Headers for Gen-F2 keeping factory Catback

[gmoulds]

Guys,

Anyone know of a brand of 1 7/8" 4-1 Headers and Cats which will fit up to a factory Catback
also if VCM make an OTR for the LSA yet?

Thanks

 

[PeteSS]

I know someone that got a Harrop upgrade on his LSA which included 4-1 headers and cats. Assuming it was a straight bolt on as he still has the standard cat back


https://www.harrop.com.au/shop/automotive-performance/exhaust/headers-commodore-ve-vfii

 

[duaned]

I know someone that got a Harrop upgrade on his LSA which included 4-1 headers and cats. Assuming it was a straight bolt on as he still has the standard cat back


https://www.harrop.com.au/shop/automotive-performance/exhaust/headers-commodore-ve-vfii

His would have to be cut to fit.O.P., have you looked at the Sureflo short 4 into 1 headers and cats? They may just line up.

 

[bigjim92]

Guys,

Anyone know of a brand of 1 7/8" 4-1 Headers and Cats which will fit up to a factory Catback
also if VCM make an OTR for the LSA yet?

Thanks

The harrop headers and cats (made by HM) will bolt upto the standard catback. I know a few guys doing this.
As far as intakes go, Harrop do an open pod filter, VCM do an enclosed pod filter which looks factory. They don't do an OTR. I believe Duspeed make an OTR for the LSA.
That being said, troll the HSV forums, the open pod set up from Harrop seems to be the way to go if you're chasing every kW.

 

[gmoulds]

The harrop headers and cats (made by HM) will bolt upto the standard catback. I know a few guys doing this.
As far as intakes go, Harrop do an open pod filter, VCM do an enclosed pod filter which looks factory. They don't do an OTR. I believe Duspeed make an OTR for the LSA.
That being said, troll the HSV forums, the open pod set up from Harrop seems to be the way to go if you're chasing every kW.

Thanks for the input, I'll look at the HM headers, curious on peoples thoughts on 1 3/4 vs 1 7/8 primaries, chasing low to mid torque.
I would like a OTR as I prefer the appearance, Are Duspeed were as good as VCM ?

 

[daves8]

The sureflo short 4-1 and cats will finish in standard position. They will possibly need a different flange welded onto them to fit a standard system.

I have, and am still considering these mated to my stock system.

 

[VESSVUTE]

The sureflo short 4-1 and cats will finish in standard position. They will possibly need a different flange welded onto them to fit a standard system.

I have, and am still considering these mated to my stock system.

I have the sureflo headers. If i didnt have fitment issues i would highly recommend them.....

 

[bigjim92]

Thanks for the input, I'll look at the HM headers, curious on peoples thoughts on 1 3/4 vs 1 7/8 primaries, chasing low to mid torque.
I would like a OTR as I prefer the appearance, Are Duspeed were as good as VCM ?

Being a blown car go the 1 7/8" headers, you won't miss out on power anywhere. Blown vs NA are two different stories.
A lot of people like duspeed, and they're a decent intake. Personally I wouldn't use one. But each to their own.