Re: Kaase SR-71 Cylinder Heads

nascar429 October 18th 2018, 10:06 pm

Thanks Jon.
For your input.

boss9coupe November 8th 2018, 12:54 am

Charlie

I weighed a titanium valve that Kaase offers as a upgrade for the SR-71 heads.. was very surprised to find it weighed 111g with a lash cap and 108g without that's a big reduction!

So not to question your findings but could you verify again that 178g for the steel intake valve you listed is correct?...if that is the case it's a great upgrade.. I have never personally seen that much weight reduction when going to Titanium.

Kaase SR-71 Cylinder Heads - Page 2 45630810

Carbguy November 8th 2018, 12:15 pm

boss9coupe wrote:
Charlie

I just weighed a Titanium valve that Jon offers as a upgrade for the SR-71 heads.. was very surprised to find it weighed 111g with a lash cap and 108g without that's a big reduction!

So not to question your findings but could you verify again that 178g for the steel intake valve you listed is correct?...if that is the case it's a great upgrade.. I have never personally seen that much weight reduction when going to Titanium.

Charlie is correct on the weight...

427HISS July 11th 2021, 8:07 am

I know this thread is s little, dated, but what are the differences in performances between the P-51 heads vs SR-71 heads ?
I'm setting up a 460/ 521, so I'm wondering about the HP/TQ and costs.,

Dave De July 21st 2021, 9:44 pm

427HISS wrote:I know this thread is s little, dated, but what are the differences in performances between the P-51 heads vs SR-71 heads ?
I'm setting up a 460/ 521, so I'm wondering about the HP/TQ and costs.,

SR-71's out of the box are fairly equal to max effort P-51's from my experience with a 580 cube package.

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