418c.i. and ETP 225's - what cam?
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418c.i. and ETP 225's - what cam?
well guys i used to have a 383c.i. motor till a valve spring problem got into my oil pump. my cam specs on this motor were 248/254 647/647 on a 113. and the heads were LS6's with bigger valves. the car run great with this combo. i was pleased. just curious as to what yaw would recommend for this next set-up? it is gonna have a vic jr. ETp225's, and 418 c.i. the compression is 11.9 and all this is going through a 3050lb camaro with a TH350 w/transbrake, moser 9" that is lightened everywhere possible. the converter is a vig 4400. any help would be appreciated. it is just that i have made a few calls and people are telling me cams that i used to run in my old heavyweight 6speeded 346.
#4
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talk to someone like predatorz or patrick g, or maybe comp etc. you say you want radical and alot of people think they do till see what that is really like. be ready for a harsh car.
#7
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Originally Posted by N2DP2QT
thank you sir. i haven't ported the intake any. and the heads flowed 338 intake 240 exhaust is what texas speed said.
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oh i gotcha, i have the flow sheet. and thwy are above 309cfm intake @ .500 lift and make there peak between .650 and .700lift. the exhaust is 226 @ 500 and doesn't quit gaining cfm all the way through
#9
Originally Posted by N2DP2QT
that is the thing, i don't want an ok / fair one. i want a radical setup
okay-but my understanding is that the bigger stick u go-the harder it gets to find tune-
how was the old cam in driving and idling wise?
if it was harsh u would think the next one u want to put in would be even worse-
looking by what u got in head wise and comp ratio-u are doing better then most-
also what u chasing in hp and torq? daily driver-weekend car-
i reckon the above? is a key to a good camshaft selection process-imo
#10
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the cam that was in it gave me no problems at all. I tuned it myself with HPtuners. I had a tune at one time by a speedshop in LA that i ended up junking and going back with my tune. and i drive the car a descent bit. i put 7k on my last setup before i got a valvespring. and that 7k was within 4 months. streetability is what you can deal with. my car has a hard *** aluminum kirky, and no power steering or a/c. i can deal with alot. and i am not shooting for any certain hp/tq numbers. i just want 9's on motor and 8's on the kit.
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that cam should do really well in that many cubes... er... at least what you want it for... be ready to spin that stroker to the moon to get the power out of it though. the LSA of that cam should like the bottle a little better as well...
#13
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You cannot use the same valve events for a bigger motor with a single plane than you did with your old motor. Single plane intakes as a general rule respond with an earlier intake valve opening and an earlier close than what a FAST or LS6 intake would want. The exhaust valve close will need to be later to properly feed the intake during the overlap cycle. Generally, the net result of this is a much narrower LSA than what you're running now.
Try 247/251 .656/.660 109LSA +4.
Try 247/251 .656/.660 109LSA +4.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
#15
Originally Posted by N2DP2QT
that is the thing, i don't want an ok / fair one. i want a radical setup
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awesome guys. the pistons should be here soon, and i will let ya know what cam and the power numbers it puts down within a month and a half i hope. yaw have all been real helpful.
#17
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Originally Posted by Patrick G
You cannot use the same valve events for a bigger motor with a single plane than you did with your old motor. Single plane intakes as a general rule respond with an earlier intake valve opening and an earlier close than what a FAST or LS6 intake would want. The exhaust valve close will need to be later to properly feed the intake during the overlap cycle. Generally, the net result of this is a much narrower LSA than what you're running now.
Try 247/251 .656/.660 109LSA +4.
Try 247/251 .656/.660 109LSA +4.
also will this cam still be a descent nitrous cam?
#18
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Originally Posted by N2DP2QT
also will this cam still be a descent nitrous cam?
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.