C6 LS3 Build - Trick Flow 255's, 11.5:! Compression and Mid sized cam - Advice Needed
06-04-2018, 06:09 PM
#61
thanks! I believe I’m going to either get the morels or the johnson ST2116.
Still considering saving all the money and leaving it stock with upgraded rocker arms, since that seems to be the key to success that none of the leading builders/tuners around the country have figured out yet.
Another mid 11s H/C LS3 on the way!
06-04-2018, 07:09 PM
#63
Edit: Those heads will be fine and the cam will drive great. Call some cam guys and head guys and ask them. 1 7/8 headers for sure.
That cam with well matched heads will idle well and run great on the streets. Get some double springs and steel retainers for street use. Titanium is light and hard yes, but it is brittle. Brittle means when it breaks, it shatters. Regular valves will do, no need for lightweight valves in a street car.
Don't believe me? Ask the pros that make the stuff.
That cam with well matched heads will idle well and run great on the streets. Get some double springs and steel retainers for street use. Titanium is light and hard yes, but it is brittle. Brittle means when it breaks, it shatters. Regular valves will do, no need for lightweight valves in a street car.
Don't believe me? Ask the pros that make the stuff.
Last edited by Bspeck82; 06-04-2018 at 07:49 PM.
06-04-2018, 08:23 PM
#64
Edit: Those heads will be fine and the cam will drive great. Call some cam guys and head guys and ask them. 1 7/8 headers for sure.
That cam with well matched heads will idle well and run great on the streets. Get some double springs and steel retainers for street use. Titanium is light and hard yes, but it is brittle. Brittle means when it breaks, it shatters. Regular valves will do, no need for lightweight valves in a street car.
Don't believe me? Ask the pros that make the stuff.
That cam with well matched heads will idle well and run great on the streets. Get some double springs and steel retainers for street use. Titanium is light and hard yes, but it is brittle. Brittle means when it breaks, it shatters. Regular valves will do, no need for lightweight valves in a street car.
Don't believe me? Ask the pros that make the stuff.
Thabks for the input.
06-04-2018, 08:56 PM
#65
Originally Posted by Bspeck82
Edit: Those heads will be fine and the cam will drive great. Call some cam guys and head guys and ask them. 1 7/8 headers for sure.
That cam with well matched heads will idle well and run great on the streets. Get some double springs and steel retainers for street use. Titanium is light and hard yes, but it is brittle. Brittle means when it breaks, it shatters. Regular valves will do, no need for lightweight valves in a street car.
Don't believe me? Ask the pros that make the stuff.
That cam with well matched heads will idle well and run great on the streets. Get some double springs and steel retainers for street use. Titanium is light and hard yes, but it is brittle. Brittle means when it breaks, it shatters. Regular valves will do, no need for lightweight valves in a street car.
Don't believe me? Ask the pros that make the stuff.
06-05-2018, 06:25 AM
#66
10 Second Club
thanks! I believe I’m going to either get the morels or the johnson ST2116.
Still considering saving all the money and leaving it stock with upgraded rocker arms, since that seems to be the key to success that none of the leading builders/tuners around the country have figured out yet.
06-08-2018, 12:29 AM
#67
06-10-2018, 12:46 AM
#68
I hate agreeing with hiocrew, lol. But get the bigger headers.
i had the same heads you got and milled them the same. Few other things different than you like cam. But on vengeance dyno i made 520/490. Car pulled other vettes, gt500, 5.0 that all made more power on different dynos than me.
i left a lot on table still for power because should have ported my fast, and i had nw 102tb. I still needed lighter clutch, and to up the rpms some. Not to mention ewp.
Main thing with hiocrew is they are going make sure they max the car out with bolt ons, and other little stuff like crank scrapers, rockers. Have 10k in bolt ons. Then compare how they run the same as a 6k h/c car that isnt even fbo. Ut they got the bolt ons and ins done.
i had the same heads you got and milled them the same. Few other things different than you like cam. But on vengeance dyno i made 520/490. Car pulled other vettes, gt500, 5.0 that all made more power on different dynos than me.
i left a lot on table still for power because should have ported my fast, and i had nw 102tb. I still needed lighter clutch, and to up the rpms some. Not to mention ewp.
Main thing with hiocrew is they are going make sure they max the car out with bolt ons, and other little stuff like crank scrapers, rockers. Have 10k in bolt ons. Then compare how they run the same as a 6k h/c car that isnt even fbo. Ut they got the bolt ons and ins done.
06-10-2018, 09:06 PM
#70
my understanding is that the fast itself is a bit of a waste of money from a $ per hp standpoint, if you’re not forcing air into the manifold. I understand it will make more power than a ported stock manifold, but the comparisons I’ve seen show it to be a very small difference.
Daniel
06-10-2018, 10:15 PM
#72
10 Second Club
iTrader: (8)
my understanding is that the fast itself is a bit of a waste of money from a $ per hp standpoint, if you’re not forcing air into the manifold. I understand it will make more power than a ported stock manifold, but the comparisons I’ve seen show it to be a very small difference.
Daniel
in the ls3 vs coyote shootout when they went from the stock ls3 intake to the holley high ram they picked up substantially. So yea the ls3 intake leaves alot to be desired in extended rpm set ups.
06-11-2018, 06:51 AM
#73
10 Second Club
I hate agreeing with hiocrew, lol. But get the bigger headers.
i had the same heads you got and milled them the same. Few other things different than you like cam. But on vengeance dyno i made 520/490. Car pulled other vettes, gt500, 5.0 that all made more power on different dynos than me.
i left a lot on table still for power because should have ported my fast, and i had nw 102tb. I still needed lighter clutch, and to up the rpms some. Not to mention ewp.
Main thing with hiocrew is they are going make sure they max the car out with bolt ons, and other little stuff like crank scrapers, rockers. Have 10k in bolt ons. Then compare how they run the same as a 6k h/c car that isnt even fbo. Ut they got the bolt ons and ins done.
i had the same heads you got and milled them the same. Few other things different than you like cam. But on vengeance dyno i made 520/490. Car pulled other vettes, gt500, 5.0 that all made more power on different dynos than me.
i left a lot on table still for power because should have ported my fast, and i had nw 102tb. I still needed lighter clutch, and to up the rpms some. Not to mention ewp.
Main thing with hiocrew is they are going make sure they max the car out with bolt ons, and other little stuff like crank scrapers, rockers. Have 10k in bolt ons. Then compare how they run the same as a 6k h/c car that isnt even fbo. Ut they got the bolt ons and ins done.
06-18-2018, 05:34 PM
#75
Why do a half as H/C car? I mean If you are looking for a great performer this is what it takes right? You want a half *** build then cram you a cam in there with just headers and watch how lazy it is. These cars lack gear from the factory and have a 58 pound clutch set up........ So first 2 mods to a vette should be gear and clutch. Let alone Ohio I had the majority of these parts left over from my 1LE so they were free.....
I will likely redo clutch and gears at some point, but I won’t be putting 4:10’s or a clutch that requires a push start to get going. Same reason I didn’t do a giant cam.
As of now, I am going with the 1.8 rockers, the Johnson lifters (still unsure of short travel vs limited travel), the ATI 10% underdrive pulley, lightened intake valves, and still looking for 11.5 CR between milling and thinner headgasket. I thought about doing gears right away, but I’m interested to see how the car Performs as is, especially given the slightly shorter z51 gear ratios.
Daniel
06-18-2018, 07:49 PM
#76
Why do a half as H/C car? I mean If you are looking for a great performer this is what it takes right? You want a half *** build then cram you a cam in there with just headers and watch how lazy it is. These cars lack gear from the factory and have a 58 pound clutch set up........ So first 2 mods to a vette should be gear and clutch. Let alone Ohio I had the majority of these parts left over from my 1LE so they were free.....
and gear isnt necessary if he not trying to set records at the track. Even if he is it isn't needed. Didnt we just see a bolt on c6 beat your time. And it didn't have rockers, crank scraper or rear gears. Hmmmm
06-18-2018, 07:56 PM
#77
i think some of this depends on how you intend to use the car. I can see that you guys are drag racers. Nothing wrong with that, but not everyone out there is. I’m certainly not. I will take it to the strip to benchmark it once each time I modify it, but that’s about it. Aside from that, I will hit a road course two or three times a year, but my primary use for the car is getting lost on mountain roads on the weekend, so I’m looking for a balance. For instance, while keeping 30mpg on the interstate isn’t critical for me, I take a lot of long trips in the car, and I’d love to retain as much of that as possible. I’d love a low 10 second car, but I’d rather keep some good low end punch and throttle response out of corners. I’d love to be able to destroy everything in Mexico, but I’d much rather retain decent driving manners.
I will likely redo clutch and gears at some point, but I won’t be putting 4:10’s or a clutch that requires a push start to get going. Same reason I didn’t do a giant cam.
As of now, I am going with the 1.8 rockers, the Johnson lifters (still unsure of short travel vs limited travel), the ATI 10% underdrive pulley, lightened intake valves, and still looking for 11.5 CR between milling and thinner headgasket. I thought about doing gears right away, but I’m interested to see how the car Performs as is, especially given the slightly shorter z51 gear ratios.
Daniel
i had 490whp with baby cam, exhaust, udp, exhaust, fast, tb. On stingy dyno.
06-18-2018, 07:58 PM
#78
Why do a half as H/C car? I mean If you are looking for a great performer this is what it takes right? You want a half *** build then cram you a cam in there with just headers and watch how lazy it is. These cars lack gear from the factory and have a 58 pound clutch set up........ So first 2 mods to a vette should be gear and clutch. Let alone Ohio I had the majority of these parts left over from my 1LE so they were free.....
06-18-2018, 08:37 PM
#79
10 Second Club
06-18-2018, 11:27 PM
#80
10 Second Club
my understanding is that the fast itself is a bit of a waste of money from a $ per hp standpoint, if you’re not forcing air into the manifold. I understand it will make more power than a ported stock manifold, but the comparisons I’ve seen show it to be a very small difference.
Daniel
its when you get into ported stock heads or really good flowing aftermarket is where the fast starts to help. And if you cam for 7500 and use the mid runners in the fast then it really starts to shine. The stock ls3 intake tends to take a giant steamy **** after peak.