What's considered a bolt-on?
 

Like the title says, I'm curious what people consider bolt-ons. The following I pretty much assume are "bolt-ons":

- Exhaust
- Induction (lid, bellows, TB, filter, and MAF)
- Pulleys
- Suspension


But are these?

- Springs/rockers
- Cam
- Heads
- Pushrods
- Intake manifold

I consider the intake a bolt-on, maybe the springs/rockers and pushrods could be. but the heads and cam are not.

Normally, anything that does not touch oil. The exceptions are springs and rockers.

Realistically, whatever someone will believe.

My thoughts exactly. I say if you have to crack open the motor (intake manifold excluded) it's not a bolt on.

:stupid:

I don't even consider rockers a bolt-on. If it touches engine oil or is a power adder it's not a bolt-on. As for the rockers, think about it. You can add high ratio rockers that increase the lift of the cam, yet a cam isn't a bolt-on. Doesn't quite make sense to consider it a bolt-on IMO.

depends how you look at it , I can " bolt on" a supercharger :naughty:

I guess if you just ignore or significantly alter the definition of a bolt-on.

o god, this again... to be politically correct everything on a motor is a bolt on:):jest: like bolting on a 408 or 422 twin 60 setup...

Im with the strict definition that a bolton does not touch oil. A full bolton car may never have had a valve cover off. Although I would say gears are a bolton mod since its not touching engine oil, but gear oil. Now is a built TH400 and 4800 stall converter considered a bolton? :)

I'd say a built TH400 and 4800 stall converter could be considered bolt-ons. Bolt-ons are usually power adding mods though. If it doesn't add power I don't think it can really be considered a "bolt-on", but is in another category of mods.

1. Valve covers must not be removed.
2. Everything, no farther than heads or cam.
3. Doesn't everything bolt on?

EXACTLY

There is definetly a fine line here, IMO though rockers are a bolton, but then again thats just my opinion. What makes me think this way is the ease of which this modification can be done. Remove coils, valve covers and unbolt the rocker arm plate. Tada! Bolt on the new rockers to the plate and bolt that on top of your valves. Springs on the other hand step further into that other side of the line. Pushrods are right on par with the rockers though, at least thats what I think.

Ease of performing the mod doesn't/shouldn't have anything to do with it.

Again, just my opinion............

hell I dont see why everyone is being so picky. how I see it you have to bolt all of those on. so they are all bolt on's to me..

Right. So then everything is a bolt-on. What would the point of that be? :rolleyes:

Intake is a bolt on. Cam & springs is not.

What is a stall considered?

I figured bolt-ons were quick and easy mods. Not extensive.