Bottom End Shocker Build

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QuickDart360 said:
Just use a Victor 340 intake! My 360 ran much better with the victor than the airgap. I actually traded a member here for my victor 340 and love it!
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I don’t remember … I didn’t see a cam spec listed for the intended use of a max of 5500. Stroker or not, that cam &.050 is a few degrees on ether side (cam lobe design dependent) 220@.050. Probably less. The Victor need not apply. The RPM-AG is definitely the right intake. (Non-AG is fine) Then the Weiand. Then nothing that is a new in the box intake at least.

(Posting while I type a reply huh?!? :D)
 
rumblefish360 said:
I don’t remember … I didn’t see a cam spec listed for the intended use of a max of 5500. Stroker or not, that cam &.050 is a few degrees on ether side (cam lobe design dependent) 220@.050. Probably less. The Victor need not apply. The RPM-AG is definitely the right intake. (Non-AG is fine) Then the Weiand. Then nothing that is a new in the box intake at least.

(Posting while I type a reply huh?!? :D)
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I did put Bottom End in the build title...
 
67autocross said:
I have a Victor and still won't use it...this is a build I want to see make peak HP at 5500rpm
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Your missing out! Have you tried one on the street yet? It makes power down low just fine. I had bought into the idea of dual plane is the only way for any street use. That is not true! Single plane can do just fine in any street driving experience. My dart sport 360 is mostly street. 3.91's out back and a 9.5" FTI 3400-3600 stall converter.
 
QuickDart360 said:
Your missing out! Have you tried one on the street yet? It makes power down low just fine. I had bought into the idea of dual plane is the only way for any street use. That is not true! Single plane can do just fine in any street driving experience. My dart sport 360 is mostly street. 3.91's out back and a 9.5" FTI 3400-3600 stall converter.
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I have a running driving car with a Victor on it...I have personally had engines on the Dyno with both intakes...I'm going with the Air Gap...
upload_2021-8-10_11-55-26.jpeg
 
QuickDart360 said:
Only suggested since you already have it. That way you can get things rolling.
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I get it…but every small block I have watched on the dyno pulls to at least 5500 harder with an air gap over a single plane
 
67autocross said:
I get it…but every small block I have watched on the dyno pulls to at least 5500 harder with an air gap over a single plane
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but with a 4" crank it's not really a small block any more, at least not in cu in anyway. you'll miss out on 'the drive' while you wait for what you see as 'perfection'. as mentioned above use the victor you have until you get what you want. then tell us the seat of the pants difference, if you notice much of one.
 
mygasser said:
but with a 4" crank it's not really a small block any more, at least not in cu in anyway. you'll miss out on 'the drive' while you wait for what you see as 'perfection'. as mentioned above use the victor you have until you get what you want. then tell us the seat of the pants difference, if you notice much of one.
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The Victor intake is on the 450hp 340 which is currently in this lovely car…. this 416 Will be it’s replacement …

D469C480-7243-4A85-A951-19918E0AB483.jpeg
 
if you guys want to convince him to use the victor, google search some dyno results on a 408 with the intake and show that the stroker will make the torque he wants...
 
I don’t have the experience with a 400+ SBC much less with one with a Victor, 3.23’s and what ever cam works well with that combo for a mad torque monster.
 
cookietruck said:
found one that is really close to what we are looking for, how much weaker is the SV over the victor on tq??
notice the comment about the printout numbers in nm, so divide by 1.35.
3rd post has the curves graphed.

408 Stroker for street Stage 1 estimate and Stage 2 dyno result!!
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When we get to the heads done and the flow numbers I will ask for some cam opinions...it will be a custom grind for sure and I will likey call a few places Comp, Isky , Struab Tech and see what they recommend...might even send a cam to Oregon for a re-grind
 
The single plane intakes need a good bit more cam to be taken advantage of. 235*@.050? LMAO!
 
For what you want to do?
If that 360 in the link is any indication, similar cam with 8* more duration, plus or minus 2*’s.
 
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I would be expecting 235-240* @.050 with a hydro cam. add ~5-8* for a solid lifter. Ask about running a cam with .875" ford lobes. might be able to get close to .550" lift. Howards has some profiles that would get there...
if you don't mind a stinky idle, 108LSA..
 
cookietruck said:
I would be expecting 235-240* @.050 with a hydro cam. add ~5-8* for a solid lifter. Ask about running a cam with .875" ford lobes. might be able to get close to .550" lift. Howards has some profiles that would get there...
if you don't mind a stinky idle, 108LSA..
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Cam will be a soilid lifter…,
 
67autocross said:
Okay seeing that my much maligned “free cam build” didn’t go over here as well as my other engine builds like the “old school 340 build “ and the “ mild magnum 360 build “….I think it’s time to leave that free cam build off this site until some of you are more mentally prepared for it… now that does not imply that this Bottom End Shocker Build is going to follow all engine build conventional thinking…but it might be a bit closer to normal than the mild magnum was…

So here is the parts list…and unlike my other builds I will try to post prices(Canadian dollars)and part numbers

Stock bore 340 block $100
Mopar Caps $400
ARP main studs $150
Scat forged 4 inch crank $1000
Rods TBA
Pistons TBA but will be in the 10:1 range with some quench
Heads are Promaxx Shockers CNC ported…. But they will get some additional porting and valve work
Cam will be a solid lifter custom grind
Intake will be an Ed Airgap dual plane that may see some hogging

So keep in mind that this is not going to be some drag strip bracket engine that needs a 4500 stall and 4:10 gears to pull away from the stoplight…. I want the bottom end torque of a big block and peak power at 5500rpm…

as always any input is truly appreciated….but I will still do it my way in the end!
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Just to keep the prices updated the Heads cost $3000…. Can’t seem to edit the original post
 
cookietruck said:
I would be expecting 235-240* @.050 with a hydro cam. add ~5-8* for a solid lifter. Ask about running a cam with .875" ford lobes. might be able to get close to .550" lift. Howards has some profiles that would get there...
if you don't mind a stinky idle, 108LSA..
Click to expand...
I’m in the same area. A little more duration and a bit of lift to take advantage of the head flow. You’ll get there for sure.
 
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