Pump gas A460 head 572” HP guess

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Pump gas A460 head 572” HP guess

Post  tfsbbf466 on February 11th 2018, 11:38 am

I’m going to be dynoing this motor in the next few weeks and wondering what it should make. Here is the build list

A460 block
Scat forged crank 4.50
Scat 6.80 rods
Venolia pistons 11:1
FMS A460 heads ported 2.30” intake
FMS A460 intake
Pro systems 1200cfm
Custom solid roller 277/292 .800-.773 108ls
2 1/8 headers to 4” collector
No vacuum pump at this time

Motor will be going into a full size all steel stock suspension truck 4000lbs with a c6. Will also see a good amount of nitrous from an IS Real Street plate. Hoping it’s a bit faster then my cast crank TFS street headed 512 that blew apart last year lol


Last edited by tfsbbf466 on March 3rd 2018, 9:29 am; edited 1 time in total

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Re: Pump gas A460 head 572” HP guess

Post  dfree383 on February 11th 2018, 1:29 pm

900-950
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Re: Pump gas A460 head 572” HP guess

Post  wayney on February 11th 2018, 6:57 pm

I will be very interested in what it makes as I am working on a 562 build 11:1 18 bolt TFS A460 head 2.350 intake valve build.

how much port work was done ? how do they flow?

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Re: Pump gas A460 head 572” HP guess

Post  tfsbbf466 on February 11th 2018, 8:55 pm

They were ported years ago then touched up recently. Flowed around 410 at .800 on his bench. I never did get the flow sheet.

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Re: Pump gas A460 head 572” HP guess

Post  tfsbbf466 on February 27th 2018, 11:15 am

Should have the results later today. Motor is currently on the dyno. Need to find some longer plug wires as the ones I made for my old heads and short MT valve covers don’t fit. Hopefully she does ok

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Re: Pump gas A460 head 572” HP guess

Post  windsor on February 27th 2018, 11:55 am

In for updates!
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Re: Pump gas A460 head 572” HP guess

Post  tfsbbf466 on February 27th 2018, 5:21 pm

Well no surprise I didn’t make any noise today. Got there and one head was spitting water out of a pin hole where the oil drain back is. Said if it was a race only deal they had marine epoxy that would work. But being a street/strip motor they are going to yank it and weld it up. He is going to leave it bolted on the dyno so it will be ready to run once fixed. Hoping by the end of the week.

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Re: Pump gas A460 head 572” HP guess

Post  J.Toney on March 6th 2018, 12:16 am

Joe, this is for your dentside I assume? Still keeping it under a stock hood?
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Re: Pump gas A460 head 572” HP guess

Post  windsor on March 13th 2018, 9:42 am

Bump for updates!
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Re: Pump gas A460 head 572” HP guess

Post  tfsbbf466 on March 13th 2018, 11:08 am

Yes I’m still keeping a stock hood though I would like to find a fiberglass stock height hood that still uses the hinges to lighten the truck up some.

The shop is still struggling with the tiny water leak near the oil drain hole. They tried welding it but it began to leak in another spot next to the weld. They said Dart reccommended a special epoxy that I’m hoping they did yesterday and possibly have it ready to go this week. I’m getting impatient as this build has been on going since last May.

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Re: Pump gas A460 head 572” HP guess

Post  windsor on March 13th 2018, 1:49 pm

Interesting. Hope it works out for this weekend! Keep us posted, bud.
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Re: Pump gas A460 head 572” HP guess

Post  tfsbbf466 on March 15th 2018, 11:22 pm

Well I finally heard my build come to life tonight. Had some issues but did make a few pulls. Best being 851hp at 6600 with 30*. Lost power going up to 32 or down to 28. No afr because they couldn’t find the wire for the o2 hook up. And they had 112 in the cell so hopefully some hp in jetting and 93. I’ll get my shot again since they installed low tension oil rings and it’s smoking a bit on decel. So they are going to pull it apart, install standard oil rings, fix a small oil leak, put 93 in the cell, order the cable or the o2 and hopefully rerun it Monday.

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Re: Pump gas A460 head 572” HP guess

Post  windsor on March 16th 2018, 7:43 am

Interesting. You’re definitely in for making more power.

Keep us updated.
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Re: Pump gas A460 head 572” HP guess

Post  tfsbbf466 on March 16th 2018, 7:53 am

The shop also said the dyno was known to be stingy so not sure what that means exactly. But it could be reading a tad shy.

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Re: Pump gas A460 head 572” HP guess

Post  wayney on April 6th 2018, 9:17 pm

did you ever get to rerun it?

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Re: Pump gas A460 head 572” HP guess

Post  Colt Macara on April 6th 2018, 10:36 pm

NOSEY.....Smile
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Re: Pump gas A460 head 572” HP guess

Post  STR-LGL-70 on May 22nd 2018, 6:48 pm

Any updates?
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Re: Pump gas A460 head 572” HP guess

Post  rmcomprandy on May 23rd 2018, 12:12 am

STR-LGL-70 wrote:Any  updates?

I, for one, certainly don't envision 50+ horsepower in going to using 93 pump gas and higher tension oil rings ...

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