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Old 09-04-2010, 06:05 PM   #1
ptroxx
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Hit the Dyno today on my stock ZZ4

Well its official.... 249hp.. 252 ft lbs torq... right about where I Was think It has a little miss in it.. I think with new plugs and wires and the cam package and a little porting I Could hit 300...Looks like I have a new goal to hit... Ill be working a little extra OT to try and get the extra money for the new mods..
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ZZ4 249hp252 tq.Sanderson Header 2.5 Dual Exhaust,mini starter,rebuilt th350 B&M shift kit Rebuilt front end-Lowered 3 in.rear lowered on 8 in bolts.New 4 core rad ,energy poly motor/trans mounts, Edelbrock water pump, Rebuilt TAs,Drive-shaft shaft,strut,& rear end. New solid u-joint
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Old 09-04-2010, 06:19 PM   #2
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you got some horses hiding somewhere. Auto or stick?
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Old 09-04-2010, 07:35 PM   #3
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Did you change to some long tube headers.
I would be very very interested in the results of a Lt4 hot cam swap.
If you are going to go with the hot cam all youneed is the cam and roller rockers the zz4 already comes with the right springs.
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White 1971
ZZ4 short block with AFR 180 eliminators,lt 4 hot cam with 1.6 roler rockers
Autogear M22w Rockcrusher Center force setup Hooker 1 5/8competition headers
True duals with Magna flows
Dewitts Al. rad. and dual eletric fans
vbandp suspension kit and alot more
Old 09-04-2010, 07:57 PM   #4
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Quote:
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you got some horses hiding somewhere. Auto or stick?
Auto.... I may try and do the elec fans the same time i do the cam... while its apart anyway... this won be til after the new year..
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Old 09-04-2010, 08:02 PM   #5
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Quote:
Originally Posted by ZZ71s View Post
Did you change to some long tube headers.
I would be very very interested in the results of a Lt4 hot cam swap.
If you are going to go with the hot cam all youneed is the cam and roller rockers the zz4 already comes with the right springs.
No I have the sanderson shortys..the car is so low in the front i worry about long tubes hitting .....

Ill be getting the cam package with everything.. I want all new in there..

Like I said I was looking for like 275-300 maybe.. so the 250 isnt to far off.. so its getting there,,
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Old 09-04-2010, 08:21 PM   #6
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Arrow

Also the 395 hp number was produced using a Edlebrock performer rpm intake and a mech secondary carb according to the old Sally chevy sight.
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White 1971
ZZ4 short block with AFR 180 eliminators,lt 4 hot cam with 1.6 roler rockers
Autogear M22w Rockcrusher Center force setup Hooker 1 5/8competition headers
True duals with Magna flows
Dewitts Al. rad. and dual eletric fans
vbandp suspension kit and alot more
Old 09-04-2010, 08:39 PM   #7
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Also the 395 hp number was produced using a Edlebrock performer rpm intake and a mech secondary carb according to the old Sally chevy sight.
Was thinking about a new intake too.. guess id need the drop base for the air cleaner with a different intake too..
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Old 09-04-2010, 11:04 PM   #8
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One more cookie for the jar...not all dyno measurements are the same. I think you got missing hp somewhere too.
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BRING ON THE SUN!!

72, pc'd frame, mild sbc, tremec 5, 355 gears, vbp susp., in the bodyshop.

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Old 09-05-2010, 12:40 AM   #9
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Thats on a rear wheel dyno right?
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Old 09-05-2010, 08:25 AM   #10
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Nice looking car and ready to unleash the hidden HP
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Old 09-05-2010, 08:51 AM   #11
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Quote:
Originally Posted by blueray72 View Post
One more cookie for the jar...not all dyno measurements are the same. I think you got missing hp somewhere too.
Yeah Tom I was thinking the same thing... But not much.. its 360 rated and like said thats with the rpm intake..
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ZZ4 249hp252 tq.Sanderson Header 2.5 Dual Exhaust,mini starter,rebuilt th350 B&M shift kit Rebuilt front end-Lowered 3 in.rear lowered on 8 in bolts.New 4 core rad ,energy poly motor/trans mounts, Edelbrock water pump, Rebuilt TAs,Drive-shaft shaft,strut,& rear end. New solid u-joint
Old 09-05-2010, 09:20 AM   #12
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Yeah that rear wheel

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Thats on a rear wheel dyno right?
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Winner 2011 Best Shark Corvette Spectacular 2011
ZZ4 249hp252 tq.Sanderson Header 2.5 Dual Exhaust,mini starter,rebuilt th350 B&M shift kit Rebuilt front end-Lowered 3 in.rear lowered on 8 in bolts.New 4 core rad ,energy poly motor/trans mounts, Edelbrock water pump, Rebuilt TAs,Drive-shaft shaft,strut,& rear end. New solid u-joint
Old 09-05-2010, 09:22 AM   #13
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Nice looking car and ready to unleash the hidden HP
Thanks man. Its still a work in progress...The never ending money pit..LOL

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Winner 2011 Best Shark Corvette Spectacular 2011
ZZ4 249hp252 tq.Sanderson Header 2.5 Dual Exhaust,mini starter,rebuilt th350 B&M shift kit Rebuilt front end-Lowered 3 in.rear lowered on 8 in bolts.New 4 core rad ,energy poly motor/trans mounts, Edelbrock water pump, Rebuilt TAs,Drive-shaft shaft,strut,& rear end. New solid u-joint
Old 09-05-2010, 10:01 AM   #14
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Not too bad. When I dynoed my 71 with the ZZ4 it made like 200 hp and 350 tq.
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Its fast cause I threw lots a dollaz at it!!
"I set my standards low so I am never disappointed."
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Old 09-05-2010, 06:05 PM   #15
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Quote:
Originally Posted by ZZ71s View Post
Also the 395 hp number was produced using a Edlebrock performer rpm intake and a mech secondary carb according to the old Sally chevy sight.
If I was to go to a different manifold which airgap should I go with.. ? ? stock hood. ? ? and going to install the hot cam. ? ?

Also going to do a msd dist too...? ???
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Winner 2011 Best Shark Corvette Spectacular 2011
ZZ4 249hp252 tq.Sanderson Header 2.5 Dual Exhaust,mini starter,rebuilt th350 B&M shift kit Rebuilt front end-Lowered 3 in.rear lowered on 8 in bolts.New 4 core rad ,energy poly motor/trans mounts, Edelbrock water pump, Rebuilt TAs,Drive-shaft shaft,strut,& rear end. New solid u-joint
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