what cam for my application - Vic Jr single plane
#1
what cam for my application - Vic Jr single plane
Hi guys,
I decided to go a different route with my build & I sold my FAST 90/90 combo to go with a single plane Vic Jr. intake for a more "old school look". That being said I need to know if I will be ok with the cam I already purchased or should I sell it & pick up something else more suited for my application. I'm not building an all out power / drag car or anything just a nice street rod. Current parts list are:
Stock LS1 bottom end from a wrecked 2004 GTO w/ 19K miles
4150 style TB (Edelbrock or Accel)
Vic Jr. intake
Frutral F13 Cam 230/232 .595/.585 114* LSA
5.3 LS heads milled to 59cc, ported by TSP with 2.02IV/1.575EV (flow ~300 cfm @ .600")
30lb SVO matched Fuel Injectors
Double gold Springs w/ Ti Retainers
Comp 7.35 Pushrods
roller rockers
Hedman Hedders long tube stepped 1 3/4" to 1 7/8" Headers with 3" collector
Under drive pulley
Vigilante torque converter with 3200 rpm stall
8.5" GM 10 bolt 3.42 posi
With this combo of parts do you think that F13 cam will still work pretty good for my application or am I giving up a lot of power under the curve? I understand once the RPM's get up there I'll still make pretty good power but I would like to keep the lower RPM power & real world streetability factor up...
It has been suggested that I look at the EPS single plane cam. Its specs are 236/248 .615"/.615" 108 LSA but that lift & duration has me worried for PTV clearance with a stock bottom end. Plus I would prefer something just a tad smoother than a lumpy 108 if possible. I understand there is no such thing as a free lunch & concessions will need to be made somewhere. Let me know what you guys think or if I will be ok with the cam I have.
I decided to go a different route with my build & I sold my FAST 90/90 combo to go with a single plane Vic Jr. intake for a more "old school look". That being said I need to know if I will be ok with the cam I already purchased or should I sell it & pick up something else more suited for my application. I'm not building an all out power / drag car or anything just a nice street rod. Current parts list are:
Stock LS1 bottom end from a wrecked 2004 GTO w/ 19K miles
4150 style TB (Edelbrock or Accel)
Vic Jr. intake
Frutral F13 Cam 230/232 .595/.585 114* LSA
5.3 LS heads milled to 59cc, ported by TSP with 2.02IV/1.575EV (flow ~300 cfm @ .600")
30lb SVO matched Fuel Injectors
Double gold Springs w/ Ti Retainers
Comp 7.35 Pushrods
roller rockers
Hedman Hedders long tube stepped 1 3/4" to 1 7/8" Headers with 3" collector
Under drive pulley
Vigilante torque converter with 3200 rpm stall
8.5" GM 10 bolt 3.42 posi
With this combo of parts do you think that F13 cam will still work pretty good for my application or am I giving up a lot of power under the curve? I understand once the RPM's get up there I'll still make pretty good power but I would like to keep the lower RPM power & real world streetability factor up...
It has been suggested that I look at the EPS single plane cam. Its specs are 236/248 .615"/.615" 108 LSA but that lift & duration has me worried for PTV clearance with a stock bottom end. Plus I would prefer something just a tad smoother than a lumpy 108 if possible. I understand there is no such thing as a free lunch & concessions will need to be made somewhere. Let me know what you guys think or if I will be ok with the cam I have.
#4
TECH Fanatic
iTrader: (13)
Eh, don't throw money away on 1.8's to add a little lift.. Instead you could do a comp cam version of the ASA cam for the same price with more lift.. Maybe something like:
226/236 .570/.578 110lsa on comp XE lobes
227/235 .614/.621 110lsa on comp LSL lobes
226/236 .570/.578 110lsa on comp XE lobes
227/235 .614/.621 110lsa on comp LSL lobes
Last edited by MM98; 03-29-2013 at 01:25 PM.
#7
TECH Fanatic
iTrader: (2)
I would In no way run the eps single plane cam in your setup. If you look In my sig you will see what I have, and its a big *** cam. Nothing wrong with the f13 in a small bore setup like yours with a small converter. The big single plane specific cams need at least a 4000 stall.
Plus if you don't like it, cam swaps are easy I can do them in a couple hours. Fact is even the stock ls1 cam picks up a ton of high rpm power with a Vic jr
This is my setup in sig
Plus if you don't like it, cam swaps are easy I can do them in a couple hours. Fact is even the stock ls1 cam picks up a ton of high rpm power with a Vic jr
This is my setup in sig
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#13
On The Tree
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I have a ESP custom ground cam not a ESP single plane cam. My camshaft is smaller that and it drove great on the no buck at all!!... It's all in the tuning !! I have a great tuner and the cam made great power with a single plane. I wish I'd kept my single plane now...
#16
TECH Senior Member
iTrader: (28)
I have a ESP custom ground cam not a ESP single plane cam. My camshaft is smaller that and it drove great on the no buck at all!!... It's all in the tuning !! I have a great tuner and the cam made great power with a single plane. I wish I'd kept my single plane now...
#17
FormerVendor
iTrader: (3)
Well, for the style intake you have combined with your current camshaft, torque will peak after 5000rpm. You have a 3200 stall which no matter what camshaft you use will keep engine rpm from flashing past 3200rpm when you go wot. If torque doesn't peak until after 5000 rpm, but your stall isn't allowing for more than 3200rpm worth of flash speed, you've now got a huge dead spot of 2000rpms or more. I reserve single plane intakes for nitrous use, forced induction use or more radical n/a set ups. What made you go with the single plane?
As far as the cam is concerned, single planes need more overlap to help scavenge the intake runner to build torque and have a strong mid range. They also need an earlier intake valve closing event to ensure power peaks where it needs to.
As far as the cam is concerned, single planes need more overlap to help scavenge the intake runner to build torque and have a strong mid range. They also need an earlier intake valve closing event to ensure power peaks where it needs to.
#18
Hi Martin. Thanks for taking the time to write to me!
I went with the Vic Jr. intake for a more "old school look" as I am doing a LS conversion in my 1970 trans am & want the shaker to work
As for cams the F13 is NIB so it will be posted for sale & I will get something else. I can get this cam:
232/ 238 - .599" / .601" @ 113*/109 (LSA/ICL)
super cheap as it was a wrong order & I think it will work a little better for now. When I have the $$$ for a custom grind i will probably go for something such as:
228 / 236 - .612" / .600" @ 111* + 4. How does this one look?
I don't think i'll have any PTV issues with stock gaskets & pistons using milled 5.3 heads (59cc) with 2.02" / 1.57" valves should I?
I went with the Vic Jr. intake for a more "old school look" as I am doing a LS conversion in my 1970 trans am & want the shaker to work
As for cams the F13 is NIB so it will be posted for sale & I will get something else. I can get this cam:
232/ 238 - .599" / .601" @ 113*/109 (LSA/ICL)
super cheap as it was a wrong order & I think it will work a little better for now. When I have the $$$ for a custom grind i will probably go for something such as:
228 / 236 - .612" / .600" @ 111* + 4. How does this one look?
I don't think i'll have any PTV issues with stock gaskets & pistons using milled 5.3 heads (59cc) with 2.02" / 1.57" valves should I?
#19
Any thoughts on this cam working ok for my application?
232/ 238 - .599" / .601" @ 113*/109 (LSA/ICL)
I may advance it just a bit more to move the power a little lower in the RPM curve. Either way I think it should be better than what I had picked out to run with my old intake
232/ 238 - .599" / .601" @ 113*/109 (LSA/ICL)
I may advance it just a bit more to move the power a little lower in the RPM curve. Either way I think it should be better than what I had picked out to run with my old intake
#20
Staging Lane
Join Date: Jan 2009
Location: Adelaide, South Australia
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Go with a 235/240 .648 .609 @111 from speedinc or Texas speed. Did a cam only set up with victor jnr and made 400rwhp with an unlocked 4500 converter. Drives mint. Nice lope.