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I pulled the rockers off from the #4 cylinder to have a better look and this is what I found. This looks like it’s been this way for a long while. The base of the intake valve rocker stud has wear and so does the top of the boss where the rocker sat rattling around. There is also marks on the...

Wouldn't 30 over studs require machine work to the head? I was wondering about that. I measured 0.003 on my caliper just to see a visual on how much that was, I would be afraid that once the stud warmed up and expanded it would crack the cast boss.

I may be mistaken, it looks like the factory studs press in are 3/8" and SBC studs come in 7/16" and 3/8" threaded. the lengths look like they might work but the 3/8" thread going into the head might be the issue if the hole is already that size. I have not tried to remove any of the rocker...

I had been looking at the pinning process. from what others are showing online, they are different than the SBC studs, but I've never messed with rocker studs before. as far as drilling and pinning with an 1/8" roll pin, I can access the bosses on the head. Just not sure I want to try. I...

Rockauto shows press-in rocker studs for this engine. both standard and oversize. Not sure if this is a repair that can be done on the truck or even on the bench. may have to be done at a machine shop. I saw where the studs can be pulled with a nut and stack of flat washers and might be...

Trying to ID the block and came up with this.. block casting number is 3921968 date code is H157, other code is CON2 From what I found the casting number can be a GM 250 or 230, Date code H157 shows the 8th month, 15th day, 7th year of the decade. Meaning August, 15th 1967 Code CON2 is...

Here is a pic of the plugs for reference. starts #1 through #6 right to left.

Just reading online trying to find a repair, I am finding out that the studs may not be threaded into the head. I always thought they were threads in there. I can't specifically find that info on a 250 L6 engine though.

Yes this thing has been running on three cylinders for a while from the looks of the plugs. funny thing is it doesn't miss and runs smooth even trying to goose the throttle while sitting still. from what I can tell, three of the studs on the head holding the rockers have pulled up, I can...

with knowing the ignition module will cut out after it get hot, it still runs fine. today I decided to pull it around to the back driveway and do some simple things like have a look at the spark plugs and even do a compression test to see the overall health of the engine. mind you this engine...

I have been helping him work on the truck trying to get it to the point where it's mechanical safe and good for an every day driver. have already done lots of tuning on the ECM along with repairing several odds and ends that it needed to run and get closer to that goal. some of my posts are on...

Well as you guys have head, my son bought him a 1968 chevy C10 with a 250 straight 6 and 3 speed manual trans (floor shift) that has TBI installed from a company called Dynamic EFI. the company has since gone out of business with the owner passing on. There is not much info out there on this...

There. I added the truck details to my signature

Well guys, I need your thoughts here on my son's 68 chevy... I took my son out this afternoon so he could learn how to drive his truck (stick shift) we went out to an open parking lot so he could get used to the clutch. putted around there for a while, then ventured out to a store on the...

I'm not sure my dash would support one of those cup holders anymore. the whole dash is falling apart!

Didn't get a chance to do anything today with the trailblazer. got some other needing things done around the house but then got a severe headache. it tool 4 ibuprofen and a 4 hour nap to get back on my feet! Wife woke me up when it was 10PM with me not realizing it got that late. now I'm...

Did some much needed work on the wifes trailblazer this evening. I had planned on doing the work tomorrow during the day but it was nice outside this evening and I got a wild hair to get it done tonight! replaced both rear shocks as it had a real bouncy feeling LOL, they were both blown out...

Nice! If you remove the ash tray, you can use some MDF board on the front to close it off and cover it with some padding and material to match the interior. add some USB power ports behind the cup holders and hide an inverter under it. wire in a couple of house plugs one front and maybe one...

you can use the JB weld but don't use the quick stuff, the slow curing one will hold better. Pinching the hole will only make it crack where the pin hole is making it worse plus harder for a radiator shop to do the repair when you have no other choice. adding anything into the system to stop...

Here is a photo of a CS130 and the AD244 side by side. there are lots of sites online about this conversion. just keep in mind, there is two different types of the AD244. if you go too new of a year model, the vehicles used canbus with the ECM controlling the alternator. these will not...