021, 06:29 AM
Replies: 2
Views: 851
Posted By NHGuy

SBC Atermarket Ignition wire routing

My wires are too long for my setup and I am getting ready to make a fitted set.
I want to do a nice neat job that stays in place and does not look all loose and floppy like I currently have.
Who...
Forum: Do It Yourself, Boating on a Budget
09-19-2021, 06:15 AM
Replies: 11
Views: 1,719
Posted By NHGuy

You'll do best with a dual plane intake. Mine has...

You'll do best with a dual plane intake. Mine has a dual plane air gap. Which allows a cooler fuel charge since the carburetor mount point is not in contact with the engine. When you look at these...
Forum: Do It Yourself, Boating on a Budget
08-28-2021, 07:39 PM
Replies: 12
Views: 4,985
Posted By NHGuy

No DVR, you missed something. It was lean at...

No DVR, you missed something. It was lean at upper mid RPM, not wide open.
I took a lakeside cabin last week and brought some tools.
Ended up with 8.5 power valve, 71 idle bleeds from oe 70's, 76...
Forum: Do It Yourself, Boating on a Budget
08-16-2021, 08:17 PM
Replies: 5
Views: 903
Posted By NHGuy

removed

removed
Forum: Do It Yourself, Boating on a Budget
08-16-2021, 08:16 PM
Replies: 5
Views: 903
Posted By NHGuy

gaad, I cannot manage this post!

gaad, I cannot manage this post!
Forum: Do It Yourself, Boating on a Budget
08-16-2021, 08:07 PM
Replies: 5
Views: 903
Posted By NHGuy

removed

removed
Forum: Do It Yourself, Boating on a Budget
08-16-2021, 07:22 PM
Replies: 12
Views: 4,985
Posted By NHGuy

Hmm. I have a marine Quickfuel 750 and it's 12.5...

Hmm. I have a marine Quickfuel 750 and it's 12.5 to 13 AFR every where except the top of my primary rpms. Where it goes to 13.4 from 3200 to 3400 rpm.
4000 pound boat with a 10.3:1 forged piston 383...
Forum: General Q & A
08-03-2021, 05:14 AM
Replies: 17
Views: 18,380
Posted By NHGuy

Thanks for reporting your resolution. Too many...

Thanks for reporting your resolution. Too many folks never come back with the answer.
Forum: General Q & A
08-03-2021, 05:11 AM
Replies: 3
Views: 763
Posted By NHGuy

Did you install the pump yourself? Did this...

Did you install the pump yourself? Did this engine have a mech pump previously?
There should have been some pump arm spring pressure to overcome when bolting the pump to the engine. If not check...
Forum: Do It Yourself, Boating on a Budget
08-01-2021, 05:47 PM
Replies: 12
Views: 4,985
Posted By NHGuy

Reversion would surprise me on a stock build, but...

Reversion would surprise me on a stock build, but folks who know these engines will tell you. You can inspect spark plugs or exhaust mani's for wetness too.
Forum: Do It Yourself, Boating on a Budget
08-01-2021, 07:30 AM
Replies: 12
Views: 4,985
Posted By NHGuy

Xlint89, I found that a 32d to 16th extra turn...

Xlint89, I found that a 32d to 16th extra turn out on the 4 idle mix screws corrected a stumble going in to gear (once engine is warm). Just a touch of idle fuel on mine. But my idle screws are not...
Forum: General Q & A
08-01-2021, 06:54 AM
Replies: 17
Views: 18,380
Posted By NHGuy

Yeah, it won't start with that low a voltage. get...

Yeah, it won't start with that low a voltage. get the battery up to full before proceeding.
Forum: Do It Yourself, Boating on a Budget
08-01-2021, 06:48 AM
Replies: 1
Views: 892
Posted By NHGuy

Nevermind, got it from documentation I had, etc

Nevermind, got it from documentation I had, etc
Forum: Do It Yourself, Boating on a Budget
07-31-2021, 08:39 AM
Replies: 1
Views: 892
Posted By NHGuy

Gimbal bearing change

I'm going to do a gimbal bearing on an Alpha 1. Don't know yet whether it's a Gen 2. And I have a jaw puller like Mercruiser suggests, so no likely issue on removal.
Or, can I just pivot the old...
Forum: Swap Shop
07-29-2021, 07:05 AM
Replies: 2
Views: 1,126
Posted By NHGuy

Blower kit with Carb, CL

[email protected]
Showing results 1 to 25 of 418
 
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