Not hard to see why... - ZR-1 Net Registry Forums

flyin ryan · 03-21-2008

i've driven a ZO6, only up to 171 MPH on a slight curve, i've had a crate LS7 on the floor of my shop but yesterday i finally had a chance to see what i've been waiting for. a customer dropped off a set of LS7 heads & intake for me to port. it's not hard to see why those things make decent jam. the exhaust port itself is not too far off some of the 15Â°/18Â° inline valve & splayed valve Super Stock/Competition Eliminator stuff i've done. i told the guy not to expect any big gains, that i would do what i could. i think the valve angle is around 12Â° stock. nice stuff.

03-21-2008

Ryan, the intakes only need to be touched up slightly. The exhaust side is where most of the work gets done on the LS7 heads. Send pics.

flyin ryan · 04-11-2008

i can't be too long or the auto log out hits. never had a chance to post any pics Jeff, customers grabbed them as soon as i was done. thought you guys might find this interesting. they dynoed it today. stock short block untouched except for a cam change, .242Â° INT. .247Â° EXH. @ .050", little more C/R 11.2:1, true full length headers, my porting & they dialed in the fuel mapping. pump gas. best TQ. was 585 @ 5500 RPM, H.P. was 660 @ 6800 & 6900 RPM. average power between 4000-7000 was 579, average TQ. betwwen the same range was 552. Superflow 902. pretty impressive for the minimal work. good piece of enginering IMO.

flyin ryan · 04-11-2008

as a side note: they also dynoed this thing before the heads came off. with the same full length headers as above it made 512 H.P.

Aurora40 · 04-12-2008

that's on an engine dyno?

flyin ryan · 04-12-2008

ya Bob, engine. Superflow 902. they have an in house chassis dyno they want to put the car on once it's all together.

03-21-2008	#1
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,741	Not hard to see why... i've driven a ZO6, only up to 171 MPH on a slight curve, i've had a crate LS7 on the floor of my shop but yesterday i finally had a chance to see what i've been waiting for. a customer dropped off a set of LS7 heads & intake for me to port. it's not hard to see why those things make decent jam. the exhaust port itself is not too far off some of the 15Â°/18Â° inline valve & splayed valve Super Stock/Competition Eliminator stuff i've done. i told the guy not to expect any big gains, that i would do what i could. i think the valve angle is around 12Â° stock. nice stuff. __________________ There are no limit's mans ingenuity, just as mans ingenuity will never conquer the forces & behavior of this planet...Smokey Y.

03-21-2008	#2
Jeffvette Guest Posts: n/a	Re: Not hard to see why... Ryan, the intakes only need to be touched up slightly. The exhaust side is where most of the work gets done on the LS7 heads. Send pics.

04-11-2008	#3
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,741	Re: Not hard to see why... i can't be too long or the auto log out hits. never had a chance to post any pics Jeff, customers grabbed them as soon as i was done. thought you guys might find this interesting. they dynoed it today. stock short block untouched except for a cam change, .242Â° INT. .247Â° EXH. @ .050", little more C/R 11.2:1, true full length headers, my porting & they dialed in the fuel mapping. pump gas. best TQ. was 585 @ 5500 RPM, H.P. was 660 @ 6800 & 6900 RPM. average power between 4000-7000 was 579, average TQ. betwwen the same range was 552. Superflow 902. pretty impressive for the minimal work. good piece of enginering IMO. __________________ There are no limit's mans ingenuity, just as mans ingenuity will never conquer the forces & behavior of this planet...Smokey Y.

04-11-2008	#4
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,741	Re: Not hard to see why... as a side note: they also dynoed this thing before the heads came off. with the same full length headers as above it made 512 H.P. __________________ There are no limit's mans ingenuity, just as mans ingenuity will never conquer the forces & behavior of this planet...Smokey Y.

04-12-2008	#5
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	Re: Not hard to see why... that's on an engine dyno? __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]

04-12-2008	#6
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,741	Re: Not hard to see why... ya Bob, engine. Superflow 902. they have an in house chassis dyno they want to put the car on once it's all together. __________________ There are no limit's mans ingenuity, just as mans ingenuity will never conquer the forces & behavior of this planet...Smokey Y.