[tvc2389]

hey i have an 86 gt. i just pulled the motor and stripped it. i was wondering what would be the best option to make power but also for it to be a strong bottom end. i have alota parts that i wanna build this motor with, they include:
- gt-40p heads
-shorty headers
-24 pound injectors
-cobra upper and lower intake manifold
-comp cam 512 lift

i already have gears and a new t-5 tranny. i was just wondering are all these parts going to be compatable with eachother and if not wat modifications am i gonna have to make, such as push rods, valve springs, rockers n such to adjust to my cam. any info would help a shitload. i wanna get this back together and see wat kinda power im gonna make.

[White Thunder]

scrap the cobra shit and build it right....any stroker kit is stronger than the stock stuff

[Tony_90fox]

that is a good budget build, very similar to what i have.

is this speed density or mass air? If mass air, you might want to get a bigger meter calibrated to those injectors.

you will always want to check PTV, and get an adjustable pushrod to check for the correct pushrod lenth..also a good set of roller rockers 1.6 or 1.7 will be better than the stock rockers. go ahead and get a good set of springs too. comp cams has some pretty cheap...FMS also makes some specially for GT40/GT40P heads.

[tvc2389]

yea i have a mass air conversion for it to

[86ttops]

Are you changing pistions? they are flat top in 86 to build more comression dont no a hole lot about building motors but do no you cant add a cam to a stock 86 motor i would think that cam would drive holes in your pistions

[Tony_90fox]

sounds like a good start is to get a good bottom end/stroker kit for it

[tvc2389]

aright so now ive decided in the stroker kit. now the question is which kit would be the best for the 512 cam i have

[Stangzilla]

Originally Posted by 86ttops Are you changing pistions? they are flat top in 86 to build more comression dont no a hole lot about building motors but do no you cant add a cam to a stock 86 motor i would think that cam would drive holes in your pistions

He did not say anything about a stock motor,and he said he has a mass-air kit for it.. Pay attention son...

[Stangzilla]

Originally Posted by tvc2389 aright so now ive decided in the stroker kit. now the question is which kit would be the best for the 512 cam i have

Get rid of that cam too. Go bigger with that also.. Might as well. Its not what stroker kit goes with your cam its what cam goes with your stroker kit...

[e3sean]

Originally Posted by tvc2389 aright so now ive decided in the stroker kit. now the question is which kit would be the best for the 512 cam i have

dont build your engine around around your cam get your cam last if u have to sell that one do so..

i am almost exactly where u are

my 347 kit is getting put in the engine now

i have gt40P heads ported/polished on a flow bench
gt40(explorer) intake
347stroker kit fordged rods/fordged flattop pistons
39lb injectors
mass air conversion
freshly rebuilt t-5
still deciding on 373 or 355 gears
awaiting subframe connectors
still deciding on electric or flex fan
high volume oil pump
255 lph walbro fuel pump

[Stangzilla]

still deciding on electric or flex fan

Go electric.... for sure..

[86ttops]

I know but he didnt say he was changing the bottom for sure just pointing out the facts about the flat top pistion so back at ya And what does mass air have to do with it?

Originally Posted by Stangzilla He did not say anything about a stock motor,and he said he has a mass-air kit for it.. Pay attention son...

[White Thunder]

yes cam should be one of the last things....go 347......

[86ttops]

piss on it go 351w thats what iam going to do and maybe stroke that out after i get it back together

[e3sean]

Originally Posted by Stangzilla still deciding on electric or flex fan Go electric.... for sure..

ya thats what i am thinking..

[Stangzilla]

Originally Posted by 86ttops I know but he didnt say he was changing the bottom for sure just pointing out the facts about the flat top pistion so back at ya And what does mass air have to do with it?

Because you said you cant change the cam in a stock motor, and you are right if it was a stock 86 motor with speed density it would run like shit. Thats what it has to do with it..

[Stangzilla]

Originally Posted by 86ttops piss on it go 351w thats what iam going to do and maybe stroke that out after i get it back together

Dont you want to stroke it before its together. I always have better success that way..

[e3sean]

if its out he may as well stroke it...wait what are we talking about?? well ither way stroke it

[Stangzilla]

Yeah Stroke It!! Wait R We Talkin About Engines Anymore?!!!

[ujslost]

hell man either way stroke the engine and your "rod" when your done with the engine.