Pump gas 421 SBC HP
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Re: Pump gas 421 SBC HP
Could we get some clarification on this cam?
Is it a hydraulic flat tappet with 270/275 advertised duration and .460" valve lift?
Is it a hydraulic flat tappet with 270/275 advertised duration and .460" valve lift?
- mt-engines
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Re: Pump gas 421 SBC HP
Calm down guys.. lol I don't live on here, I have a few more engines to finish up. I will port more details. Head flow, port sizing etc.
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Re: Pump gas 421 SBC HP
What i wanna know is the details about the caliper Mr MT is holding in his picture on the right side of his post's. L.O.L. Mark H.
Re: Pump gas 421 SBC HP
Anymore info MT?mt-engines wrote: ↑Mon Jun 07, 2021 12:13 pm Calm down guys.. lol I don't live on here, I have a few more engines to finish up. I will port more details. Head flow, port sizing etc.
- mt-engines
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Re: Pump gas 421 SBC HP
Sorry forgot. Had a few more engines this week at the dyno. Id like you guys to critique this engine to another I knew would make way more power. The other is a 406 SBC with oooold dart race series 220 heads.. I'll post a few links..
406. https://youtu.be/kDDjFmNheyQ
421. https://youtu.be/BPxLBBNGDbg
406. https://youtu.be/kDDjFmNheyQ
421. https://youtu.be/BPxLBBNGDbg
- mt-engines
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Re: Pump gas 421 SBC HP
What's even more interesting is if .460 valve lift is advertised on cam card, which rocker ratio is on the cam card and which one was actually used in the engine?
European Performance Engines & Cylinder Heads
www.therennlab.com
www.therennlab.com
- mt-engines
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Re: Pump gas 421 SBC HP
Rocker ratio 1.6I 1.5E Jesel shafts
Goal was 600hp.
AFR 190 heads 2.080 11/32 stainless valves
.100 69
.200 152
.300 215
.400 256
.500 276
.600 293
.700 299
.800 304
Nothing fancy. Just bowl blend and short turn work a little work at the pinch. Camshaft was a Ruben Racing Cams solid tappet.
Shelf DSS pistons 1/16 1/16 3/16
TOTAL SEAL file fit standard tension rings
Gapped .018"top .016"2nd
SCAT Pro series 6.000 I beam 7/16 bolts
CALLIES 3.875 stroke crank
MELLING M55
MOROSO oil pan trap door no kickout
GM 184 bowtie block
More power could be had with a bigger head or a lot more work. But I don't work for free...
Goal was 600hp.
AFR 190 heads 2.080 11/32 stainless valves
.100 69
.200 152
.300 215
.400 256
.500 276
.600 293
.700 299
.800 304
Nothing fancy. Just bowl blend and short turn work a little work at the pinch. Camshaft was a Ruben Racing Cams solid tappet.
Shelf DSS pistons 1/16 1/16 3/16
TOTAL SEAL file fit standard tension rings
Gapped .018"top .016"2nd
SCAT Pro series 6.000 I beam 7/16 bolts
CALLIES 3.875 stroke crank
MELLING M55
MOROSO oil pan trap door no kickout
GM 184 bowtie block
More power could be had with a bigger head or a lot more work. But I don't work for free...
Re: Pump gas 421 SBC HP
It looks like the heads would be flowing over 260 at the .460 lift, but is the .460 with the 1.5 or 1.6 rocker?
So much to do, so little time...
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Re: Pump gas 421 SBC HP
What is the part number on that camshaft?mt-engines wrote: ↑Wed Jun 16, 2021 6:48 pm Rocker ratio 1.6I 1.5E Jesel shafts
Goal was 600hp.
AFR 190 heads 2.080 11/32 stainless valves
.100 69
.200 152
.300 215
.400 256
.500 276
.600 293
.700 299
.800 304
Nothing fancy. Just bowl blend and short turn work a little work at the pinch. Camshaft was a Ruben Racing Cams solid tappet.
Shelf DSS pistons 1/16 1/16 3/16
TOTAL SEAL file fit standard tension rings
Gapped .018"top .016"2nd
SCAT Pro series 6.000 I beam 7/16 bolts
CALLIES 3.875 stroke crank
MELLING M55
MOROSO oil pan trap door no kickout
GM 184 bowtie block
More power could be had with a bigger head or a lot more work. But I don't work for free...
Craig.
- mt-engines
- Expert
- Posts: 874
- Joined: Fri Sep 27, 2019 12:35 pm
- Location: MN
Re: Pump gas 421 SBC HP
CG264-4x7-110+4cjperformance wrote: ↑Mon Jun 28, 2021 8:16 amWhat is the part number on that camshaft?mt-engines wrote: ↑Wed Jun 16, 2021 6:48 pm Rocker ratio 1.6I 1.5E Jesel shafts
Goal was 600hp.
AFR 190 heads 2.080 11/32 stainless valves
.100 69
.200 152
.300 215
.400 256
.500 276
.600 293
.700 299
.800 304
Nothing fancy. Just bowl blend and short turn work a little work at the pinch. Camshaft was a Ruben Racing Cams solid tappet.
Shelf DSS pistons 1/16 1/16 3/16
TOTAL SEAL file fit standard tension rings
Gapped .018"top .016"2nd
SCAT Pro series 6.000 I beam 7/16 bolts
CALLIES 3.875 stroke crank
MELLING M55
MOROSO oil pan trap door no kickout
GM 184 bowtie block
More power could be had with a bigger head or a lot more work. But I don't work for free...
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- Guru
- Posts: 3661
- Joined: Tue Aug 19, 2008 7:20 am
- Location: South Australia
Re: Pump gas 421 SBC HP
Im interested to see the full spec on that cam, a quick google showed nothing. Do you have a pic of cam card or a link. Thanksmt-engines wrote: ↑Mon Jun 28, 2021 8:11 pmCG264-4x7-110+4cjperformance wrote: ↑Mon Jun 28, 2021 8:16 amWhat is the part number on that camshaft?mt-engines wrote: ↑Wed Jun 16, 2021 6:48 pm Rocker ratio 1.6I 1.5E Jesel shafts
Goal was 600hp.
AFR 190 heads 2.080 11/32 stainless valves
.100 69
.200 152
.300 215
.400 256
.500 276
.600 293
.700 299
.800 304
Nothing fancy. Just bowl blend and short turn work a little work at the pinch. Camshaft was a Ruben Racing Cams solid tappet.
Shelf DSS pistons 1/16 1/16 3/16
TOTAL SEAL file fit standard tension rings
Gapped .018"top .016"2nd
SCAT Pro series 6.000 I beam 7/16 bolts
CALLIES 3.875 stroke crank
MELLING M55
MOROSO oil pan trap door no kickout
GM 184 bowtie block
More power could be had with a bigger head or a lot more work. But I don't work for free...
Craig.