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I suspect that I broke mine trying to torque a bolt that was too long in that same flange. I had Angeles Machine Works Inc. (PA Wa.) welded a stud and resurfaced the pump face in 2012. 35k miles on it so far! Good luck

always a day late and a dollar shy....

318willrun has a 5.2 in the 12 second thread that cost him less than half of what i've thrown at my old 340 and I am not in the 12 second thread.... the driver (me) is prolly most of the problem but the facts are da facts.... carry on boys don't let this thread get closed!!

Here is sorta a morph between both ideas and what I found when I removed my intake this morning! The hole in the gasket is "slightly over size of the port" so I can lay the gasket and then "slap sealer" on the metal to hold it against the head inside of the gasket cutouts. I cut two pieces...

i've had similar responses from having a little crud getting in my secondary needle, and by retarding the distributer a little too far. Are you smelling gas after stomping on it? Do you run the vacuum advance on your distributor?

so I got penalized for not registering on time by back dating the sticker! Grrr anyway it's making 40 at idle and 70 at 3000rpms at this point. thanks all

In May of 2012, one of the mounting holes in the rear main cap broke. I had a machine shop level it out and add a stud, used a gasket and a standard oil pump and drove it down the road until May of 2020. When I took it to the machine shop i snatched that pump off and noticed that gasket never...

Looks like the pump failed due to an alignment issue when installed. Everything cleaned up well and no other damage was found!! Waiting on another pump and intermediate shaft. If I get as far as the hood back on and a new inspection sticker, I'll let you know...

really? hmm my (what i think is original) intermediate shaft is 8 11/16", the tip is beveled not square but it looks like it was machined that way or at least not done recently. it's wicked shiny inside and out ??? If the motor goes back to the machine shop, it'll be the on the list of...

yes

fingers crossed! Im grasping at any glimmer of hope ... Divenut; I think this is what im looking at too. RRR; I failed to trust my old gauge. I think I get where you are going, but im having a hard time figuring out how to precisely measure that distance. Let me ask you this? Are the...

thanks all, I'll let you know what I find.

would anyone do a compression test after checking/cleaning up the bottom to see if anything is appreciably different up there?

I tried to reinsert the hex bit on my drill and it doesn't engage anything down there. there is no wear on the intermediate shaft. It seems like it was just riding over the destroyed receiver in the pump. I'll definitely be inspecting anything on the bottom but I am assuming a tear down is...

long blocked and sleeved 340. Everything new but the valve train. Primed the new pump and got oil up top before buttoning it up and installing the motor. Started right up and sounded good. While working on getting up to temperature, I noticed the top end was kinda loud and then noticed zero oil...

Update: The SCAT 48005BI is actually the forged version of their 340 offerings in a 3.58 stroke. That's the direction I went. Also, that balanced kit comes with pistons for a 4.070" bore, so if yours has been bored previously, you will want to make arrangements for bigger pistons. No big deal...

this was helpful. The multitude of shallow holes in mine were a source of much confusion. update: the SCAT stroker kit and a Comp XE275HL K kit are on the way. I was a little concerned about the 106* lobe separation on the Howard, but the matching valve train recommendations listed in the...

Thanks for the recommendation and DCR discussion. I found a calculator on gofastmath.com I believe my original cam candidate required beefier springs and larger seat clearance milled in the head. All to say I think we were kinda headed in that direction with the valve train. I would like to...

QUOTE="nm9stheham, Are you using the stock rocker package? I didn't see that question. Yes nm, that was the plan this time around. I'd like to upgrade but I've got a lot of irons in the fire right now.

[ I appreciate that I ran into something you wrote about the XE275HL, Can't remember where I saw it.

DCR is different from an actual compression ratio though correct? DCR is like an index? by all means, my cam research was pretty limited. I think the Purple MP 292/509 cam was on my short list.

nm9stheham, I'll take "pretty decent" anytime. what does the 7.75 refer to? thanks again

yes sir, that's the grind. I drive it about 5,000 miles a year. It's registered and inspected. I take it as far as Little Rock in the winter. I learned shortly after moving here that PineValley raceway was just a few miles away. Soooo I would also like to get my 60' times down a hair (1.97...

This artifact has hand ported 587’s and formerly the Comp 232-4 I’m trading for Comp 224-4 to better match my 3500 stall converter. I posted a SCAT rotating assembly kit and balancer add from Jegs earlier to get some opinions. I am going to reach out to the manufacturer when I can either way.

ok, so the wife and I are juggling our careers here at home with a 2 year old in the middle of poddy training. its a train wreck all the time around here. then The Shop, that hadn't contacted me for 4 weeks, tell me that the crank is scored quite badly. I didn't ask for much more detail than...

Any forged rotating assembly that will work gentlemen. Shop says they can "stroke it" if I want.

If it is internally balanced then this https://www.jegs.com/i/Scat/942/1-98003BI/10002/-1 ? plus a new harmonic balancer?

this is all I have here. It needed a line hone 6 years ago and that shop said the crank was just Ok then. So I went with it.... I will try to get this shop to take pictures in the morning.