pin height

[BSB67]

...........The block has a 2-21-69 casting date so I suppose it could have got the 69 pistons in it. It now has.......mild ported closed chamber heads ..

Yep, that combo is 10.3:1 CR. I had one like that: 915s with 68-69 pistons. I guess I still have it in pieces somewhere.

 

[Cranky]

Yep, that combo is 10.3:1 CR. I had one like that: 915s with 68-69 pistons. I guess I still have it in pieces somewhere.

That's the figure I got too....and was what I was shoot for.

 

[BSB67]

That's the figure I got too....and was what I was shoot for.

Never got it to run on 93 octane pump gas. It had a pretty small cam

 

[Cranky]

Never got it to run on 93 octane pump gas. It had a pretty small cam

I'm thinking the old Hemi grind cam might build too much cylinder pressure for 93 pump.....will find out soon I hope. At least pulling the grill out on a 66 Plymouth isn't hard if it needs to be pulled.

 

[BSB67]

I'm thinking the old Hemi grind cam might build too much cylinder pressure for 93 pump.....will find out soon I hope. At least pulling the grill out on a 66 Plymouth isn't hard if it needs to be pulled.

Kind of on point with what the OP is doing I think.

https://www.forbbodiesonly.com/moparforum/threads/post-your-13-second-combos.151544/#post-910957428

 

[gtxrt]

to top it off. 750 Edelbrock, ch4b , dual snorkel, hp manifolds and chrome valve covers. did the Newport come with 375 hp motor from the factory ?

 

[Curiousyellow71]

Looks like tnt was optional on a 67 Newport.
https://www.hamtramck-historical.co...ok/1967/67_Chrysler_Features_Options_0017.jpg

 

[Remusa12]

Got a set of 2295s in my current engine in my 62. With 906 heads and a comp gasket, barely 10 1/2 to one. Missed the "11 1/2 to one" by quite a bit! Got a set of Arias 12 1/2 to 1 that aren't even 11 1/2 in a maxwedge too.
In both cases, I'd rather have the compression they really are, than blueprint to spec.

I believe with the 2295s the 11 1/2 is with closed chamber heads you using open drops one point of compression which is usual

 

[Remusa12]

i got 1.457 + .545 = 2.002. think i did it right. so 350 horse and 375 hp have the same pin height.

View attachment 1190867 View attachment 1190870

I thought you were supposed to measure from the centre of the pin bore because it doesn't start at the top

 

[BSB67]

I thought you were supposed to measure from the centre of the pin bore because it doesn't start at the top

Look closer

 

[gtxrt]

I thought you were supposed to measure from the centre of the pin bore because it doesn't start at the top

pin is 1.009 divided by 2. so middle is .545 that i added in

 

[BSB67]

pin is 1.009 divided by 2. so middle is .545 that i added in

1.094"

Which, by the way, does make it 2.004"

 

[gtxrt]

1.094"

Which, by the way, does make it 2.004"

pin is 1.009 divided by 2. so middle is .545 that i added in

sorry miss print at 1.009 should have said 1.090, but did't know it was 1.094

 

[BSB67]

sorry miss print at 1.009 should have said 1.090, but did't know it was 1.094

I know it was a typo. Just messing with ya a little.

 

[gtxrt]

short block back together. came out to 8-10 thousand in the hole after taking 7 thousand off the deck. compression will be 9.75.