The kit I'm using is from extremepsi and consist of the following:
7-Bolt 4g63 2.1L stroker long rod 156mm
Manley Billet 94mm crank
Manley 156mm I-Beam rods
Manley 85.5 (unsure of comp ration 8.5:1 or 10:1)
ACL Race Tri Metal rod bearings
ACL Tri Meyal Main Bearings

This is the 2.1 stroker long rod based on factory bore...I'm using 85.5:
Standard Specs:
Stroke: 94mm
Factory Bore: 85mm
Rod Length: 156mm
Wrist Pin Height: 1.012”
Displacement: 2133cc or 2.1L
Rod/Stroke Ratio: 1.65
Piston Speed @ 1,000RPM: 10.27 FPS


I have two questions and they are based off the information above and the fact that I have an automatic fwd that is street/drag. Running 93octane on the street and 110octane at the strip. Looking to run an HX40 in a T3 BEP and have all the supporting mods to withstand 800hp.

What would be a great 7-bolt cam/head setup to go with the bottom end based on the information? I was thinking Manley internals for the head but there are a lot of good options out there and I'd like to hear from some pros.

What would be the best choice for my compression ratio based on the information above? Please explain.

Thanks in advance!!!

Contrary to what many people will tell you, do 8.5:1 for pump gas. You'll be able to run more boost. You'll want to run some kind of aftermarket intake manifold if you're looking to rev that thing to what it's capable of.

We only run Kiggly springs and retainers in our heads, as they're proven awesome.

Ferrea valves are very nice.

Deshrouded combustion chambers and some nice port work will go a long way on pump gas and high rpm.

I'd also use something like Kelford 276HL cams.

Let me know if we can put something together for you

With that turbo I would also recommend the 8.5 : 1 CR. Especially on 93 pump otherwise you won't be using the turbo to it's full capability. What kind of boost are you looking to run? Something between 25-30? More?

Match the springs to whatever the cams you decide on using need. You can't really go wrong with Kiggly's though.

Also look at some sort of upgraded intake manifold if you don't have one.

RWD4G63 said:

Contrary to what many people will tell you, do 8.5:1 for pump gas. You'll be able to run more boost. You'll want to run some kind of aftermarket intake manifold if you're looking to rev that thing to what it's capable of.

We only run Kiggly springs and retainers in our heads, as they're proven awesome.

Ferrea valves are very nice.

Deshrouded combustion chambers and some nice port work will go a long way on pump gas and high rpm.

I'd also use something like Kelford 276HL cams.

Let me know if we can put something together for you

Click to expand...

Thanks for the feedback, much appreciated. I figured 8.5:1 would be the big hit here but no reason not to ask when there's so much knowledge floating around out there. As for an intake manifold, I'm still up in the air with which one to use. I do know it would help out a lot though. Do you suggest anything in particular?

Great suggestion for head internals too. I may just end up going that route. As for deshrouding and porting, that is something I cannot do as I do not have the machines for that kind of work. I'm looking to build this project with my own two hands, besides machine work needed to the head.
(I will PM you about some parts and machine work needed.)

Thanks a lot,
Jon

Xit40 said:

With that turbo I would also recommend the 8.5 : 1 CR. Especially on 93 pump otherwise you won't be using the turbo to it's full capability. What kind of boost are you looking to run? Something between 25-30? More?

Match the springs to whatever the cams you decide on using need. You can't really go wrong with Kiggly's though.

Also look at some sort of upgraded intake manifold if you don't have one.

Click to expand...

Hey, thanks for the response. I don't have a certain boost level in mind, as I am looking to have a nice solid tune that isn't maxed out all of the time. I'm looking to have a lower boost level set for my weekend cruising and a much higher boost level tune when drag racing. I'm also not looking to race a whole bunch. I'm more or less building my car to suit my needs and have room to grow just in case I want more power later. I find it funny when people tell me the build I am doing is overkill for my goals. I am not one to push what I have to the extreme and drive the tires right off of it and have it last a short time. Im building what I think will be more than enough for this particular car so it will last quite a while.

Still undecided on what intake manifold to use.

Thanks
Jon

We like to use Magnus intake manifolds on our 7-bolt or Evo stuff, but any aftermarket intake from a reputable manufacturer is going to free up the top end of the powerband.