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Gt mods?

ok so pretty much get a downpipe and pem and rockers? now i believe i have seen a gt with a gt cam upgrade and with rockers? why cant i put a gt cam and rockers? i would think that a GT1 cam with Aluminum roller rocker package would work? oh and by the way would it just be better to put slp headers instead of ported stuff?
so the list would be
1downpipe
2pem
3rockers/cam
 


Grandprixboy1224 said:
ok so pretty much get a downpipe and pem and rockers? now i believe i have seen a gt with a gt cam upgrade and with rockers? why cant i put a gt cam and rockers? i would think that a GT1 cam with Aluminum roller rocker package would work? oh and by the way would it just be better to put slp headers instead of ported stuff?
so the list would be
1downpipe
2pem
3rockers/cam
Click to expand...

I would make the list look like this:
1) Downpipe
2) Power log
3) Rockers OR cam

Before the Power Log came out people had to port the front exhaust manifold and it helped but the Power Log is much better so do that for the front exhaust manifold and like I said before, skip the rear PEM. I think for a NA engine you are better off with a downpipe and power log. If you had a balls out GT3 cammed engine with ported heads, etc. then I'd go with SLP or s&s headers, but short of that, put that extra money towards the cam or rockers.

You can use roller rockers with a cam but it is a waste of money really. Rockers are $300+. All rockers do is increase valve lift. A cam will increase the valve lift already so adding rockers on top of that will cause problems. Most cams are designed with stock rocker ratios in mind anyway. Stock rockers are 1.6 ratio (I think later years got 1.66 ratio) and usually with cams the most you can run is a 1.7 ratio rocker if that. $300 or more for a .1 ratio increase is not a wise use of money IMO as the power difference will not be noticeable and probably barely even measurable on a dyno. To effectively run rockers with a cam you'd probably need to invest a lot in head modifications.

Here is a helpful basic article on rockers and cams: W Body Store
 
I have a question. Everyone says that the cam or rockers should be done as a mod. I use my GP as a daily driver. Right now I've got a CAI. I'm only interested in MPG increases, not HP increases. I intend to do the Powerlog and DP, because they are fairly simple bolt on mods, compared to cam and rockers. Outside of a HP gain and quicker throttle response, is there any gas savings from doing rockers or camshaft? If I want performance, I'll drive my SS.
 
if the cam is ground for it you can get a fuel mileage increase (the angle of the lobe, and separation between intake and exhaust all make a difference)
 
i dont know hard choices. i really want to beef up my engine but i just dont have the money. so i figure i would add just some things now and then i would demod my car when i get the money to do a top swap and mods for the s/c. I just wanna put some mods on the n/a so it doesnt look all plain. but thanks guys.
 


dont get a cam unless youre wanting to make it fast. and if youre wanting to make it fast youre doing it on the wrong base with the l36. the rockers would be a nice touch for your top end though. i think a gt with a powerlog, 3" downpipe with high flow cat, modded 1.9 rockers, and an hv3 could be fairly quick.

as far as the top swap, i would suggest just getting a whole l67 setup and swapping the motors, easier and safer when modding from the lower compression. going down to the block with the engine in the car is a lot harder than just pulling the engine and working on it outside the car, so id suggest pulling it either way.
 
Deezul_AwT said:
Outside of a HP gain and quicker throttle response, is there any gas savings from doing rockers or camshaft?
Click to expand...

Rockers improve mileage. I just put in my 1.9s and I haven't taken notes, but there was some improvement. I think most of the mods that happen to also benefit mileage tend to only help highway mileage. Since I don't do a whole lot of highway driving I don't get to really reap the benefits.

Anyway, rockers are a great upgrade and I highly recommend them. You can install them very easily if you take your time and it really helps these motors in higher RPM ranges where the stock 3800s fall on their face. So you get more power, better mileage, easy installation, and at a pretty reasonable price (especially if you can find them used). IMO people with mild bolt on cars need to stop blowing extra money on headers and get rockers instead. If you are really planning on a top swap the rockers would be a good investment since they will be beneficial after the top swap too. I agree with Bio248 to go with 1.9s. I like their torque increases better than ERs actually on a NA 3800, and again, they will work well with a top swap later.

A mild cam could help increase your mileage too depending on how you drive. These cars are relatively heavy and the 3.8 can be a bit burdened in factory form. A little power kick can make it easier to get moving and can improve mileage. A lot will also depend on the tune.
 
no im not doin a top swap for my n/a. i just plan to leave my n/a a n/a with many and all upgrades possiable for it. Later on i will get a gtp and upgrade that. Im waiting for my gf to get a new car and she wants a gtp so me and her will both have a gp. But i dont want to be a gtp i want to be a gt with power and scared by other gt,mustangs,and freinds. so get a powerlog, 3'' dp? 2.5 dp with high flow car and 1.9 rockers and a hv3 and what about a high velocity throttle body Stage2?

p.s this might be a dumb ? but whats the L36 and L26?
L36 the series 3 and the L26 is the series 2?
 
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i thought about swapping engine to engine with my freind car. zzp said it would be 1500 dollars to do. top swap with warranty and all the bs was 2000. but no matter i would want a rebuild engine and the guy never answered my question if they going to rebuild the engine before doin the top swap. im just glad im not doin it. rather save my money after my gt is done and get a gtp and have it rebuild't then mod that b*t*h
 
Bio248 said:
dont get a cam unless youre wanting to make it fast. and if youre wanting to make it fast youre doing it on the wrong base with the l36. the rockers would be a nice touch for your top end though. i think a gt with a powerlog, 3" downpipe with high flow cat, modded 1.9 rockers, and an hv3 could be fairly quick.

as far as the top swap, i would suggest just getting a whole l67 setup and swapping the motors, easier and safer when modding from the lower compression. going down to the block with the engine in the car is a lot harder than just pulling the engine and working on it outside the car, so id suggest pulling it either way.
Click to expand...
a proper cam can actually make better mileage, all the rockers do is increase the lift they don't effect duration (time valves are open) or overlap which are major contributors to mileage, and power. I have always felt rockers were a stop gap and the proper method is change the cam (I am also a bit more old school though)
 


i agree with everything youve just said, but to put a cam in an l36 platform is a serious waste of time and money.
 
Bio248 said:
i agree with everything youve just said, but to put a cam in an l36 platform is a serious waste of time and money.
Click to expand...

That's kind of what I was hoping to hear - that's it not really worth it for a DD. My Impala, I might consider it. But I'd just assume do rockers on it as well as it's a bit easier for a driveway mod.
 
im confused a cam will work with rockers? I mean a cam gives more hp than rockers. But i think im going to do Dp,Front Power Log,Rockers,Hv3,HVTB. i should see a difference with all that shouldnt i? with all that im sure i can beat a mustang and a gp gt right? i know gp can beat a mustang but not if it has mods. Im hoping to at least get somewhere near to beat a stock gtp and maybe later down the road a stock with a little mods im hoping to keep up with. but overall how does that sound?
 


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