blazeone

Assuming standard bolt-on's headers, intake. What were your cam specs and rwhp?

Billdog350

There are exactly 1,343,456 threads on this on the Corvette forum and LS1Tech. I've been scouring both of them recently for information about cams. Use the SEARCH feature, its great.

Basically expect ~35-50rwhp from a moderate cam that won't compromise much drivability and idle. Examples are 224/224, 228/228, 228/232 and so on. These have LSA's from 109-114 that idle decently.

Expect ~50-75rwhp from an aggressive cam that will hurt idle quality and be more complex to tune. These cams usually START pulling at 2300rpm or higher so expect to be revving all the time for max performance. Examples are the MS3, MS4, Trex, G5X4, G5X3, etc.

Any more power will usually require better flowing heads, intake, etc.

blazeone

Already done that, thanks.

Silver98

[QUOTE=Billdog350]There are exactly 1,343,456 threads on this on the Corvette forum and LS1Tech. I've been scouring both of them recently for information about cams. Use the SEARCH feature, its great.

Basically expect ~35-50rwhp from a moderate cam that won't compromise much drivability and idle. Examples are 224/224, 228/228, 228/232 and so on. These have LSA's from 109-114 that idle decently.

Expect ~50-75rwhp from an aggressive cam that will hurt idle quality and be more complex to tune. These cams usually START pulling at 2300rpm or higher so expect to be revving all the time for max performance. Examples are the MS3, MS4, Trex, G5X4, G5X3, etc.

Any more power will usually require better flowing heads, intake, etc.:QUOTE]

and to a well written, concise report on researcxh. Your results are totally in line with my research.

I'm going to do heads, but with a 98, I have head complications.

Great forum

blazeone

I've decided after talking to my tuner MTI here in Houston. I'm going with thier R1 cam. Specs are
232/236 .588/.575 - 114 LSA. They will do the install and tune late next week with the usual adders, UD pulley, Melling oil pump, Comp 921's, hardened push rods, etc.

MYCoupe

Make sure you post the results!

N0TDADYS_98

all the bolt on's 98 coupe... 228R cam = 382whp... *before underdrive pulley*

i also get 30mpg on the interstate and 15 in town..

SultansDiamond

I have a small cam (220/220) and stock heads (LS6) on an LS1. It dyno's 378 rwhp. Don't remember the torque, but pretty sure it was like 375, or so. So that makes it something like 440 hp at the crank? Can't tell it from stock and the smog tester commented "cleanest car I've seen in a long time". '02 Vert Mn6

Of course you'll need to upgrade springs and pushrods, but used LS6 heads won't cost you squat - maybe $700. Might as well give your new cam something to work with while your in the hood.

My objectives were to perform basically stock, but be faster than a Z06 should the conversation come up. Will make one, maybe two passes at the drags for the time slip. Other than that just put down the top and look for sunny days knowing I've got a bit more poop that the average smoe. Fits my needs & the wife don't know nuttin.




PS. I did upgrade timing chain & oil pump while there, but took a pass on the underdrive pully change as vette's like voltage - so I left a few hp on the table with that one.

vettenuts

With stock heads and a 216/224 0.551/0.551 115 LSA cam, 370 rwhp with headers and CAI, Ti exhaust. The lift was actually 0.583 because I was running Crane 1.8 rockers at the time.

Installed Dart heads, removed the 1.8 rockers, put in Crane 1.7 rockers. Bumped hp to 393, with a dirty air filter. I think it would hit 400 hp with the Honker I have now installed.

I also installed the Katech timing chain which is a very stout single chain and the GMPP timing chain damper. When I did the heads, I went to Morel lifters as well so if I return to the 1.8 rockers they will handle the open spring loads.

EdsC6Z06

2000 6sp.with 4:10's plus G5x3 cam with all the goodies= 399 RWHP, but tuning it has not been a walk in the park.

SteveDoten

224/228 cam through stock manifolds and cats=380rwhp

Billdog350

A friend recently did 413 rwhp (SAE corrected) with a MS3, LS6 intake, LG Street's, underdrive, offroad pipe, and stock heads on his 2000 M6 C5 (non-LS6 heads). His car has a nastly idle and its been a pain to tune with a local tuner.

Vette-Red

A friend with an 02 m6 with kooks lt's, x pipe, borla catback, pulley, cai, MTI X1 cam put down 412 rwhp. Doesn't idle great at startup and if he starts it with the ac on, it won't idle. There is a video of it on streetfire, will try to find it and post it here.

http://videos.streetfire.net/video/9...2c015a8552.htm

Billdog350

Specs for the MTI X1 cam (as a reference point), is 230/227 .591/.571 on 112lsa. This is similar but the opposite of the G5X1 that is 228/232. I've been told that the 230/227 inverse duration cams are better with stock manifolds. If you're doing LT's you're better with the opposite...feel free to comment.

MagikDraggin

I'm the one here with the "factory dud". '04 Coupe.

Comp cam 228/222 588/581 @ 114.5, stock LS6 heads, stainless LT's, Ti Catback/mini cats, underdrive pulley, Blackwing.

370rwhp 354 rwtq.....tuned and retuned, there just ain't no more there.

vettenuts

I would think higher duration on the exhaust side would be better suited to stock exhaust manifolds.

gonbad

Check my sig. I have the stock exhaust manifolds and cats. I gained 60 rwhp with the mods listed.

MagikDraggin

And why is that? It would seem to me that the engine would be attempting to force more exhaust out through a manifold than it was initially designed to handle.....if the duration of the exhaust lobe was more than the intake lobe.

An extended exhaust lobe setting would be more efficient in a long-tube header application, in my opinion.

SLPRC5

I hope to turn RWHP of 370 with my newest mods of long tube headers and Fast intake with the mods I already have. I'm about to also have a set of Crane 1.8 roller rockers and Comp 918 springs. Check my sig and you'll see I put down 349 RWHP before the LT headers and FAST intake. BTW this is on a '97 A4.