BUDGET Mopar 426 Stroker Top End Assembly!
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- Опубликовано: 6 сен 2024
- The DIY budget Mopar 426 is getting retrofitted with a bunch of top end goodies in this video. It’s been a long time coming but, the day is finally here. I’ll release my spending report after I post the dedicated rocker arm video later this week. Even with the lower than expected compression, I’m still hoping this beast will be in the high 400 hp range. What do you think?
#mopar #automotive #dodge #bigblock #dragracing #enginebuilding #engine #hotrod #roadkill #plymouth
I really want to assemble an engine. But the thought of it is just flat out terrifying!!! 🤣🤣🤣🤦🏼♂️
Just gotta jump in! It’s a love/hate relationship but, very rewarding at the end of the day.
the FIRST thing is to find a "reputable" machine shop that will do a great job. (Don't spend ANY money on a core until you find a good shop!!). So ask around on forums or F/B and read their feedback. 2- is have a CELAN/DRY area that won't cause "whining" with anyone you live with, or at your friends place.: that can be used for MONTHS! and NOT BE MOVED or maybe STOLEN. 3- is to find a good rebuildable block, or one that you can hear run and check the vitals in front of you before a purchase. 4- after you assess what "parts" you need, DO YOUR RESEARCH with Jegs, Summit, Mancini etc to make sure the parts you need/want aren't back ordered. (it's frustrating, trying to fulfill your dreams while you just gave a chunk of your money away, only to find out you have to wait MONTHS!) 5- Join numerous sites or forums to gain as much knowledge as you can. Along with asking friends who have done or do this frequently. NOT every 5yrs or so.. Because if you need a specialty tool, you can borrow instead of spending $$$$ on tools that you'll not used again.
Keep EVERYTHING CLEAN!! This can get frustrating also if you don't have anywhere to "CLEAN" parts and the room to store them without humidity or lawn mower dust etc to ruin, or force you to spend more money to prep parts again..
So, here's some encouragement, MILLIONS of peeps have rebuilt cars, engines, tranny's etc that ran and served them well for YEARS! So, if you can focus your time and money, while being wise about this challenge, GO FOR IT!! There's plenty of folks to help.
The small .474" Purple Shaft will work with your 9:1 compression ratio pretty good! Due to heat loss, you will have the same fuel requirements as an 8:1 iron head engine. I would install the camshaft at 102*ICL (8 degrees advanced) and you may need to run 36-40* total timing to make the best power. I would recommend running a vacuum advance for street driving. Your intake manifold is a perfect choice! 4-hole tapered spacer and a 750 Holley!! 1-3/4" primary tube headers will work, no bigger than 1-7/8" primary size, and NO CHAMBERED mufflers, use straight though perforated tube designs with packing.
It’ll be pretty nice to run 87 or 89 octane at the pump. Definitely running the vacuum advance and I’m currently starring at a set of hooker headers with 1-7/8 tubes 🤘🏻
Lookin forward to more on this.😬
My piggybank horsepower build is waaaay behind schedule. I think I’ll be the last to finish. And last to start. Gees.
Just gotta put it on the schedule lol
That's a good cam i had one in a mild 440. I have a couple of those distributor hold downs if you need one.
no quench is worse than compression, deck the block, good gasket choice
That plated water pump is way to go, less cavatation, more flow
u do not want grade 8 bolts they require too much torque to give proper stretch load, using stock torque spec does not give any stretch, they come loose easier
Definitely concerned with the lack of a good quench in this build. If I were set on this going into a purpose-built fast car, I would probably swap the pistons to rectify the issue. I’m leaning pretty heavily towards putting this in my Ramcharger. I figure it would make one hell of a daily driver engine.
@@sorta_stock yep have to run better gas and it will run hotter in the chamber, take more throttle to get the same power. however 400s were like that stock how did the piston vendor screw up that bad looks like 1/8 down otherwise so far so good. with no quench your timing window is narrower it's the low plug location that is also a problem, you get pre ignition or detonation on the other (intake) side of the piston (chamber) I do not remember, do those heads have a modern chamber or stock like?
Cool 😎
Uh.. pretty sure at 4:42 that’s the ‘Water Pump’ housing you’ve got.. haha.. at least I’m paying attention, right! Love Your Work!! Carry On!!!
lol you got what I meant. Nice catch!
10.08 is only .028 taller than 9.98. therefore,it appears that you simply used the wrong pistons. If you still managed to achieve 9:1 with the 75 cc chambers then your street hemi grind camshaft will work well. I would degree it to confirm accurate valve timing and possibly advance it not more than 4 degrees ahead of the recommended centerline. Even that much is probably unnecessary. Good luck.
I wish it was only .028 taller. The 10.08 calc is a good .1” higher than the stock 9.98. I’ve heard a lot of good things about this cam. Excited to see how it performs.
@@sorta_stock Sorry;you are correct. I was thinking 10.008. Very strange being .100 taller than spec. Wonder how that ever happened?
Very nice. What will it go in?
Leaning towards my 77 Ramcharger but, not 100% sure yet
Good morning. Did you make any oil passages larger in the block? I bought one of those long drill bits to drill my 400 block.
Just haven't seen any videos of someone doing that. Also, what "parts" did you have to change out since you built the shortblock?
Thanks.
Morning, I did not drill out the oil passages. I did contour the openings on the main bearings slightly but, that’s about it. I have a dedicated video of the short block assembly where I went step by step.
@sorta_stock yes, saved in favorites. But didn't your recent video say that you had to change out parts? Or was it only top end stuff?
Sorry if I have confused yours with other ones.
@@blownaway4371 after building the short block and finding that my deck clearance was greater than expected, I had to rethink my top end assembly. I was originally going to go with a set of 915 heads but, decided on the E-Streets for the smaller combustion chamber and cost. I didn’t change anything on the short block.
do you not prime the oil system before installing the intermediate shaft ?
Not sure how long it’ll be before I get to fire it up. Figured I’d show the install then just pull it out when the time comes. Hoping to start it within the next month.