M60b40 VS s50b30 E30 Swap

[The Dark Side of Will]

I've worked a good bit with Chevies. My dad and I are currently working on a 5.3 iron block Datsun. I know how big the Chevy bellhousing pattern is.

Maybe I'm overestimating the size of the E30 transmission tunnel.

[Mr Two]

Just some quick google searching and I'm getting weight ranges of 380-430 for alu block Ls1s, and 400-440 ish for M62s...

I know Ls1s have sleeved blocks, and M62s don't, and it looks like the block itself on the M62 is smaller, which may help with the M62's heavier heads.

[bmwmech1]

Just some quick google searching and I'm getting weight ranges of 380-430 for alu block Ls1s, and 400-440 ish for M62s...

I know Ls1s have sleeved blocks, and M62s don't, and it looks like the block itself on the M62 is smaller, which may help with the M62's heavier heads.

Quite a bit heavier heads, I would guess. Considering the M62 has 4 cams to the Ls1's 1 cam, I'd say the "myth" of the M6x's being heavy engines is pretty much squashed, if these weights are accurate. Curious to compare the weight of an S14 to these weights...;)

Garey

EDIT: Quick search says 350lbs, but doesn't say "fully dressed", so an M6x weighs approximately 50-90lbs more than an S14, but with roughly the same length. Hmmmm... not such a bad choice, now...

[Jean]

4cams vs 2 you mean ^ above, not 1 for ls1 ;)

I'll weight these bare and with all accessories to put all these myths behind.

[Lurker27]

LS1s are OHV - they have one camshaft, and pushrods.

[Jean]

1 cam for 2 heads??

[Wh33lhop]

1 cam for 2 heads??

Really Jean? I'd expect more from you ;)

Pushrod (OHV) motors have one cam in the cylinder valley. The pushrods go between the cam and the lifters.

[Lurker27]

http://en.wikipedia.org/wiki/Overhead_valve

[Jean]

HA! My bad, for some reason I thought they had ONE cam per SIDE with push-rods!

/feeldumb.

[e30polak]

Just some quick google searching and I'm getting weight ranges of 380-430 for alu block Ls1s, and 400-440 ish for M62s...

I know Ls1s have sleeved blocks, and M62s don't, and it looks like the block itself on the M62 is smaller, which may help with the M62's heavier heads.

Told you the LS1 is lighter! :p

[e30polak]

EDIT: Quick search says 350lbs, but doesn't say "fully dressed", so an M6x weighs approximately 50-90lbs more than an S14, but with roughly the same length. Hmmmm... not such a bad choice, now...

An s14 weighs around 240 lbs, so your looking at a minimum of 110 lbs extra, also the s14 trans weighs maybe 60 lbs, the m60/2 trans definitely weighs more. Even though it's not really any further over the nose, you WILL feel the 110 + lb difference when it comes to handling and braking, especially on the track.

[Mr Two]

The 5 speeds look tiny, though. Like, shorter than an S14 trans.

[bmwmech1]

An s14 weighs around 240 lbs, so your looking at a minimum of 110 lbs extra, also the s14 trans weighs maybe 60 lbs, the m60/2 trans definitely weighs more. Even though it's not really any further over the nose, you WILL feel the 110 + lb difference when it comes to handling and braking, especially on the track.

I would agree that you may feel it on the track, but for a street car, the huge difference in torque will make for quite a lively E30. There are quite a few guys who are tracking their V8 E30's and I've not heard them say anything about a nose heavy car. Springs and sways can help offset that quite a bit. And the 5 speed V8 trans is the E36 M3 trans with a V8 bellhousing... I doubt it weighs more than 60lbs. Now the V8 6 speed is a different story entirely... it may weigh close to or over 100lbs... it's a truck transmission, lol! It's all up to the preference of the owner...

Garey

[bmwmech1]

HA! My bad, for some reason I thought they had ONE cam per SIDE with push-rods!

/feeldumb.

I am ashamed of you, lol!

Garey

[e30polak]

I would agree that you may feel it on the track, but for a street car, the huge difference in torque will make for quite a lively E30. There are quite a few guys who are tracking their V8 E30's and I've not heard them say anything about a nose heavy car. Springs and sways can help offset that quite a bit. And the 5 speed V8 trans is the E36 M3 trans with a V8 bellhousing... I doubt it weighs more than 60lbs. Now the V8 6 speed is a different story entirely... it may weigh close to or over 100lbs... it's a truck transmission, lol! It's all up to the preference of the owner...

Garey

I totally agree, an m6x e30 = street demon if you have a proper tire and suspension set-up! :woowoo: