Stock 318 building with Justin

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as was said stay away from comp xe :)
The short 255 howard might work but the 110 lca might not pass smog and you may not need a cam with 480 lift versus one that rolls the nose over in the 450-460 range with a big 200
..................006.020..050.200
HM2063164A 252 229 206 126 0.316
HM2083190A 255 232 208 128 0.319 used in the 255 .904 shelf cam
SB HYD FLAT TAPPET CAM 206/210 LOBE LIFT .315"/.320"-113ºLSA Hughes
So the smallest Hughes is one size shorter than the smallest MOPAR Howard
but it's at 113 lca vs 110 for the howard -(overlap, vacuum-smog choice here

you might inquire of lunati what the .200 is for the 700 & 701 voodoos
lunati also had some good spring prices for pac behives

not really pushing cams just info on where to emphasize your porting
how are the heads coming?
if you have a r&d head try a 30 degree seat
 
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Wyrmrider said:
as was said stay away from comp xe :)
The short 255 howard might work but the 110 lca might not pass smog and you may not need a cam with 480 lift versus one that rolls the nose over in the 450-460 range with a big 200
..................006.020..050.200
HM2063164A 252 229 206 126 0.316
HM2083190A 255 232 208 128 0.319 used in the 255 .904 shelf cam
SB HYD FLAT TAPPET CAM 206/210 LOBE LIFT .315"/.320"-113ºLSA Hughes
So the smallest Hughes is one size shorter than the smallest MOPAR Howard
but it's at 113 vs 110 for the howard -smog choice here

you might inquire of lunati what the .200 is for the 700 & 701 voodoos
lunati also had some good spring prices for pac behives

not really pushing cams just info on where to emphasize your porting
how are the heads coming?
if you have a r&d head try a 30 degree seat
Click to expand...

I was digging around today and I found a Schneider LSP 15H , a clevite 340 stock replacement and another .528 solid. I thought I had a 256 .420 Schneider somewhere... budget budget.... was looking at some cheap 340 springs, like elgin or pioneer...maybe comp
 
Wyrmrider said:
as was said stay away from comp xe :)
The short 255 howard might work but the 110 lca might not pass smog and you may not need a cam with 480 lift versus one that rolls the nose over in the 450-460 range with a big 200
..................006.020..050.200
HM2063164A 252 229 206 126 0.316
HM2083190A 255 232 208 128 0.319 used in the 255 .904 shelf cam
SB HYD FLAT TAPPET CAM 206/210 LOBE LIFT .315"/.320"-113ºLSA Hughes
So the smallest Hughes is one size shorter than the smallest MOPAR Howard
but it's at 113 lca vs 110 for the howard -(overlap, vacuum-smog choice here

you might inquire of lunati what the .200 is for the 700 & 701 voodoos
lunati also had some good spring prices for pac behives

not really pushing cams just info on where to emphasize your porting
how are the heads coming?
if you have a r&d head try a 30 degree seat
Click to expand...
The heads and everything else is at mesa machine still. The pistons were back order till the 4th. The plan of attack...is when pistons get here ..I'll bring the pistons over to them and with a rod bearing and a ring set, so they can balance the thing. At that time i will pick up the heads and port ,flow, clean & reassemble them and return for the block, crank,rods/pistons to bring home and assemble. In the middle of all that I'll take pictures and post here. May do a live feed...ig...where you basically watch me drink beer, belch, and assemble.
 
MOPAROFFICIAL said:
I was digging around today and I found a Schneider LSP 15H , a clevite 340 stock replacement and another .528 solid. I thought I had a 256 .420 Schneider somewhere... budget budget.... was looking at some cheap 340 springs, like elgin or pioneer...maybe comp
Click to expand...
That Schneider looks like a dandy.

Part Number:30015
Grind Number:LSP-15H
Intake Duration (gross):270
Exhaust Duration (gross):290
Intake Duration (.050”):214
Exhaust Duration (.050”):224
Intake Valve Lift*:.440"
Exhaust Valve Lift*:.460"
Lobe Separation:112
Intake Valve Lash:.000"
Exhaust Valve Lash: .000"
RPM Range:
2250-6000
*Based on 1.5 Rocker Arm Ratio
 
toolmanmike said:
That Schneider looks like a dandy.

Part Number:30015
Grind Number:LSP-15H
Intake Duration (gross):270
Exhaust Duration (gross):290
Intake Duration (.050”):214
Exhaust Duration (.050”):224
Intake Valve Lift*:.440"
Exhaust Valve Lift*:.460"
Lobe Separation:112
Intake Valve Lash:.000"
Exhaust Valve Lash: .000"
RPM Range:
2250-6000
*Based on 1.5 Rocker Arm Ratio
Click to expand...
Kevin at Schneider said is was one of their best sellers and "that is a really good street cam" "makes really good power".
I believe it, just too big for this project.
I have a set of brand new in box and plastic mp performance hyd lifters I might package up with it and sell it.
I've had it on a shelf since 2006. I've always stock piled stuff, more than I have the use for.
 
MOPAROFFICIAL said:
Kevin at Schneider said is was one of their best sellers and "that is a really good street cam" "makes really good power".
I believe it, just too big for this project.
I have a set of brand new in box and plastic mp performance hyd lifters I might package up with it and sell it.
I've had it on a shelf since 2006. I've always stock piled stuff, more than I have the use for.
Click to expand...
I bet the 4x4 and California emissions is a tricky combination for cam choice.
 
toolmanmike said:
I bet the 4x4 and California emissions is a tricky combination for cam choice.
Click to expand...

You can't have a bunch of hydro carbons blowing out the pipe from too much overlap.
It's a balance. If you go look at a carb approved power max crane hydraulic roller specs for an 86 or later, for instance. Just compare the specs to let's say.. the cam I'm considering running on this engine, it's literally a trade-off here and there. The Power Max will lift it in the .460's but the @.050 duration is 198 and 200 iirr and on a 113 or more. I believe I can still access a good 90% of the peak head flow with the cam I'm considering. I have to catch myself from pushing too hard and stay on course.

@toolmanmike
I hit the x on accident. If you ever see an X from me... consider it an accident.
 
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toolmanmike said:
Then what's wrong with the Schneider? Not enough low end torque?
Click to expand...
I almost put the Schneider in my 340.
Thing is the heads peak near around .550 and I would be leaving power on the table...and i wanna see the seat of the pants feel with the same cam I had and the now ported x heads with chevy valves. Like ...I wanna how much of a power improvement the heads are. Lol
 
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MOPAROFFICIAL said:
You can't have a bunch of hydro carbons blowing out the pipe from too much overlap.
It's a balance. If you go look at a carb approved power max crane hydraulic roller specs for an 86 or later, for instance. Just compare the specs to let's say.. the cam I'm considering running on this engine, it's literally a trade-off here and there. The Power Max will lift it in the .460's but the @.050 duration is 198 and 200 iirr and on a 113 or more. I believe I can still access a good 90% of the peak head flow with the cam I'm considering. I have to catch myself from pushing too hard and stay on course.

@toolmanmike
I hit the x on accident. If you ever see an X from me... consider it an accident.
Click to expand...
It will be a interesting build for sure. Thanks
 
270-290 214.224 440/460 112

276 288 218 228 441/441 114 Sum 6901

279/289 209/220 .429/444 114 340 cam [email protected]

280/290 214/224 .443/,465 112 Elgin E936-P WG-1161

288/298 214/224 .444/467 112 PowerBeast 288H & Pontiac & ChevyTorque Beast Melling Summit

292 214 .449 Erson TQ-20 intake lobe

@Toolman leaves torque on the table as said it's a tight fit on cam timing for emissions
picking a cam from the 0.50 is fraught with peril hard to compare without knowing the lift of the adv and the .200 for power
 
Fraught with peril, indeed. This is an attempt at building in some EGR so no guarantees, and any input welcome. I’m thinking of a custom duplication of the 360 single pattern cam but grind in .430-.440 lift intake and .410-.420 exhaust. Have as much duration as is practical ground in under the curve to maximize torque without any valve train noise.
5005C1CE-1E10-4368-9C52-8F79B55D5A9C.jpeg


It’s probably going to need somewhere in the 114-116 LSA and work the exhaust port flow within 75-80% of intake flow. Although it’s probably not an option, I’m thinking the best (easiest to tune in lean) intake here is an EGR equipped Edelbrock StreetMaster. The factory single plane’67-72 two barrel iron single plane fitted with a plate EGR system might work even better.
 
Garrett Ellison said:
Fraught with peril, indeed. This is an attempt at building in some EGR so no guarantees, and any input welcome. I’m thinking of a custom duplication of the 360 single pattern cam but grind in .430-.440 lift intake and .410-.420 exhaust. Have as much duration as is practical ground in under the curve to maximize torque without any valve train noise.
View attachment 1715519158

It’s probably going to need somewhere in the 114-116 LSA and work the exhaust port flow within 75-80% of intake flow. Although it’s probably not an option, I’m thinking the best (easiest to tune in lean) intake here is an EGR equipped Edelbrock StreetMaster. The factory single plane’67-72 two barrel iron single plane fitted with a plate EGR system might work even better.
Click to expand...

Well I got an email the pistons will be here today. So that speeds things a bit.
I just remembered...
I have a holley street dominator with the 7/8 dontov cross over to equalize pulses and it has egr provision... wether or not that would be right of this is fuzzy... hmmm
 
Hell yeah. Cool build. "Grunt is necessary" LOL
 
MOPAROFFICIAL said:
I almost put the Schneider in my 340.
Thing is the heads peak near around .550 and I would be leaving power on the table...and i wanna see the seat of the pants feel with the same cam I had and the now ported x heads with chevy valves. Like ...I wanna how much of a power improvement the heads are. Lol
Click to expand...

Do we have to talk about the seat of your pants? Might be skid marks involved.
 
I’m right there with Kim, that Z series Street Dominator intake was made to meet stricter emissions requirements than the regular open plenum version. It doesn’t have the same midrange and top end grunt of the open plenum but has better low end torque. It’s probably going to be your best bet.
 
I kinda like the Street Dominator too. It's a goodun.
 
Garrett
move over to your thread
but you do not want anything to do with 360 lobes
BTDT 40 years ago
here's some specs at .004
278/282 198/199 410/412 111LCA Melling 23103 Timing 16-82 61-46 59 ovlp stock cam look where the intake closes I know I know not my ovlp numbers
278/282 197/199 410/411 111LC 2896283 Wolverine CS 4115 and the amount of lift you get with that duration, really long ramps
I threw it into the list so you can see where it fits along with the DC 260

All these cams may be too big (except the Jones) all are at .004 for those doing DCR calcs In duration order
A spread of 20 degrees advertised in the 214-224 range
note how the white box cams come in 276, 280 and 288 flavors for 214-224 cams (copycats)

264 202 461 Jones “Motorhome” @.004 ## intake lobe

270-290 214.224 440/460 112 Schneider no other matching lobes but IDK about the in/ ex spread

272 216 454 110 *** @.004 52 overlap single pattern\ Crane/ CD ***
272/284 216/218 454/480 112LCA Crane 693941 2000-5000 H-272-2-NC “Max Velocity”

276 288 218 228 441/441 114 Sum 6901
276/288 218.228 441 109 Elgin 1223P 54 ovlp

278/282 198/199 410/412 111LCA Melling 23103 16-82 61-46 59 ovlp stock cam
278/282 197/199 410/411 111LC 2896283 Wolverine CS 4115

278/278 222/222 454.454 Cam Dynamics 278H10
278/290 222/234 467/494 114LCA 2,200-5,200 Crane H278-2 and HMV-278-2-NC @.004

279/289 209/220 .429/444 114 340 cam [email protected] SP CS-644 51 overlap

280/290 214/224 .443/,465 112 Elgin E936-P WG-1161 Michgan-2053 @.004

284 206 434 74 IC stock 440 @.004 Intake
284 212 431 DC 260 @.004 ## early 115@200
284/// 221/228 430/450 110LCA P4453759AE later MP profile

288/298 214/224 .444/467 112 Crower 288H PowerBeast & Pontiac & ChevyTorque Beast **

289 220 .444 68 340 4 speed intake @.004

292/292 214/214 .449 Erson TQ-20 single pattern cam



## Jones motorhome has 50% greater duration @.275 than the DC 260 while 20 degrees shorter seat

Note that the DC 260, while having the same duration and lift than the 440, is fatter



** Melling ,(Summit (BBM) Speed Pro CS-1019R 288-298 @.006 lift MUST BE VALVE or .004 w/ 1.5 rocker 2200-5200 61 overlap



*** Cam dynamics & Crane 15505 272H10, Elgin 1789P, Summit 1789

“largest stock engine cam works best with 9:1 and gears 1,500-5200”
 
Yes agree the old lazy 360 lobes are a dinosaur. Was thinking of closer to the roller 360 grind on the LSA of 117 to minimize overlap (but not quite as extreme as that) and similar lifts to most 360 stock cams but that's where the similarities ended. Those stock cam profiles are more for a reference point to show what the factory ran and met emission standards at the time.
I suggested more intake than exhaust lift, single pattern duration in the 252-256 range but a on a custom grind with a faster lobe like the Jones motor home cam. Fast enough lobes for improved performance, but not so fast as to make for a noisy or unreliable valvetrain.
 
There's a place for everything. Dinosaur lobes can come in handy if you're building a street only engine and want your valve train to last.
 
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