atk 357 short block and summit build
#1
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Join Date: Jul 2012
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Car: 1985 firebird
Engine: 350 .40 over
Transmission: 5 speed borg(NWC), ram clutch
Axle/Gears: ROTATING MERCURY DRIVE.
atk 357 short block and summit build
So I just got together atk short block it seemed well done for the price. I put a set of summit big valve heads on it with a summit cam and lifter set
Cam Style:
Hydraulic flat tappet
Basic Operating RPM Range:
1,500-5,000
Intake Duration at 050 inch Lift:
218
Exhaust Duration at 050 inch Lift:
218
Duration at 050 inch Lift:
218 int./218 exh.
Advertised Intake Duration:
284
Advertised Exhaust Duration:
284
Advertised Duration:
284 int./284 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.458 in.
xhaust Valve Lift with Factory Rocker Arm Ratio:
0.458 in.
Valve Lift with Factory Rocker Arm Ratio:
0.458 int./0.458 exh.
with pro form push rods and 1.5 rockers summit brand... lol I wanted to see how summits parts would work all together. and topped it off with a performer intake and mid 70s 750 Rochester timing is at 11 right now but I will be curving the dist this week and dyno tune and all poly mounts.. hedman headers and y pip..( the paint quality is horrible so horrible it started on fire and burned all of on break in, never buying again!!!!!) with a mufflex 3.5 cat back 6000 series spintech muffler....
so far I have about 500 on this set up. very happy with it other than the flaming header situation. I am running no state controlled smog ****
it sounds great and performs very well.
Cam Style:
Hydraulic flat tappet
Basic Operating RPM Range:
1,500-5,000
Intake Duration at 050 inch Lift:
218
Exhaust Duration at 050 inch Lift:
218
Duration at 050 inch Lift:
218 int./218 exh.
Advertised Intake Duration:
284
Advertised Exhaust Duration:
284
Advertised Duration:
284 int./284 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.458 in.
xhaust Valve Lift with Factory Rocker Arm Ratio:
0.458 in.
Valve Lift with Factory Rocker Arm Ratio:
0.458 int./0.458 exh.
with pro form push rods and 1.5 rockers summit brand... lol I wanted to see how summits parts would work all together. and topped it off with a performer intake and mid 70s 750 Rochester timing is at 11 right now but I will be curving the dist this week and dyno tune and all poly mounts.. hedman headers and y pip..( the paint quality is horrible so horrible it started on fire and burned all of on break in, never buying again!!!!!) with a mufflex 3.5 cat back 6000 series spintech muffler....
so far I have about 500 on this set up. very happy with it other than the flaming header situation. I am running no state controlled smog ****
it sounds great and performs very well.
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Join Date: Jun 2011
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Car: 71' Chevelle
Engine: 496ci 675HP Streetable!
Transmission: TH400 3500 Stall 9.5" Converter
Axle/Gears: 3.73
Re: atk 357 short block and summit build
Glad to hear you had great success with our ATK Short Block. We try our best to offer the best product we can. Do you have any pictures?
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