So far we are very impressed. I ordered 1 of Summit's new SBC blocks in 2pc rear seal. We ordered a 4" bore block so that we would be able to insure the cylinders were straight and to GM spec. The guys put the block in the Rottler F69A yesterday and started to probe. Must say out of all the aftermarkett blocks we have had on the machine, the Summit block was the closest to GM print. Cylinder were only shifted .0015". To square deck the banks to spec it too .002" on one side and .003" on the other. Checking lifter bore location and cylinder wall thickness after boring and honing to 4.125". Main bore in the middle of factory spec.
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cstraub
So far this new Summit SBC Iron Block impresses....
So far we are very impressed. I ordered 1 of Summit's new SBC blocks in 2pc rear seal. We ordered a 4" bore block so that we would be able to insure the cylinders were straight and to GM spec. The guys put the block in the Rottler F69A yesterday and started to probe. Must say out of all the aftermarkett blocks we have had on the machine, the Summit block was the closest to GM print. Cylinder were only shifted .0015". To square deck the banks to spec it too .002" on one side and .003" on the other. Checking lifter bore location and cylinder wall thickness after boring and honing to 4.125". Main bore in the middle of factory spec.
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Interesting!
Is it affordable? or another block that is priced so close to a Dart that No one buys one unless that's all that's in stocK?
Needs to be priced like those speedmaster blocks but not cheap junk! is there a Billet Cap option? lifter size? and i'm assuming bores to 4.155
Tall deck would be sweet!
Is it affordable? or another block that is priced so close to a Dart that No one buys one unless that's all that's in stocK?
Needs to be priced like those speedmaster blocks but not cheap junk! is there a Billet Cap option? lifter size? and i'm assuming bores to 4.155
Tall deck would be sweet!
Seems I heard they were the same blocks Blueprint has made. Blueprint has very high standards, so these should be no exception.
Nice to see a good quality aftermarket block available. Ive read the Dart blocks have taken a shit quality wise lately.
Head bolt holes are blind tapped.
Nickel content is high as it machines like a high nickel content block
Checking lifter bores now
Will sonic test cylinders after honing
Nickel content is high as it machines like a high nickel content block
Checking lifter bores now
Will sonic test cylinders after honing
Lifter Bore locations
X axis off .004”
Y Axis off .001”
It's the best aftermarket block for lifter bores we have had on Rottler F69A.
X axis off .004”
Y Axis off .001”
It's the best aftermarket block for lifter bores we have had on Rottler F69A.
At what retail price? With Dart prices basically doubling since Covid/Biden/Conglomerate buy out, can we afford these new blocks?
How was the webbing compared to shp? Thanks for thread it’s tough to find accurate info on the bpe blocks
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