Gen 4 Intake manifold and heads

[2badvipers]

Does anyone know if a gen 4 intake manifold will have hood clearance problems on a gen 2 car ??? Im thinking of doing a gen 4 conversion on my 98 gts...

[anton28]

What are you going to do about the drive by wire throttle boddies?

[2badvipers]

I plan on using manual throttle boddies.... I just bought the gen 4 heads, valve covers and intake.. Theres a youtube video with a gen 3 viper with gen 4 heads and intake with manual throttle boddies.... I was gona go with some gts r racing heads but the gen 4s flow much better...

[2badvipers]

Gen 4 intake.... Will this thing fit under a gen 2 hood???

[anton28]

Originally Posted by 2badvipers

I plan on using manual throttle boddies.... I just bought the gen 4 heads, valve covers and intake.. Theres a youtube video with a gen 3 viper with gen 4 heads and intake with manual throttle boddies.... I was gona go with some gts r racing heads but the gen 4s flow much better...

If your talking about the black convertible then that car was built by viper specialties. Those are custom made throttle boddies and the guy doesn't sell them with out the entire 17k gen 4 conv package.

I only asked you this because I don't think you've done enough research to see what's really involved in this conversion. Clearance of the intake is the least of your potential issues.

If you do have a plan up your sleeve please do tell. I've been looking in to this myself for some time and have done extensive research.

[2badvipers]

My machinist buddy is going to mill some aluminum adapter plates and bolt on two 70 mm throttle boddies... Another problem is the block surface of the heads has extra cooling holes wich will be either welded or tappped and plugged but im thinking welded would be best? Last problem is no front bolt lugs for power steering so im going to see if our local head welding shop can weld on three lugs on the front of the head? Will probably cut the lugs off one of the extra gen 2 heads i have and weld them on the gen 4 head? I wish i could weld aluminum Im not going to run the individual coil packs will just run the spark plug wires under the valve cover covers to the plugs.... Still have to figure out headers? I probably will have them custom made with the gen 4 bolt up flange as i dont think a gen 4 car aftermarket header will work ??? Could also run some cheap gen 4 stock exhaust manifold for now..... I hope this all works??? Maybe someone can give me some smarter advise???

[Netko]

With the right amount of $$$...


ANYTHING is possible.


Sent from AutoGuide.com Free App

[2badvipers]

This is the underside of a gen 4 intake...

[anton28]

I stand corrected. You did your research! Looking forward to see how you do your throttle bodies. I would just run thegen 4 intake manifolds. You can pick them up for 150-250 in almost new condition. Looks like you have the PS issue worked out. I would leave the inginiton system alone as well.

I'm looking to do this on a gen 3. Wonder if I can use the 70mm gen two throttle bodies???

[2badvipers]

I agree the gen 4 exhaust manifolds should work till i shell out the money for some custom made headers ... I think the stock throttle boddies will work but would like to get accufabs... Probably gona do a cam change as well...

[2badvipers]

Gen 3 intake that i was going to use with a set of GTS R racing heads.... The gen 4 is a better choice...

[2badvipers]

I really wanted to do the GTS R head swap to keep my car more original...

[anton28]

How far off are the gen2 throttle boddies from being able to mount them to the gen4 intake?

How big are the stock gen4 throttle bodies? 65mm? 70mm?

[primedtsi]

Where are you guys finding the gen4 intake manifolds for $150-250?

[anton28]

Originally Posted by primedtsi

Where are you guys finding the gen4 intake manifolds for $150-250?

Exhaust manifolds

[2badvipers]

Originally Posted by anton28

How far off are the gen2 throttle boddies from being able to mount them to the gen4 intake?

How big are the stock gen4 throttle bodies? 65mm? 70mm?

The stock Gen 2 throttle boddies taper down from a 62mm to a 60mm at the narrowest part of the throat. Some measure 59.5. They are spec at 60mm... I need to find out what a stock gen 4 throttle body size is???

[anton28]

Originally Posted by 2badvipers

The stock Gen 2 throttle boddies taper down from a 62mm to a 60mm at the narrowest part of the throat. Some measure 59.5. They are spec at 60mm... I need to find out what a stock gen 4 throttle body size is???

I assume they wont even bolt up, right? As you mentioned you will need a spacer/adapter made, correct?

[Green viper]

I want to do this also keep posting as you go thur the steps I think this can be done for less than 17k

[anton28]

Originally Posted by Green viper

I want to do this also keep posting as you go thur the steps I think this can be done for less than 17k

Much much less!

[Final GTS]

Originally Posted by Green viper

I want to do this also keep posting as you go thur the steps I think this can be done for less than 17k

Of course it can be done for less than 17K, considering ~8K of that is ARP hardware, breather system, plug wires, installation, tuning, Belanger upgrade, custom cam, pushrod upgrade and SCT device. Do it with used standard parts, and its much less.

But seeing as we don't sell used parts kits or half-complete packages, its a tad tough to price it much lower

I do not think its fair to compare price points of a complete, installed, tuned package which has been properly engineered to a used-parts-deal gathered package with adapters and more standard part selection. There are always cheaper options- ours just doesn't happen to use any of them by choice.

Good luck in any case, but I fear you guys are going to find out its not as easy as you think it is to make everything fit and work correctly without looking cobbled together or causing potential problems. If power is all you are after at any cost, there are much easier ways to solve that.