6bolt 7bolt non turbo?

[talontuner1997]

Hey everyone i recently purchased a new long block from some guy... what engine is this a 6bolt or 7bolt... it looks to me either a 6bolt head on a 7bolt bottom end or its a full 6bolt motor. The reason i think this is the intake ports are much bigger and some parts do not bolt up the same. Heres some pics.

 

[talontuner1997]

i know im not suppost to bump but i couldnt get all the pics in one post.

 

[DoyoFCT]

looks like a 6bolt head on a 7bolt lower end.. to me. unless he ported the crap out of the the intake ports. but it doesnt appear to be the case.

was it supposed to be a 6bolt?

 

[oldman420]

Need a picture of the oil pan.

 

[talontuner1997]

i thought it was a 7bolt when i bought it. as far as i can tell the intake ports have not been ported. it did not come with an oil pan. i need to be 100% positive because im selling my old long block and if this new one turns out to be a non turbo bottom end or head then im screwed.

 

[Locke]

The NT block is missing the oil squirters, which shouldn't really "screw" you. Many people around here are using NT blocks on their 6bolt builds with no issues.

 

[talontuner1997]

is their a way to tell if its a turbo or non turbo bottom end? are the oil pans different i know the 6bolt bottom end and the 7bolt turbo bottom end oil pans are different.

 

[ezz-e]

This is defenetly a 90 to 94 Head on a 95 to 99 7bolt 4g63T bottom end...
Basically this is a best of both worlds. A 8:5:1 pistons with Large ports for some good mid to top end power.Thats if it dose not crankwalk. Notice how the main caps are all a one pice Gaurd, thats a very strong design.It was only used in the 95 up 7 bolt block's. Well as for the head its a 90-94 head you can tell by the bolt pattern your 95-up head does not bring studs on the intake side.

 

[talontuner1997]

This is defenetly a 90 to 94 Head on a 95 to 99 7bolt 4g63T bottom end...
Basically this is a best of both worlds. A 8:5:1 pistons with Large ports for some good mid to top end power.Thats if it dose not crankwalk. Notice how the main caps are all a one pice Gaurd, thats a very strong design.It was only used in the 95 up 7 bolt block's. Well as for the head its a 90-94 head you can tell by the bolt pattern your 95-up head does not bring studs on the intake side.

thanks man that helps alot.. what is the 2g pistons ratio isnt it more then 8;5;1?

 

[fourreGsixty3]

Nope its 8.5:1 for 2G piston's.

 

[Littlebeeper]

glad you got answers. woulda been really easy if you just looked at the bolts holding the flywheel (its either 6 or 7 and the motor is just sitting there). also check for a turbo drain hole in the side fo the oil pan to see if its a turbo motor (has to be since it has the main caps in one peice as previously stated)

 

[talontuner1997]

my buddy telling me the valves need to be switched around if i want to use it because they will basically be backwards is this true?

 

[Littlebeeper]

don't really know what he means by that, but you don't have to mess with any part of the valvetrain. the motor will drop right in. its the miss fire code that sometimes lights up the check engine light you may run into. of course it may just run with out a hitch too

 

[ezz-e]

Actually He would not have to Worry aboute anycodes coming up...
Your Still using the 95 up Bottom end the fire-order its still the same as the cars.
You must only worry aboute that and all the other problems when you swap to a 1G enigne

 

[Turblown]

I'm pretty sure this is a 92.5 to 94 7-bolt head, but I would wait for others to chime in.

1.) Bigger Ports = 1st Gen
2.) 7 regular exhaust manifold studs + 2 large exhuast manifold studs on outer ends = 7 bolt

I also belive this is a non-turbo head (double check) since the cams look different (stamped 26, 27). I know the only difference between the turbo and non-turbo head is a "more aggressive" intake cam in the first gens. I believe on the turbo head both cams are the same part number.

As far as the block goes... I would check the flywheel first for the number of bolts. The oil pan will have an indent on the side for a 7-bolt and NO indent for a 6-bolt. If you don't have the oil pan, the mating surface where the oil pan goes on the block will be uneven (different levels) for a 7-bolt and a 6-bolt should have a flat/even mating surface. Check out the VFAQ. It also looks like this is a turbo block since I can see a knock sensor in between the 2nd and 3rd cylinders in the last picture. The non-turbo did not come with a knock sensor stock, but it could have been added later.

 

[talontuner1997]

Did they even make a 1g 7bolt head? i thought i heard it somewhere before but not sure. As for the cams being marked different i have no clue.

 

[pitbull419]

Yes they made a 1g 7bolt.It was made from 92.5 till 94
Like stated above it has a knock sensor so it is turbo unless somebody added it.Even if they did the Only difference is oil squirters and plenty of ppl build high hp engines without them.

 

[talontuner1997]

i screwed the knock sensor in their. I would assume the block wouldn't have a spot for it if it wasn't turbo. I know the bottom end is turbo, im just curious i the head is a 6bolt or 1g 7bolt turbo, since two different ppl told me two different things.

 

[Locke]

i screwed the knock sensor in their. I would assume the block wouldn't have a spot for it if it wasn't turbo.

To clarify; The NT block is the same as the turbo block. It has the same provisions for the knock sensor, just no knock sensor was used on the 1gnt's.