You and I have both preached the same thing for years here. That the Thumpr and Whiplash stuff is nothin new. Crower was doin it dang near 50 years ago!
Mopar Muscle Magazine 360
- Thread starter TrailerParkGinger
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You and I have both preached the same thing for years here. That the Thumpr and Whiplash stuff is nothin new. Crower was doin it dang near 50 years ago!
Yes ... camshaft technologies are limited, within a budget. High end h.p. number requires frequent maintenance, premium lubricant, and high expensive. We know better ,with personal experiences .
I should have also said what I do often say, imitation is the sincerest for of flattery. And there is no shame in copying the engine.
I do the same thing. Pictures at 11. LOL
Oh! You need to do a bunch of mods for safe high rpm runs.
NO! 7K is NOT safe on stock piling passages. 6500 is the max I run on stock passages ever and when I ignored it, a new engine was soon being built to replace the one that was just trashed.
I’m saying this out loud!!!
AJ is full of it!
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AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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I put a 2bbl top-end and cam on a 340 once,back in the mid 70s with some used 340 springs,Dropped it into a 65 V100 wagon with fenderwells. I called it my big-bore teener. No tach. So I dunno what it revved to, but it didn't matter.That was the second most fun car I ever had. Right up until the 904 gave up. The little 7.25 out-lasted the trans,lol. I gave the car to my little brother. He was 15 or so, and was planing ahead,lol.
I burned up a lot of trannys in the late 60s/early70s. I finally went to work in a tranny shop,in about 76, no more problems,lol.
mario03srt
Well-Known Member
All,
I did not see a final tally of the part cost. I'm having a hard time thinking that 4k is the cost. Also did they not tear down and process the block? Just a hone and pistons? More fake news? lol............
Marion
I did not see a final tally of the part cost. I'm having a hard time thinking that 4k is the cost. Also did they not tear down and process the block? Just a hone and pistons? More fake news? lol............
Marion
mario03srt
Well-Known Member
All,
I did not see a final tally of the part cost. I'm having a hard time thinking that 4k is the cost. Also did they not tear down and process the block? Just a hone and pistons? More fake news? lol............
Marion
I did not see a final tally of the part cost. I'm having a hard time thinking that 4k is the cost. Also did they not tear down and process the block? Just a hone and pistons? More fake news? lol............
Marion
Brian Hafliger
Well-Known Member
It was around 4K...much too difficult to figure exact because machining prices are different all over the country. More or less, this was an affordable recipe for Magnum based enthusiasts....based on my pick of parts that can work without too much cost or difficulty.
It's a bad little engine, I can tell you that!
Marcohotrod
Well-Known Member
great info-thanks ou812 and others. $4000 + assembly for 455 horse is very good, the old $ 10/hp ended around 1999. I am old school-cams with a ton more exhaust were good for like old ford heads with poor exhaust flow. I agree that this combo did very well on the dyno, and if money grew on trees and we tried 10 more cams I think we would have found another that was slightly more better
How would your package 8 handle the 508 purple shaft? Would it need different Pistons?
Brian Hafliger
Well-Known Member
Quite possibly....
mario03srt
Well-Known Member
OK,
Brian,
But what about actual costs to a guy in Ohio for example. Tax and Shipping, gaskets, goopy poop, fuel pump, fuel lines etc. Get a shipping quote for 2 iron heads half way across the country..... No block work, hate to say but why dump that into a 150k 5.9? I'm sure it rips arse. For how long? The numbers are surprising, so I'm super excited about my new 367 build which is very similar but with a XE274 stick AND Fi-Tech.
FYI,
Marion
Brian,
But what about actual costs to a guy in Ohio for example. Tax and Shipping, gaskets, goopy poop, fuel pump, fuel lines etc. Get a shipping quote for 2 iron heads half way across the country..... No block work, hate to say but why dump that into a 150k 5.9? I'm sure it rips arse. For how long? The numbers are surprising, so I'm super excited about my new 367 build which is very similar but with a XE274 stick AND Fi-Tech.
FYI,
Marion
I think this engine is outstanding. The thing that drove the cost up was the fact you had to buy everything. Most of us guys have parts and pieces stashed in our garages that'll bring that cost down to build basically the same motor. Like a front cover. I don't have to spend $170 or $180 on a front cover I've got six of them on the Shelf. As for a core I've got 6, 360 magnums, so the core expense is not there anymore. The out-of-pocket expense goes down by your on hand inventory stashed inside your garage.
Your build is an inspiration to anybody that wants to put a low-dollar 360 Magnum or LA motor together that makes good horsepower.
I have a question about the main bearings. In the article it mentions King MB 5534 SI bearings. In looking these bearings up I'm finding their listed as full grooved 318 bearings. was this a wrong part number?
Neat engine thank you again.
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MS 1266p are fully grooved main bearing for a 360/5.9
Fully grooved main bearing...
5.9L/360 MOPAR SMALL BLOCK LA Main Bearings - Upper and lower Groove Location
Fully grooved main bearing...
5.9L/360 MOPAR SMALL BLOCK LA Main Bearings - Upper and lower Groove Location
Brian Hafliger
Well-Known Member
Cool, thank you! I am not sure on the part#, as those were added after I proof'd the literary. The bearing we normally use are half groove, and we use Clevite, King, ACL, and FM once in a while.
Brian Hafliger
Well-Known Member
This was a DIY article...just using our recommendation on parts + good machine work. If a guy buys the core, and the bores are good, mains are good, deck is good, it's EASY!!!! If not, you can correct or try another core...I recommend talking with the Core yard so they know your looking for a pristine core, alot of times they will mark the core, and if you bring it back, they will exchange for another until you find what your looking for.
However, we are building quite a few right now, and shipped in the U.S., we are getting right at 7K, complete just like the article build.
The extra lift is fine. As long as the cam specs are the same should make about 5-15HP.
Back in the day, I had a 340 built by Fast Racing, which was Bruce Mehls(sp) shop. IIRC he was part of the Rod Shop in the '70's and they were in Groveport. They did a GREAT job!! One of my bosses ran BBC's as a division 3 racer and they built his engines as well. Wow, I hadn't thought about those guys for years.
mtolley
Well-Known Member
Im currently building a close copy of brians mopar muscle motor. I used a wiesco piston(.010 shorter ch) and decked the block accordingly. After talking with my machinist about the cost of reconditioning my tired,abused factory rods, i chose a new set of scat i beams. Using the same thumper cam, brians heads, but reusing my single plane m1. When said and done, ill have around 4k in it including rebuilding my 727. 90% of the work ive done myself, and have friends who run auto machine shops that have helped me out alot with machining costs. Engine will be going back in my d150. Truck ran 12.0s with a stock magnum longblock. intake, carb, headers. 3500 10" tight converter and 3.55's. cant wait till its back together. My single plane is gonna give up some low end torque, but should gain some hp. Was killing et streets before out the hole, so some loss down low wont be too bad.
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