Dyno Hp may be low

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Oct 6, 2013 | 08:55 PM

hermancar

Thread Starter

Instructor

Joined: Dec 2008

Posts: 127

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From: Grand Rapids Mi.

Dyno Hp may be low

I had my 1999 c5 corvette dynoed and my best was 353.61/347.63
My car has.
1. Comp Cam XR265hr high lift
2.Z06 intake (no porting)
3.Z06 28 injectors
4.comp cam push rods
5.z06 filter housing with wide opening(stock)
6.ls2 cam chain
7. sx power Lt headers,cats,X-pipe and z06 mufflers
8.z06 heads ( completely stock except comp cam 915 springs)
9.LS7 lifters
10. 3:15 gear
11. A4 automatic (stock) and stock converter.
12 stock ls1 MAF
Is that about all this combination will achieve. I am adding copy of my
dyno sheet. Thanks in advance for any oppinions or suggestions.

Oct 6, 2013 | 09:54 PM

warren s

Melting Slicks

Joined: Mar 2002

Posts: 2,203

Likes: 63

From: Staten Island NY

Seems a bit low to me, those injectors may be a bit small....and the bone stock LS6 heads may need some port work. Having an automatic is also going to take some additional power before it hits the rollers.

I have a Texas Speed 228R cam and needed 36lb injectors, the 28s were at over 95% duty cycle pretty quick.

Oct 6, 2013 | 11:45 PM

SBCGENII

Melting Slicks

Joined: Mar 2005

Posts: 2,225

Likes: 42

From: Okinawa

Thats cam is about the same size as a ls6 cam. So you should expect similar numbers as a zo6 with exhaust and a tune, but you have an automatic transmission and it won't dyno as good.

Oct 7, 2013 | 07:28 PM

PRE-Z06

Race Director

Joined: Dec 2006

Posts: 12,391

Likes: 2,910

From: Fort Worth, Texas

I agree the cam is tiny, here is a customers results that brought it to us with that cam...very similar set-up as yours except heads were ported
http://forums.corvetteforum.com/perf...d-headers.html