LS3 top end swap
Discussion
That's a great project! Would have liked to see it topped off with a nice cam and a set of caddy lifters. For that set up a 224-232 114 with 4 deg +ve ground in would be perfect. I do know where there is one. I'd stick a Katech C5R chain in too, single roller, not to pricey. Your stock injectors would have been fine though, and I would have kept the L92 valves too. All IMHO of course.
Monaro5.7 said:
Ahhh some one following my lead
As i said at the meet mate look forward to ur result. Your real tatget is 420rwhp as i have 419rwhp but iam sure you will beat that with the better heads and head internals
Have you got LS3 heads too?? As i said at the meet mate look forward to ur result. Your real tatget is 420rwhp as i have 419rwhp but iam sure you will beat that with the better heads and head internals
As it's an unknown (due to Gelf being the only one previous to me who has this setup), I'm trying not to get my hopes up. 420+ rwhp would be magic
mikeyb1987 said:
Monaro5.7 said:
Ahhh some one following my lead
As i said at the meet mate look forward to ur result. Your real tatget is 420rwhp as i have 419rwhp but iam sure you will beat that with the better heads and head internals
Have you got LS3 heads too?? As i said at the meet mate look forward to ur result. Your real tatget is 420rwhp as i have 419rwhp but iam sure you will beat that with the better heads and head internals
As it's an unknown (due to Gelf being the only one previous to me who has this setup), I'm trying not to get my hopes up. 420+ rwhp would be magic
LS3 top end should do much more as its got 40 odd extra cubes in the LS2 and better heads.
Simon your rwhp numbers are not SRR numbers though so its hard (impossible) to compare unless you both go to the same dyno.
Gelf didnt get huge numbers from his at SRR. Maybe 370rwhp from memory, but he can correct me if Im wrong.
His cam wasnt too large though.
This should do an honest 400rwhp maybe 420 even. (All based on SRR numbers)
That would be only 5 shy of the new GTS LSA
Simon your rwhp numbers are not SRR numbers though so its hard (impossible) to compare unless you both go to the same dyno.
Gelf didnt get huge numbers from his at SRR. Maybe 370rwhp from memory, but he can correct me if Im wrong.
His cam wasnt too large though.
This should do an honest 400rwhp maybe 420 even. (All based on SRR numbers)
That would be only 5 shy of the new GTS LSA
ringram said:
LS3 top end should do much more as its got 40 odd extra cubes in the LS2 and better heads.
Simon your rwhp numbers are not SRR numbers though so its hard (impossible) to compare unless you both go to the same dyno.
Gelf didnt get huge numbers from his at SRR. Maybe 370rwhp from memory, but he can correct me if Im wrong.
His cam wasnt too large though.
This should do an honest 400rwhp maybe 420 even. (All based on SRR numbers)
That would be only 5 shy of the new GTS LSA
365 in fact. Long way from 420..............Simon your rwhp numbers are not SRR numbers though so its hard (impossible) to compare unless you both go to the same dyno.
Gelf didnt get huge numbers from his at SRR. Maybe 370rwhp from memory, but he can correct me if Im wrong.
His cam wasnt too large though.
This should do an honest 400rwhp maybe 420 even. (All based on SRR numbers)
That would be only 5 shy of the new GTS LSA
ringram said:
True, but bigger cam and more cubes.
20 cubes is worth around 30bhp...
420 might be a stretch, but I'd be game.
Derr! Don't understand the extra cubes bit as swept volume has not changed, larger combustion chamber will give it a lower compression ratio. so this will loose power unless skimmed to reduce20 cubes is worth around 30bhp...
420 might be a stretch, but I'd be game.
EssexVXR8 said:
Derr! Don't understand the extra cubes bit as swept volume has not changed, larger combustion chamber will give it a lower compression ratio. so this will loose power unless skimmed to reduce
The heads have been skinned by (I think) 0.030" to maintain standard compression.monkfish1 said:
365 in fact. Long way from 420..............
Correct, with 216/229, 1.85 rockers, around .61 lift, wortec headers and cat back, stock intake. It made 303 in stock form, same dyno SRR.Interestingly, g/cyl increased from .76 to .88 when I tried a custom 5" intake, the stock intake, MAF and filter represent at least 5kPa drop in MAP.
Edited by Gelf VXR on Friday 14th March 00:28
Edited by Gelf VXR on Friday 14th March 07:39
Gelf VXR said:
Correct, with 216/229, 1.85 rockers, around .61 lift, wortec headers and cat back, stock intake. It made 303 in stock form, same dyno SRR.
Interestingly, g/cyl increased from .76 to .88 when I tried a custom 5" intake, the stock intake, MAF and filter represent at least 5kPa drop in MAP.
Makes sense. Stock intake was never that great. Are you planning on changing it? Interestingly, g/cyl increased from .76 to .88 when I tried a custom 5" intake, the stock intake, MAF and filter represent at least 5kPa drop in MAP.
Edited by Gelf VXR on Friday 14th March 00:28
Edited by Gelf VXR on Friday 14th March 07:39
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