Don Terrill’s Speed-Talk

flyingwedge wrote:The motor, that begs to be built, is the rover V8 with lotus 907 heads,(same bore spacing). 907 heads are easy to get via Jensen Healey. Major obstacle is getting 4 custom/round lobe cams made or a single-plane crank. Costly proposition, either way. flyingwedge.

Being that the ROVER alloy V8 is almost the same as the BUICK / OLDS F85 block how about a set of REPCO - BRABHAM cyl heads .... mind you, you will have to use a flat plane crank or alter the cams these were 2 valve heads intake 41.3mm ex 34.9mm the engine weighed 300 lb and produced 298 bhp @ 7500

Warpspeed wrote: But how about some of the Japanese DOHC four valve V8s ?
Now used in many SUVs there are enough of them around and they are not expensive, and many go faster bits are available from Japan.

Good point.I drove a Toyota Tundra the other day. 4 door, 4x4, etc. It was strong for a 5.7 at over 5000 lbs. It would be impressive at 2800 lbs.

Ron E wrote:

Warpspeed wrote: But how about some of the Japanese DOHC four valve V8s ?
Now used in many SUVs there are enough of them around and they are not expensive, and many go faster bits are available from Japan.

Good point.I drove a Toyota Tundra the other day. 4 door, 4x4, etc. It was strong for a 5.7 at over 5000 lbs. It would be impressive at 2800 lbs.

>> Nice concept, but what is the bore spacing ? Not exactly horsehoes here. We need a lil' better than "close". Rover/sbb is 4.240". Then we'll need a crank, to handle all that impressive power. Cheers, flyingwedge.

flyingwedge wrote:Then we'll need a crank, to handle all that impressive power.
Cheers, flyingwedge.

The Toyota DOHC four valve V8 engines actually come with the crank already installed.
Made of forged steel too.

and they have been pist - on too !

I'm going to trade my Toyota HalfTundra in for a 3/4 Tundra.

lada ok wrote:and they have been pist - on too !

Is this a good thing or bad?

Ken

Kenova wrote:

lada ok wrote:and they have been pist - on too !

Is this a good thing or bad?

Ken

It very good have pissed on, joined to con rod, what make engine go.

Off topic but not really.

Anybody remember the AERO BBC 4-valve pushrod heads that had the short cross ways pushrod and bell-crank that actuated the exhaust valves??

pdq67

anyone here know if Weslake ever got a patent on his 32v heads???



i dont get how arao managed to get one concidering his is based off of the weslakes.

pdq67 wrote:
Anybody remember the AERO BBC 4-valve pushrod heads that had the short cross ways pushrod and bell-crank that actuated the exhaust valves??

pdq67

those were not araos, they are 32v valleyheads

http://www.valleyhead.com/thunder.html


ford also made a simular 5.0L setup back in the early 90's


arias also used a simular idler pushrod on there 2v bbc hemi

Those of you who are familiar with Arias Hemi's will love what he has done for the LS motors. Here's a shot of an Arias Hemi LSX build I did for Nick Arias. Heads are 71cc shallow chamber hemis. Flows 400+ As with these types of configurations the push rod angles are extreme. These heads are huge.

Larry

[attachment=0]001.JPG[/attachment

neat pic, rocker assemblys look decent. I understand on the arias sbf conversion you have to get a custom ls style cam cut for the sbf to use them, dont know if that would effect/limit power?.

few more 32V weslake pics.

anyone here by chance got any info on a similar multi valve sbc pushrod conversion, M/T's old pushrod 24V sbc head conversion?.