02bluess

iTrader: (18)

Do these numbers seem right? Again, this is through a 6-spd, and I am running a 12-bolt/4.10's/chromemoly driveshaft/27.5" tires, as well as the mods in my sig below. I'll post the graph as soon as I get it from Speed...

To put it in comparison, I'd made 410rwhp/389rwtq with my TR230/TEA Stg 1.5's, so I picked up 4 rwhp and lost 6 rwtq??? I'd realized going from the TEA's to the Absolute's might be a wash, but I guess I'd expected more going from the TR230 to the G5x3 (112 LSA).

BTW, both sets of numbers above are with my cutout closed. When Speed opened up the cutout, it put down 417rwhp/386rwtq. I'd originally brought it up to Speed to have them install their true dual setup on it, but Larry seemed to think my gain would be minimal over the 2OTL.

So since I probably won't be doing the true dual setup, any other ideas to pick up some power (short of nitrous... that'll be next year) and get me in the 440rwhp/400rwtq range??

As always, your help is appreciated

maddboost

iTrader: (11)

You may want to consider swapping your SLP MAF for a stock one. I dont know if that would rob you of power but it seems alot of people have trouble with them. My car ran slower with it over my stock one.

gomer

iTrader: (13)

Man, you've got all the bolt on's too. How was the A/F ratio during the pull? I've had some bad luck using the SLP MAF's, so that might be something to look at. Also, were your new heads milled any, and if so.. what length pushrods are you using. Something is definately off somewhere. Do you have a graph we can look at?

02bluess

iTrader: (18)

Thanks, I'd thought of that, too. Anyone else?? Am I missing something obvious????

BTW, here's my dyno graph from my old setup (TR230/TEA 1.5's)...

gomer

iTrader: (13)

Your old setup seemed to peak pretty early. I just tried a 232/230 110lsa 106icl cam in my car and it didn't peak until about 6250 or so. What springs were on your old heads and what springs are on your new heads?

02bluess

iTrader: (18)

Old heads - Comp 987's... I suspected I may have been getting some valve float with that setup.

New head - Comp 977's/Comp R lifters... I worked with Jay, and had him set up my heads on his shop engine with a similar cam to determine shim height, etc. Don't see how I'd get valve float with the 977's, and the shims should take care of the preload??

LS1 Power Plant

iTrader: (7)

Just a shot in the dark, I would double check the preload. What size shim did you use? I need a .040 - .045. Right now I have .030 on mine, and I think TATOY just found some .040 washers down at Lowe's. With the .030 I have on now it's okay (put down 460 RWHP NA), but it's not dead on.

02bluess

iTrader: (18)

I'd wondered about that as well... I'm thinking I may have Speed check the preload out while it's up there.

gomer

iTrader: (13)

That would be a good idea. Do you know how much the heads were milled and what lenght pushrods were used in the car? That would be some good info to pass along to speed inc.

02bluess

iTrader: (18)

Heads were milled for 11.0:1 compression, and the car is running stock length pushrods (7.40)... I'll pass the info along to Larry.

LS1 Power Plant

iTrader: (7)

This is basically my set up. I don't think your heads were milled any (prolly just cleaned up), but ask Jay if they were. That and finding out what size shims were used will quickly diagnose if it is a preload problem.

HOTROD98Z

iTrader: (1)

Those numbers do seem a little low, hope you can find out whats going on. I am also running AS 5.3 heads and the same cam and with my heads being surfaced milled as well, however i am running 7.35 pushrods and my preload was right at a hair under a quarter turn which i was told by jay is where you want it to be at.

offaxis

iTrader: (19)

Im not a fan of those comp R lifters. It seems a bunch of people runing them seem to be low on power which im sure is due to not having the correct geometry on valvetrain.

BTW those #`s seem very low for that combo.

Mike K.

valvetrain geometry can mean alot in a setup I have found. How does you new graph look? is the power dropping off early? Is it the vavletrain really noisy?

Jammer

iTrader: (1)

Heres one guys thats seen some luck with comp r's. Itsovr4u made 500+ natural on an APE 408 ..complete with comp r's and 7.350s. different level of engine than yours I know, just wanted to say some with the comp r's are making power... but maybe the assembly was spot on when it cam to proper adjustment as the top end was done by an experienced guy.

offaxis

iTrader: (19)

Jammer

I have some friends making great power with them but a few are having some big problems. One of my buddies had the roller part of one of these lifters snap off within 150 miles.

BADSS

iTrader: (7)

Isn't the Speed Inc. dyno notorious for low numbers? You might want to try dynoing somewhere else; just for comparison's sake.

99 Black Bird T/A

iTrader: (4)

What condition is the clutch in? If it's slipping any at high rpm that would really hurt your numbers with the TEA's or the Absolutes.

CHRISPY

Why did you swap heads and cam? Your old numbers were quite good compared to most of the heads/cam numbers I see up here on normal dynos.

02bluess

iTrader: (18)

Thanks for all the replies... I'll try to answer a few of the questions.

Clutch feels good; it's only got ~ 3000 miles on it with about 10-20 passes with around 4500rpm launches... nothing to drastic.

I haven't actually seen the dyno graph yet; I'm just going by the numbers Larry'd emailed me. I'm going to try to talk with him later today to discuss area under the curve, where the power fell off, comparable numbers for similar setups on their dyno, etc.

For right now, I'm thinking the first thing I'll have Speed do is verify the preload, then go from there. Since I'm not going with the true duals, I'm tempted to have Speed install a set of Comp adjustable rockers instead.

If anyone else can think of anything else to check, please post up!!