ok this is my situation. I am pretty sure that i have a blown head
gasket. so after i do a leak down test on my car to confirm that it is the case i will be pulling my motor out. I figure that if my motor is already out i might as well put a new cam in it. i want a cam that makes good power but not lopey, but im not really big on the hot cam. what are some good cams that make good power without the lope. also this is off subject but i want the impala head gaskets to raise my compresion, where do i get these and what is the part number.

thanks in advance
dustin

 

ttt

 

ALL CAMS SUGGESTED ARE TO BE GROUND ON A 111 OR 112 ICL AKA "STRAIGH UP" OR 2* ADVANCED

xe intake lobe #3190
@ .050" duration 214*
@ .200" duration 141
total duration 266
lift with 1.6 rockers .565"

high lift magnum exhaust lobe #3119
@ .050" duration 224*
@ .200" duration 144*
total duration 280
lift with 1.6 rockers .560"

Overlap = ((Advertised Intake Duration + Advertised Exhaust Duration)/2) - (LSA * 2)

49=((266 + 280)/2-(112*2)) on a 112 lsa
this is overlap with a 112 lsa it will idle like a 224/230xe on a 114 lsa

45=((266 + 280)/2-(114*2)) on a 114 lsa
this will be a bit milder than the above cam but i feel the first cam will make more tq and be stronger in the midrange

the next two cams use the same intake lobe as above. I REALLY LIKE THIS LOBE. the exhaust however is an xe as opposed to a magnum.

here is the other exhaust lobe specs

xe exhuast lobe #3314
@ .050" duration 224*
@ .200" duration 145*
total duration 276
lift with 1.6 rockers .536"

47=((266 + 276)/2-(112*2)) on a 112 lsa
this comes out in between the other two in regaurds to overlap but i'm afraid the exhuast flow area suffers quite a bit from the lost lift.

43=((266 + 276)/2-(114*2)) on a 114 lsa
this is clearly the tamest of the bunch while still giving you most of the power of the most aggressive one
all losses from these tamer cams will be on the top end.in any case the difference in power will be almost negligable
i assume within 10 ft bls and 10hp this is just a guess theres really too many things that can alter it *shrug

all will idle smoother than the xe218/224 112lsa cam. which has
49=((270 + 276)/2-(112*2))
they all should also make more power than it does because of the @ .200 lift duration numbers the 214* intake lobe is actually larger than the 218

these things will absolutely love nitrous IMHO just in case you get the itch.

everyone else feel free to tear these cams apart. i tried to give a pretty good range as far as overlap is concerned.
you asked for tame and i gave you tame. if you have anymore questions feel free to ask.

_____
jdavis

 

come on surely somebody has something to say about the custom grinds i layed out.

 

WS6T3RROR

I think those are some good lobes. Nice mild durations with good lift should give decent power without the headache of bad idle, cam surge, etc.

I wonder if even more lsa would do much to these profiles. Something like going to the stock lsa's, what do you think?

 

WS6T3RROR

just a little fyi. most LT1 cams are ground with a 4 degree advance so a 112 LSA will give you a 108 ICL. also the 3314/3315 xe lobes is also known as CC503 or XE224/230 that is so popular.

DeezT/A

you can get impala head gaskets from Jason Cromer... do a search for his phone number. they will be the cheapest set you can find.

 

yeah turbo_z i know that, but after talking to the comp guys its just something they do to crutch all the big *** cams people pick. IMHO the "RIGHT" cam will make best power installed straight up or 2 degrees advanced which is why i said to have it ground on a 112 ICL. that 214* lobe is right up there with the 224*. in the @ .200 lift range the 224 is only 4* bigger and with .200" being the what i consider the first significant flow number the 224 lobe is not worth it in this application. yes theres a higher lift variant but 605 lift is past where stock heads peak and on top of that it won't be as big of a pita for him to do the 214* with .565" lift.
if he didnt mind the lope and the expense of the springs and more than likely comp r lifters then it would be well worth it to go with the 224* .605" lobe. and if that was the case i wouldnt use a 230 lobe on stock heads for the exhaust i'd use the 236 but i'd go with the 555 lift one to help balance out the flow of the stock heads. and in that case i would have it ground on a 108 ICL and have it cut on a 112 lsa. but then again thats a much bigger cam advertised duration wise. and with the stock CR it doesnt make sense to me to go that big. i just tried to lay out something that would be as potent as possible for a smallish cam (it really isnt that small in regaurds to its flow area) that will more than likely not lope much if any.

also since he's bumping compression with the impy gaskets i really think this thing will perform very well with this cam. if somebody would try these different cams vs dcr and see what they come up with using stock specs with impy gaskets i'd be interested to know (yeah i'm lazy) i just did these cams in class while i was writing a program so they may act better with 4 degrees advance but i somehow doubt it. the dcr comparo will probably tell which one will be the strongest.

 

Tim, i dunno i dont think theres anything but loss going back to the 116 or 117 lsa. it would idle like a stocker i guess. i mean i think you would lose enough of the peak for it to be not worth it. to me that would make a badass 4x4 cam the tq curve wouldnt be a curve anymore it would just be a line. but a little overlap is a good thing. if you did it the bottom cam on a 116 lsa it would be 41* of overlap which is almost identical to the cam i put in my truck . i dont think you would lose anything over stock by going on a 116 it wouldnt pull as good hp wise as it would on a 112 lsa which is what i'd really like to see him go with. on a 116 you'd gain top end power midrangq tq but i'm going to guess that you wouldnt have as much avg hp. comp grinds their cams tighter than stock its for a reason

 

the lower your ICL... the higher your DCR will be so a 108 ICL should give you more torque than a 110 ICL.

 

yeah but if i had told him on a 110 ICL and a 114 lsa it would have the same amount of advance and a later icl which would i think do nothing but give you more hp and the same tq. i realize the dcr will be lower with a later closing point but its only 2 degrees i mean sheesh. can you post me the numbers you got if you did the conversion or did you just spit out the golden rule of DCR

 

you want the DCR? which cam exactly is it and i can get the numbers.

 

the ones i laid out in my first post would be nice if its not too much of a pita. should be everything there you need to do it with provided you have stock specs only with impy gaskets. i know they arent the best DCR with stock head gaskets. that honor goes to the zz4 cam if i remember right and its cheap. i wonder if maybe we could play with the compression if the guy is willing to mill the heads a little after all he did have a blown gasket. and since they'll be of hell why not right? if you'd be nice enough to do this run the first cam and the 3rd cam through the dcr calc and play with the compression until you come up to about 9.3 for a dcr that should be right on the edge of whats safe on pump gas and it will be the most potent. man i need some sleep i'm having trouble thinking.

 

alright..

the 3190/3119 on a 112 LSA(108 ICL) is 9.06 DCR

" " 114 LSA(110 ICL) is 8.92 DCR


because the intake lobe is the same for the other cam.. the #s dont change any. hed need a 3312 lobe to get near 9.25 DCR but that lobe is really small and likely wouldnt produce near as much power as the 3314.

 

well try this, run the first cam installed straight up 112ICL 112 lsa and bump his compression to 11.3:1 (yes thats some head milling). then try it on a 108 ICL and a 112 lsa just for giggles.

 

thanks you guys for the input. although i don't know much about cam specs and stuff like. i will run it by my brother (JD95bird) and see wut he can tell me about wut you guys were talking about. and agin thanks for the input.