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I wanted to take a second to put out some positive feedback on some inexpensive aluminum cylinder heads I purchased for my 347 build.
I picked up a set of Skip White NKB 185cc heads fully assembled with Hyd Roller springs for $650. They used to be a ProComp dealer but have replaced that line with these NKB's. They say they assemble them with their own hardware to eliminate the problems people had the ProComps coming apart.
I was skeptical at first but for the price I couldn't pass them up. My engine was to be a budget build and I was shooting for 375 to 400 crank hp. Their flow numbers are right between the TFS 170 and the AFR 185's.
Well - to my surprise my motor dyno'd 430hp/447ft lbs tq yesterday. I was very impressed and so was they dyno shop. We could have tuned some more peak power but since I was shooting for 400 max I didn't spend the money for a main girdle and didn't want to risk the block failing on the dyno. The 430/447run had an A/F Ratio of 9.4 so it still has a lot more in it.
The moral of this story is...not all budget heads are crap. I got near AFR performance for 1/3rd the price.
BTW - This is a fairly mild motor for my daily. All budget minded stuff
10.2:1 compression (speed pro cast hyper pistons)
Scat 9000 cast crank
Scat H Beam rods
Comp custom roller cam
224/230 duration @.050
.536/.544 lift
110 lobe sep
650 vacuum secondary BG Demon carb
I picked up a set of Skip White NKB 185cc heads fully assembled with Hyd Roller springs for $650. They used to be a ProComp dealer but have replaced that line with these NKB's. They say they assemble them with their own hardware to eliminate the problems people had the ProComps coming apart.
I was skeptical at first but for the price I couldn't pass them up. My engine was to be a budget build and I was shooting for 375 to 400 crank hp. Their flow numbers are right between the TFS 170 and the AFR 185's.
Well - to my surprise my motor dyno'd 430hp/447ft lbs tq yesterday. I was very impressed and so was they dyno shop. We could have tuned some more peak power but since I was shooting for 400 max I didn't spend the money for a main girdle and didn't want to risk the block failing on the dyno. The 430/447run had an A/F Ratio of 9.4 so it still has a lot more in it.
The moral of this story is...not all budget heads are crap. I got near AFR performance for 1/3rd the price.
BTW - This is a fairly mild motor for my daily. All budget minded stuff
10.2:1 compression (speed pro cast hyper pistons)
Scat 9000 cast crank
Scat H Beam rods
Comp custom roller cam
224/230 duration @.050
.536/.544 lift
110 lobe sep
650 vacuum secondary BG Demon carb
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