What are popular mods for GM Engines?

[DaTruth]

I am talking about everything from the basic GM 350 4 bolt main crate engine to the current LS7. I want to know what works for L98's, LT1's, LT4's, LT5's, LS1's, LS6's, LS2's, LS7's, etc.... If you can give common aftermarket heads, cams, lids, filters, throttlebodies, etc.. I get asked these questions all the time. I am sure we have a wealth of knowledge out there. We just need to share..

[gator]

just post your engine combo. you have them all.

[ZDriver96]

Turbonator????

[351coupe]

True duals.Oh wait,that's a mod for a GM ain't it:haha:

[corey r.]

how about new spring kit for the broken ashtray or a new weather strip kit for the side window?

oh... nm...... :fart:

[351coupe]

:lmao:

[DaTruth]

Well so far it seems AFR's work well with the LS1's. Depending on what power level you want you could pick from a variety of off the shelf cams. We can start a cam discussion later. Lid, ported TB, and aftermarket MAF seem to work well on LS1's. 4.10 gears rock on 6 speeds..

[351coupe]

AFR's work on anything....

[formula69]

since andy kenny and i seem to be the only resident ltslow people who post in here ill go first: (this is for the LT1 motor)

INTAKE:
Cold Air intake, some form of metal intake elbow
EXHAUST:
True duals!! mine work great, they just hit every bump :lol:
HEADS/CAM WORK:
Lt1s respond very well to even slight changes in the cylinder heads. anything from a freshen up (3-4 angle valve job, pocket port) to a full out port of the stock heads will net you great gains if matched correctly with a cam. up the lift with some 1.6 rockers and your set. i know people who have got these motors in the upward range of 7k rpms. as for aftermarket heads, afr makes some good deals ranging from like 185cfm to 225-230, also edelbrock, trickflow, and the all popular LT4 heads are available. As for cams, the most popular off the shelf cams are the lt4 hotcam and cc305 (pretty mild) to the cc306 and GM847 (heafty) a few guys like joe overton and lloyd elliot make customs that are pretty stout.

NITROUS:
the stock motor will handle a 150 shot very well. i know some guys who have up to 200 shot on a stock motor and havent broken anything yet. Depends on how well you set itup, but its probably the most popular power mod.

STROKER:
wanna go faster? this is the best way. bore and stroke for the lt1 is just like any SBC. its 350 stock, 355, 357, 377, 383, 396, and up.. forged 355 is a good route for high revving forced induction, or stroke the hell outta it for a torqu monster.

TURBO/S/C
Vortec, powerdine, and procharger are the best bets for superchargers.. there is a guy out there that made a roots setup for the lt1 which is what im going with , wouldnt go much higer than 6 lbs on the stock bottom end tho. As for turbos, STS has their rear mount and a few other companies have some turbo kits but not much due to limited engine bay space.

OTHER CRAP:
Once you start getting some decent power, the best way to get more is to increase air and fuel flow. these mods wont do much on a stock motor but will help a lot on a modded motor (heads/cam/forced induction stroker). Throttle bodys range from twin 52 all the way to monblades. other sizes are twin 54 and twin 58. Fuel injectors are a good safety mod to make sure you get the proper ammounts of fuel.. going lean sucks. SVO's are probably the cheapest. The factory maf sensor can supposedly handle 400 hp but i dont believe it. SLP, granetelli and a few other companies make bigger ones that flow better. theres other stuff too but im getting tired.

WEIGHT REDUCTION:
There is all kinds of crap you can take off these cars.. depends on how much you drive it. i drive my car every day without a/c and let me tell you its a lot easier to work on without it! ask anyone who has seen my engine bay! with all the weight reduction ive done ive dropped somewhere around 150 lbs.

well heres some stuff.. the other lt1 people will fill in the blanks

[Mars_302]

how about new spring kit for the broken ashtray or a new weather strip kit for the side window?

oh... nm...... :fart:


How about replacing those window motors once a year or having to drop everything in the ass end of the car to do a fuel pump, or have a water pump sit of the distributor so when it leaks the car fucks up........ :lol:

at any rate.....

L98 really need a better intake. Ive known ppl that ahve ported stock ones and gotten decent times, but a better intake is not cheap either. My boss orginal combo for 88 vette was a 383 stroker with self ported L98 alumn heads/intake/factory headers with a cam, roller rockers, throttle body, other few bolts on with DRs was a 12.2@108 I believe. This was back when lt1 were still fairly new and strokers werent even the big rage yet either.

[DaTruth]

A bunch of good information... Keep it coming...

[Rolling Thundah]

Turbonator????

and Tornado!

[Rolling Thundah]

How about replacing those window motors once a year or having to drop everything in the ass end of the car to do a fuel pump, or have a water pump sit of the distributor so when it leaks the car fucks up........ :lol:

at any rate.....

L98 really need a better intake. Ive known ppl that ahve ported stock ones and gotten decent times, but a better intake is not cheap either. My boss orginal combo for 88 vette was a 383 stroker with self ported L98 alumn heads/intake/factory headers with a cam, roller rockers, throttle body, other few bolts on with DRs was a 12.2@108 I believe. This was back when lt1 were still fairly new and strokers werent even the big rage yet either.

l98's should use the lt1 intake , 35 hp gains.

[JuicedSS262]

I allways found that just a teeny tiny bit of good ole Nitrous Oxide wakes them bad boys up the best.

[Jakethesnake]

vortec ysi blowers ;-)

[ZDriver96]

I allways found that just a teeny tiny bit of good ole Nitrous Oxide wakes them bad boys up the best.

maybe thatswhy mine doesnt wake :dunno:

[Sneakin Deacon]

snails and sulfuric oxide (correct term?) are the 2 goodies i like. seem to work with EVERYTHING

[NXz28]

HEADS/CAM WORK:
Lt1s respond very well to even slight changes in the cylinder heads. anything from a freshen up (3-4 angle valve job, pocket port) to a full out port of the stock heads will net you great gains if matched correctly with a cam. up the lift with some 1.6 rockers and your set. i know people who have got these motors in the upward range of 7k rpms. as for aftermarket heads, afr makes some good deals ranging from like 185cfm to 225-230, also edelbrock, trickflow, and the all popular LT4 heads are available. As for cams, the most popular off the shelf cams are the lt4 hotcam and cc305 (pretty mild) to the cc306 and GM847 (heafty) a few guys like joe overton and lloyd elliot make customs that are pretty stout.


Stock LT1 heads flow right around 200-210cfm and peaking around .500 lift. The 180, 195, 210, 215 numbers for the AFR heads are the intake port volume, not cfm numbers.

[trigger]

well, since I'm about to do my L98..

TPiS MiniRam Intake - this is a single piece intake/manifold WITHOUT runners.
52mm Throttle Body
Custom Intake
30# Injectors
Heads
Cam
Pistons
Fresh Stock Block & Crank

The best thing for an L98 is a new intake.

[Dead Hooker]

I am talking about everything from the basic GM 350 4 bolt main crate engine to the current LS7. I want to know what works for L98's, LT1's, LT4's, LT5's, LS1's, LS6's, LS2's, LS7's, etc.... If you can give common aftermarket heads, cams, lids, filters, throttlebodies, etc.. I get asked these questions all the time. I am sure we have a wealth of knowledge out there. We just need to share..



Isn't that a little bit like asking..."Will someone please summarize quantum physics in 1200 words or less please????" :tard: :dunno:


But let me try anyway......

The more it costs and the neater it looks, the beter it'll work. :whoa:

[DaTruth]

Isn't that a little bit like asking..."Will someone please summarize quantum physics in 1200 words or less please????" :tard: :dunno:


But let me try anyway......

The more it costs and the neater it looks, the beter it'll work. :whoa:

I should have known I would get your love..

[myltwon]

the most common mod for LT1s is the Boat Anchor Delete Mod in which you swap in a real motor