Author Topic: 455 build  (Read 502 times)

red brew

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455 build
« on: January 01, 2023, 01:16:40 PM »
Ok guys.  I just scored a 455 block thats .060 over.  I have the time and $$$ to build a good street engine.  I have a turbo 350 with an 2.56 posi.  I would like over 580 torque or so.  I have on hand a performer manifold, Ram Air III exhaust manifold, A 50,000 volt HEI, Sean Murphy Q-jet, new front cover and water pump, new performance harmonic balancer.  Assorted odds and ends that I can find. I also have a Crower 60918 Hyd flat tappet camshaft and PRC stainless roller rockers.  Now the question?  474 or 495?  Flat tappet or hyd roller?   I see that Butler had stroker kits and so does Scat and Eagle.  Im open to suggestions and opinions to camshaft recommendations and so on.  I have built losts of SBC and BBC engines but this will be my first ground up build.  Block is going to the shop this week so I can install studs on the mains and get new cam bearings and other work done.  I will get it line honed and a true flat deck.  I want to use either Edelbrock or Kaufman heads and will have them set up for either camshaft.   I still need to work out the exhaust as far as mufflers.  I love the old Cyclone purple hornies but done know if i want to be that obnoxious but it hasnt stopped me before.  Thanks for your time guys and Happy New Years. I also bought Rocky Rotellas book and will use it as much as I can. 

nas t eh

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Re: 455 build
« Reply #1 on: January 01, 2023, 03:18:20 PM »
Is the block true/good at .060 over and ready for pistons or does it need clean up? There is a chance that it may have some core shift and some thin cylinder walls, might want to sonic check the block before anything else because even honing out to .065 may be too far. if the block has enough meat you can order custom pistons at .065 for reasonable prices.

While a roller cam/lifters will add a $1000 to the build, it will make much more power out of those Aluminum heads.

Only 3 brands of roller rockers are proving to be any good at long term survival. Do some checking around on this. Crower, Harland Sharp and Crane are good. All of the overseas rockers do not last.

1973 T/A 455, 4 speed.

red brew

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Re: 455 build
« Reply #2 on: January 03, 2023, 10:26:21 AM »
Ordered a set of Performer heads from Summit.   I got part #61595 which are 72cc and set up for a roller cam.  Summit has 16 units in stock so Im getting while the getting is good.  Also ordered an ARP main stud kit so when that comes in then its off to the shop for a line hone, cam bearings and other details.

Still up in the air about going 474 or 495.   And I am leaning on the Butler cam which is 230/236 which should be fairly tame on an engine that big.  Anyone on the forum using their cam?


glenn911

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Re: 455 build
« Reply #3 on: January 05, 2023, 10:22:11 AM »
455 and up street motors, most go with the 87cc e heads. 
'79 400 4 spd esprit
'78 455 WS6 auto
'74 461 4 spd T/A

Re: 455 build
« Reply #3 on: January 05, 2023, 10:22:11 AM »
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