My stock stroke mild 360 build ;)

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mopardude318

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This engine is going in a ‘74 W200 with 4.10 gears, 33” tires and a NP435 4 speed. Kinda just wanted a stock rebuild with a little more compression. I had a local machine shop do the assembly this time.

360 .030 over
Speed Pro H116cp pistons .003” from the deck
Stock cast crank & rods recon’d with ARP bolts.
Pretty mild cam:
.429” In .442” Ex
210* In 220* Dur @ .050”
LSA 108/116
(PN for that cam is 2899206)
Chrysler Dodge Mopar V8 Camshaft Stage 2 429/442 Cam MC1735

my plans then changed I was going to use stock heads but went with the SpeedMaster assembled heads. So my compression may be a touch high...based off of summit calculator: 10.48:1 with .039 Felpro 1008 head gasket

I’ll probably use stock rockers and pushrods if I can.

the only intake I have at the moment is a Performer RPM Air Gap so that’ll be it.

I’m open to further suggestions. I need to install an oil pump/pickup. Is a moly coated fuel pump eccentric “essential”?
 
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View attachment 1715655415 View attachment 1715655416 View attachment 1715655417 View attachment 1715655418 View attachment 1715655419 View attachment 1715655420 This engine is going in a ‘74 W200 with 4.10 gears, 33” tires and a NP435 4 speed. Kinda just wanted a stock rebuild with a little more compression. I had a local machine shop do the assembly this time.

360 .030 over
Speed Pro H116cp pistons .003” from the deck
Stock cast crank & rods recon’d with ARP bolts.
Pretty mild cam:
.429” In .442” Ex
210* In 220* Dur @ .050”
LSA 108/116
(PN for that cam is 2899206)
Chrysler Dodge Mopar V8 Camshaft Stage 2 429/442 Cam MC1735

my plans then changed I was going to use stock heads but went with the SpeedMaster assembled heads. So my compression may be a touch high...based off of summit calculator: 10.48:1 with .039 Felpro 1008 head gasket

I’ll probably use stock rockers and pushrods if I can.

the only intake I have at the moment is a Performer RPM Air Gap so that’ll be it.

I’m open to further suggestions. I need to install an oil pump/pickup. Is a moly coated fuel pump eccentric “essential”?
Speed master aluminum heads?
Have a good valve job done on them and you'll be set for a good 520 hp potential but with that cam you have a solid 390-410hp imo but what do i know...lol
 
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That's the 340 cam the way they should have ground it. Nice build.
 
Speed master aluminum heads?
Have a good valve job done on them and you'll be set for a good 520 hp potential but with that cam you have a solid 390-410hp imo but what do i know...lol
Yes, they are the aluminum heads. I’ll use the cam I have, big limiting factor right now. :/

not sure on a valve job yet, I know I should. Mostly a cost issue, but I guess I could wait and save a little longer.
Just curious, what cam would you like to see for this?
Thanks for the comments.
 
Yes, they are the aluminum heads. I’ll use the cam I have, big limiting factor right now. :/

not sure on a valve job yet, I know I should. Mostly a cost issue, but I guess I could wait and save a little longer.
Just curious, what cam would you like to see for this?
Thanks for the comments.

I don't think so. At least not for YOUR application.That thing is gonna shove your eyes back in your head with torque off idle to 5500.
 
Yes, they are the aluminum heads. I’ll use the cam I have, big limiting factor right now. :/

not sure on a valve job yet, I know I should. Mostly a cost issue, but I guess I could wait and save a little longer.
Just curious, what cam would you like to see for this?
Thanks for the comments.
Only because you asked, have you seen the 318 thread and the .458/.479 cam?
You could definitely make more umph with a higher lift/faster ramp cam. But you're in good shape.
 
Your compression might be a little on the high end. Are those 65 cc heads? Are you running 93 or 91 octane? Make sure you watch/listen for any detonation when your tuning it. You may want to consider a thicker head gasket to drop your compression a bit if necessary. Perhaps others with similar combos can chime in.
 
Nice build, should run really well with what you have there. I used a very similar cam to that in a build. Great choice, should run strong! 65'
 
Your compression might be a little on the high end. Are those 65 cc heads? Are you running 93 or 91 octane? Make sure you watch/listen for any detonation when your tuning it. You may want to consider a thicker head gasket to drop your compression a bit if necessary. Perhaps others with similar combos can chime in.

yes, 65cc heads. Pump 91 is the highest available in California. I was worried about that.
 
Just have to watch the timing curve and limit or disconnect the vacuum advance.

Thicker head gasket is cheap insurance and you get to use full timing advance.
 
Just have to watch the timing curve and limit or disconnect the vacuum advance.

Thicker head gasket is cheap insurance and you get to use full timing advance.

I doubt he'll have an issue with loomimum heads, as my friend calls them. lol
 
View attachment 1715655415 View attachment 1715655416 View attachment 1715655417 View attachment 1715655418 View attachment 1715655419 View attachment 1715655420 This engine is going in a ‘74 W200 with 4.10 gears, 33” tires and a NP435 4 speed. Kinda just wanted a stock rebuild with a little more compression. I had a local machine shop do the assembly this time.

360 .030 over
Speed Pro H116cp pistons .003” from the deck
Stock cast crank & rods recon’d with ARP bolts.
Pretty mild cam:
.429” In .442” Ex
210* In 220* Dur @ .050”
LSA 108/116
(PN for that cam is 2899206)
Chrysler Dodge Mopar V8 Camshaft Stage 2 429/442 Cam MC1735

my plans then changed I was going to use stock heads but went with the SpeedMaster assembled heads. So my compression may be a touch high...based off of summit calculator: 10.48:1 with .039 Felpro 1008 head gasket

I’ll probably use stock rockers and pushrods if I can.

the only intake I have at the moment is a Performer RPM Air Gap so that’ll be it.

I’m open to further suggestions. I need to install an oil pump/pickup. Is a moly coated fuel pump eccentric “essential”?

The Summit compression calculator does not take into account the diameter of the head gasket unless you manually add that volume to your combustion volume or your piston volume, so compression ratio will likely be about 10.28 to 1, putting you more toward the safe side for your California gasoline. You should be fine. And it should be a really nice running engine.

I used the compression calculator on the Diamond Pistons website because it has more of these values available for entry for more accurate readings. I used your numbers, but I had to guess on the top ring location using .310" down, because I did not see it listed anywhere.
 
Ok so anywhere from 10.2-10.5:1. Should be good with that. Thank you all.

another small minor issue I came across today was the oil galley plug under the rear main cap was left out! Not a big deal, I have one I will install. Glad I checked. All others are in place. ;)

with that said, Will pulling the cap and installing that plug, can I just bolt the cap back on without changing the rear main seal? Or should I use a new rear main seal?
 
Ok so anywhere from 10.2-10.5:1. Should be good with that. Thank you all.

another small minor issue I came across today was the oil galley plug under the rear main cap was left out! Not a big deal, I have one I will install. Glad I checked. All others are in place. ;)

with that said, Will pulling the cap and installing that plug, can I just bolt the cap back on without changing the rear main seal? Or should I use a new rear main seal?


Use the seal you have. Just removing the cap won’t hurt it.
 
late to the party. i think that cam will be a good choice for your engine and vehicle specs.
 
Here’s the numbers I get with the calculator.

View attachment 1715655702

It appears that calculator does not account for the volume around the piston above the top ring. If I use the Diamond calculator again and set the top ring distance at zero down from the top of the piston, it comes in at 10.43 to 1, so basically the same as you are getting.
This is why I use the Diamond calculator. They account for the extra volume.
 
View attachment 1715655415 View attachment 1715655416 View attachment 1715655417 View attachment 1715655418 View attachment 1715655419 View attachment 1715655420 This engine is going in a ‘74 W200 with 4.10 gears, 33” tires and a NP435 4 speed. Kinda just wanted a stock rebuild with a little more compression. I had a local machine shop do the assembly this time.

360 .030 over
Speed Pro H116cp pistons .003” from the deck
Stock cast crank & rods recon’d with ARP bolts.
Pretty mild cam:
.429” In .442” Ex
210* In 220* Dur @ .050”
LSA 108/116
(PN for that cam is 2899206)
Chrysler Dodge Mopar V8 Camshaft Stage 2 429/442 Cam MC1735

my plans then changed I was going to use stock heads but went with the SpeedMaster assembled heads. So my compression may be a touch high...based off of summit calculator: 10.48:1 with .039 Felpro 1008 head gasket

I’ll probably use stock rockers and pushrods if I can.

the only intake I have at the moment is a Performer RPM Air Gap so that’ll be it.

I’m open to further suggestions. I need to install an oil pump/pickup. Is a moly coated fuel pump eccentric “essential”?

Okay.. real quick question, do you have the cam card do you know where the intake closes? 10.4 and that cam..that on the description says 9.5 or less compression has me wanting to check the dynamic/cranking compression.
you really don't want a gasoline engine puller or tow type truck cranking 200 PSI per cylinder 'hypothetically speaking' without some octane cushion. 91 octane isn't enough.
you'd be better off to get a diesel if you need that whereas the connecting rods can handle it and everything's built around it and you can just throw diesel swill and make all the torque you want. Just my thoughts.
 
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Okay.. real quick question, do you have the cam card do you know where the intake closes? 10.4 and that cam..that on the description says 9.5 or less compression has me wanting to check the dynamic/cranking compression.
you really don't want a gasoline engine puller or tow type truck cranking 200 PSI per cylinder 'hypothetically speaking' without some octane cushion. 91 octane isn't enough.
you'd be better off to get a diesel if you need that whereas the connecting rods can handle it and everything's built around it and you can just throw diesel swill and make all the torque you want. Just my thoughts.

yea this truck is just a fun old mud truck. Off road 4 wheel drive granny low. No towing! I don’t know exactly where the intake closes!

isn’t there a trick to install a cam a certain way to bleed off cylinder pressure? That’s a little above my realm. Lol
 
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