Why no aftermarket 4.8L stock stroke crankshafts?
11-29-2013, 10:06 AM
#21
Displacement lets you use more head and cam(bigger/more duration).
The argument you are making suggests that we could take unported heads and a stock cam and just slap a 408 under it and make more power than a nice heads/cam setup on a stock shortblock.
Would you actually suggest that? are people stupid for doing heads and cam first then later addressing the shortblock and updating the cam as is so common?
The argument you are making suggests that we could take unported heads and a stock cam and just slap a 408 under it and make more power than a nice heads/cam setup on a stock shortblock.
Would you actually suggest that? are people stupid for doing heads and cam first then later addressing the shortblock and updating the cam as is so common?
11-29-2013, 11:16 AM
#22
Displacement lets you use more head and cam(bigger/more duration).
The argument you are making suggests that we could take unported heads and a stock cam and just slap a 408 under it and make more power than a nice heads/cam setup on a stock shortblock.
Would you actually suggest that? are people stupid for doing heads and cam first then later addressing the shortblock and updating the cam as is so common?
The argument you are making suggests that we could take unported heads and a stock cam and just slap a 408 under it and make more power than a nice heads/cam setup on a stock shortblock.
Would you actually suggest that? are people stupid for doing heads and cam first then later addressing the shortblock and updating the cam as is so common?
Even if you were to take a set of ported heads and an aftermarket cam that made 450whp on a 346ci LS1 and you swap the parts over to a 408ci or even a 500ci stroker, you will still make roughly the same peak of 450whp, maybe a little more due to less valve shrouding.
However, as you mentioned, the larger displacement will allow the use of a larger cam or better flowing induction package to be used within the usable RPM range that wouldn't be suitable for smaller displacements. I think it's wise to plan ahead and consider what displacement and induction package is needed to achieve your goals, but I wouldn't call anyone stupid for doing it any other way.
I call people stupid when they say stupid things.
11-29-2013, 12:02 PM
#23
My point is you take a stock engine with supporting boltons and spend $3500 on topend OR $3500 on a higher displacement shortblock which will be faster?
Displacement helps when the SYSTEM is there to support it. You aren't really disagreeing with what I am saying you just want to.
On a given engine platform the topend end is where you will see the biggest gains, then displacement is used to expand your topend options.
Displacement is GREAT so long as you can afford to do the whole package well and aren't halfassing the topend to accomplish displacement and a LOT of folks get too caught up in displacement first and halfass the rest. It all has to work together.
Displacement helps when the SYSTEM is there to support it. You aren't really disagreeing with what I am saying you just want to.
On a given engine platform the topend end is where you will see the biggest gains, then displacement is used to expand your topend options.
Displacement is GREAT so long as you can afford to do the whole package well and aren't halfassing the topend to accomplish displacement and a LOT of folks get too caught up in displacement first and halfass the rest. It all has to work together.
11-29-2013, 12:31 PM
#24
My point is you take a stock engine with supporting boltons and spend $3500 on topend OR $3500 on a higher displacement shortblock which will be faster?
Displacement helps when the SYSTEM is there to support it. You aren't really disagreeing with what I am saying you just want to.
On a given engine platform the topend end is where you will see the biggest gains, then displacement is used to expand your topend options.
Displacement is GREAT so long as you can afford to do the whole package well and aren't halfassing the topend to accomplish displacement and a LOT of folks get too caught up in displacement first and halfass the rest. It all has to work together.
Displacement helps when the SYSTEM is there to support it. You aren't really disagreeing with what I am saying you just want to.
On a given engine platform the topend end is where you will see the biggest gains, then displacement is used to expand your topend options.
Displacement is GREAT so long as you can afford to do the whole package well and aren't halfassing the topend to accomplish displacement and a LOT of folks get too caught up in displacement first and halfass the rest. It all has to work together.
Yeah, like that's not going to ruffle some feathers. The topic isn't what to do if you have $3500 to spend, it was the validity of the 4" stroke cranks. You said yourself that you had no comment as to the topic, you just wanted to tell everyone how their logic is deeply flawed. GTFO with that BS.
