Mopar 400 block 8 sleeves
- Thread starter Miszny
- Start date
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Manley said no go for warm retorque. I will leave it alone. It was false alarm on my side. I should have cleaned the water jacket before putting coolant in there.
famous bob
mopar misfit
A friend of mines son has one of the new hot mustangs , got a feeling were gonna hook up eventually --------------I wonder if they can buy new doors for them yet !
Edorion
Well-Known Member
What were you getting out of that first cam? That's the one I'm looking at for my '68 Barracuda, I've got a stock stroke 400, about 10:1 cr.
Will put it on the dyno this week and we will see, with previous engine I got 643hp with RPM heads and victor intake. I really like this cam, works great with 1.6 ratio rockers.
Well, there were problems on the dyno, my radiator hose raptured during 1st pull and we had to stop. Pull stopped at 4800rpm and it made 520hp at this rpm and 590 ft lbs at 4500 rpm. I will come back to the dyno when I fix the car, I also need to get rid of transmission leaks. Hoping for 700+ with smaller cam and close to 750 with the bigger one.
Engine was setup with only 32 degrees advance for start, I am not sure how much is too much in this case. I saw guys running 36 degrees advance with these heads. I guess pinging will limit timing, I'm using 100 octane gas.
Will report with more info.
Engine was setup with only 32 degrees advance for start, I am not sure how much is too much in this case. I saw guys running 36 degrees advance with these heads. I guess pinging will limit timing, I'm using 100 octane gas.
Will report with more info.
Car sorted and dynoed: 695hp@6800 and 640ftlb@4400 with 34 degrees of advance. Numbers are good so I didn’t even try playing with timing and jetting. This test was just to see what gains I get from cam swap.
I’m planning to take the heads off and mill them down to bring the compression up to 11.5:1 with cam swap. New cam should work better like this.
I sat down with my numbers and I discovered that I’ve made a mistake. This engine is 10.83:1 at this point.
Will also do test with 250 shot of nitrous, I gapped the rings for lots of nitrous.
I’m planning to take the heads off and mill them down to bring the compression up to 11.5:1 with cam swap. New cam should work better like this.
I sat down with my numbers and I discovered that I’ve made a mistake. This engine is 10.83:1 at this point.
Will also do test with 250 shot of nitrous, I gapped the rings for lots of nitrous.
MOPAROFFICIAL
Oogliboogli
Guy over here just paid 1000 for a 340 w/8 sleeves. Bought block outright already done. Local shop has some motors that were ditched because they were worn out n used up...so they've been just sleeviing them and putting up for sale.
MOPAROFFICIAL
Oogliboogli
Great
I think if done properly this will work well, but in the end I didn’t sleeve my block.
JohnnySpeed
Active Member
JohnnySpeed
Active Member
I just had 3 put in my 440, was it right, eh, maybe not I'm at 800.00 with my 69 440 engine. That was in So Cal America. So 250 for block and hot tank, magflux, decking, cam bearings, oil plugs, 3 sleeves and bore .40 over. And I'm still at possible line bore, piston fit, freeze plugs. Usually 120.00 per sleeve is what they charged me. I personally like the sleeves, I believe its stronger metal, would I have liked all sleeved, yes, not sure if cooling will be unequal, not worried anymore it is what it is yes not optimal in my book for price and practicallity. At the same time I had purchased another 440 stock block with rotating assy. And heads and all for same price as the 69 bare block beginners lessons i guess. This is just so you see the contrast in my dealings.
Hi, it was good for a long time. Then my spring pressure dropped too much, I didn’t link lash change after short distance with potential problem and wheel got hammered into lifter body. There was a lot of luck as oil filter contained all the shavings and lifter body contained all the needles.
The bad is that lifter took a cam with it.
So moving on now there are two ideas for cams, both from Ken at Oregon Cam Grinders.
262/268 @.050” 430 lobes 108+4
268/272 @.050” 481/446 lobes 109+4
The 2nd one seems crazy but what your view on this?
Lift can be changed as these grinds are custom so plan was to make 450 lobes for the 1st option.
Last cam in this engine was 259/263 @.050” 450 lobes 108+4.
11:1, my converter stalled around 4500 with it. If I had say 12:1 the bigger one would sound great. Since I’m still learning I need to get more knowledgeable people opinions here.
I have around 2 weeks to make up my mind.
Yes I street drive the car a lot, but let’s say if cops see how I do it I’m in trouble, so really no sitting in traffic idling forever… It’s more like on the sticker that my buddy had in his cuda “drive it like you stole it”
Also local guy has comp 23-706-9 which is 263/270 @.050” 434 lobes 108+4.
Comp says it’s perfect for my combo…
So what do I do with this. To be honest I kinda want the big cam but still want some drivability, I take my kids to school with this thing often ;-)
The bad is that lifter took a cam with it.
So moving on now there are two ideas for cams, both from Ken at Oregon Cam Grinders.
262/268 @.050” 430 lobes 108+4
268/272 @.050” 481/446 lobes 109+4
The 2nd one seems crazy but what your view on this?
Lift can be changed as these grinds are custom so plan was to make 450 lobes for the 1st option.
Last cam in this engine was 259/263 @.050” 450 lobes 108+4.
11:1, my converter stalled around 4500 with it. If I had say 12:1 the bigger one would sound great. Since I’m still learning I need to get more knowledgeable people opinions here.
I have around 2 weeks to make up my mind.
Yes I street drive the car a lot, but let’s say if cops see how I do it I’m in trouble, so really no sitting in traffic idling forever… It’s more like on the sticker that my buddy had in his cuda “drive it like you stole it”
Also local guy has comp 23-706-9 which is 263/270 @.050” 434 lobes 108+4.
Comp says it’s perfect for my combo…
So what do I do with this. To be honest I kinda want the big cam but still want some drivability, I take my kids to school with this thing often ;-)
Coffee&Cars
Well-Known Member
drive ability is in the foot of the driver.
fratzog lover
Well-Known Member
Jim is no apprentice.
MopaR&D
Nerd Member
Jim is like a "cam guy's cam guy", you won't go wrong taking his advice. He custom ground a cam for the 360/5.9 Magnum in my Duster and I couldn't be happier with it; performs amazingly, sounds awesome and has excellent street manners. Looking to get a custom cam from him for my truck 440 build as well.
Im not worried, can’t wait for the cam!
MopaR&D
Nerd Member
That thing is gonna sound pretty rowdy for sure!
Which lifters are you using?
BAM lifters
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