View Poll Results: Which top end for my 450 stroker?
Multiple Choice Poll. Voters: 22. You may not vote on this poll
Which top end setup 450CID: LSXRT & LS3 heads OR GMPP & LS7 heads?
10-03-2011, 06:29 AM
#1
Which top end setup 450CID: LSXRT & LS3 heads OR GMPP & LS7 heads? Out of everything, the biggest issues that has been burning my brain is what to do about the top end.
First option:
102 LSXRT intake and WCCHStage 3 LS3 heads?
Yeah I know I will have to cut the cowl and and as for the hood, I have a VFN 4" cowl Ram Air hood.
Second option:
GMPP intake and WCCH Stage 3 Brodix BR7 or PRC LS7 285cc heads?
Head vs head, I know the LS7 is the winner, but the GMPP and LSX intake is crap! I was wondering if the use of the LSXRT would make up for the lost performance of the LS7 setup.
Or if you have other options that can be considered, like AFR 245s or TF, please explain.
** If you have a Muilt-Vote or if you vote for OTHER, please explain your reason.
.
First option:
102 LSXRT intake and WCCHStage 3 LS3 heads?
Yeah I know I will have to cut the cowl and and as for the hood, I have a VFN 4" cowl Ram Air hood.
Second option:
GMPP intake and WCCH Stage 3 Brodix BR7 or PRC LS7 285cc heads?
Head vs head, I know the LS7 is the winner, but the GMPP and LSX intake is crap! I was wondering if the use of the LSXRT would make up for the lost performance of the LS7 setup.
Or if you have other options that can be considered, like AFR 245s or TF, please explain.
** If you have a Muilt-Vote or if you vote for OTHER, please explain your reason.
.
Last edited by RONIN LSX; 10-03-2011 at 06:47 AM.
10-03-2011, 06:53 PM
#5
It never ends Bro! Now that I've decided to go the LS7 route, I then get into a conversation that all the intakes SUCK and can't keep up with the heads, that is of course, unless it's a $3000 fabbed intake. So now I need to take into account the intake and if I'm just throwing away money on a set of LS7 heads or if I'm better off with the LS3 because of better intake options.
Sure I could get the LS7 heads that WOULD out preform the LS3 heads (head to head), but since it's the intake that kills any real potential of the LS7s, does that mean the LS3, with a 102 LSXRT intake, will preform just as good, if not better, than the LS7 with a crap intake... and on the cheap(er).
I don't care what the LSXRT looks like or if I need to cut the cowl... If it performs better with the LS3 (or just as good) vs the LS7 then it's a WIN in my book! Now if they made a LSXRT for the LS7s then I think this would be a moot point since the RT out preforms the R hands down. Would it allow the LS7 to reach their full potential, I doubt it, but I sure it will open that gap between the LS3 and LS7 vs cost/HP that much more to make a definitive decision.
Trending Topics
10-03-2011, 07:25 PM
#9
That's the problem... With my stroke being 4.125 and rods at 6.125 it pushes the crown too far up into the head of the piston and leaves VERY little meat for dishing.
With the Stage 2 LS3 heads I had from Rich, they were 67cc and I would have needed a -17 dish for the CC I wanted (10.5:1). That coupled with the thin land ring made for a very worrisome piston. Vic at Wiseco suggested a head with a larger cc chamber as did Mike from CP.
10-03-2011, 08:25 PM
#11
TECH Fanatic
iTrader: (10)
Join Date: Mar 2011
Location: Miami gardens FL 33055
Posts: 1,023
Likes: 0
Received 0 Likes
on
0 Posts
mast performance LS7 4500 EFI
• CAD designed and Super Flow flow bench tested
• Fully CNC machined, fully ported and hand finished
• Purpose built racing intakes maximize intake port velocity and airflow
P/N 501-008
Retail $ 1,749.99
• CAD designed and Super Flow flow bench tested
• Fully CNC machined, fully ported and hand finished
• Purpose built racing intakes maximize intake port velocity and airflow
P/N 501-008
Retail $ 1,749.99
10-04-2011, 12:36 AM
#13
Is that a Cary intake? I would love to have it, but it's so dame $$$! By the time you get the intake, TB and Rails, you deep into the $2k range. I know you got to pay to play, but it still hurt to shell out that kind of cheese for an intake setup.
10-04-2011, 05:16 PM
#17
Damn it! This whole time I thought the RT was made for the LS3/L92 since it was a truck intake and I JUST NOW realize it for the blow *** Cathedral heads.... WHATS THE POINT!!? Talk about reading comprehension for the loss on my ***!!!
If FAST is going to make a TRUCK intake that suppose to be for PERFORMANCE then why the hell not make it for the L92... There are 4 billion types of intakes for the 317s and little for the L92, which it the REAL performer out of the 2 TRUCK heads... ehhh... some companies
This won't do me ANY good on my 450 stroker... damn I'm pissed
If FAST is going to make a TRUCK intake that suppose to be for PERFORMANCE then why the hell not make it for the L92... There are 4 billion types of intakes for the 317s and little for the L92, which it the REAL performer out of the 2 TRUCK heads... ehhh... some companies
This won't do me ANY good on my 450 stroker... damn I'm pissed
10-04-2011, 05:23 PM
#18
And IIRC, TSP talked me out of going with the AFR 245 for the PRC LS7 285cc heads when I asked so there has to be a reason. Then again... the AFR is a 245 and the PRC is a 285
10-04-2011, 05:49 PM
#20
TECH Regular
Join Date: May 2010
Location: Birmingham
Posts: 430
Likes: 0
Received 0 Likes
on
0 Posts
Lots of differences between the two, which one is better all depends on your goals. Is this for a DD or track queen? Will it be FI or large NOS shot? What is your budget?