L36 n/a mods including top swap

**suitercrew** · 10-18-2015

Hi I'm new to the forum and had some question about my project. I just got a 99 Gp Gt coupe with 90k on it, I've had it for a couple months and it runs great but I want more power. I would be happy with being able to run with a gtp so my question is top swap or should I leave it n/a and what mods should I get. I am an OK do it yourselfr but have only gotten as deep as replacing lim and water pumps kinda low level experience like that. Can someone explain how had it would be to do a top swap and prices of getting to my goal.

Sent from my LG-D851 using Tapatalk

**theaceofspades** · 10-18-2015

There's a write up on here for the top swa

Sent from my iPhone using Tapatalk

**Scottydoggs** · 10-18-2015

im running a top swap with a mild head port and 1.95 rockers and headers, stock pulley. it pulls damn nice.

my car came sc and it blew up, so i technically bottom swapped it. so i have a hd tranny.

**suitercrew** · 10-18-2015

Could you post a link for the top swap post, I searched for about an hour and couldn't find anything. :\

Sent from my LG-D851 using Tapatalk

**Scottydoggs** · 10-18-2015

http://www.grandprixforums.net/threa...s-of-3800-Info

**suitercrew** · 10-18-2015

Thank you very much its perfect!! Now if I decided to stay n/a could I achieve my 200whp basically what a stock gtp puts out with rockers and Bolt-ons I don't believe I'm experienced enough to do a cam by myself.

Sent from my LG-D851 using Tapatalk

**suitercrew** · 10-18-2015

I found a guy that has a 98 gtp motor that has a spun bearing but I asked him how much for everything from the heads and up and he said 120$ (he does not have the m90) is this a good deal? And what should I look for as far as potential damage or wear the parts might have. Could the spun bearing damage the heads? Thanks!

Sent from my LG-D851 using Tapatalk

**Scottydoggs** · 10-18-2015

id try to beat em down some, at a junk yard heads are like 30 or 40 a side.

theres a gen 5 blower and lim for sale on the site here rather cheap too.

**Fivefingerdeathpunch** · 10-18-2015

N/A needs cam swap to even come close to 200whp on motor, along with plog/downpipe/rockers/hv3 and whatever else.

Also note that whatever you decide to do, you'll want a custom tune with a wideband installed in the vehicle. And most "shops" don't do 3800 cars as most are either LS based or Euro/DSM.

**suitercrew** · 10-18-2015

Can't I get an intense or zzp tune for a topswap and what's a wideband?

Sent from my LG-D851 using Tapatalk

**suitercrew** · 10-18-2015

Scottydoggs how much better is the gen 5 over the 3

Sent from my LG-D851 using Tapatalk

**Fivefingerdeathpunch** · 10-18-2015

Nope.

You are taking a high compression block and adding boost, it was never designed for boost. A "canned"/"Bought" tune will not be good enough.

Google wideband and what it does, you have alot of reading to do.

**Scottydoggs** · 10-18-2015

its a little better. gen 3's are cheaper still and do the job.

a wideband is a air fuel sensor. works off a o2 sensor you install in the exhaust.

**Scottydoggs** · 10-18-2015

Originally Posted by Fivefingerdeathpunch

Nope.

You are taking a high compression block and adding boost, it was never designed for boost. A "canned"/"Bought" tune will not be good enough.

Google wideband and what it does, you have alot of reading to do.

you can get a canned tune, but in car is so much better. what i have, self tuned.

you also need headers for a top swap.

**Fivefingerdeathpunch** · 10-18-2015

I'm not giving away free answers, you want to mod a car read up and do it the right way.

A canned tune will never suffice. Every motor with a top swap is going to respond different, I wouldn't risk my motor over it.

**suitercrew** · 10-18-2015

The l67 heads? Or aftermarket due to the high compression?

Sent from my LG-D851 using Tapatalk

**Scottydoggs** · 10-18-2015

l67 heads, or l32 heads.

**suitercrew** · 10-18-2015

Fivefinger I read a how to on top swaps here on the forum it didn't say anything about installing a wideband or headers for that matter so I'm just trying to figure out if there's anything I'm missing that wasn't in the tutorial.

Sent from my LG-D851 using Tapatalk

**suitercrew** · 10-18-2015

Ya the guy is throwing in the l67 heads. How are the l36 and l67 headers different

Sent from my LG-D851 using Tapatalk

**Fivefingerdeathpunch** · 10-18-2015

I updated the thread now.

Thread: L36 n/a mods including top swap

Thread Tools

Display

Similar Threads

top swap finished, just scored a gen v now what for supporting mods?

2000 Gtp with l32 swap and small mods

Engine Swap/Mods?

good avice on engine mods not doing a top swap

suporting mods for top swap

Bookmarks