Choice of heads

[ArnieVXR]

For my LS2 stroker: 416cu fully forged normally aspirated motor

Choices:
1. Stick with the stock heads plus existing FAST 102 (the free option)
2. GM CNC LS2 heads plus existing FAST 102
3. Stock LS3 heads plus a new FAST intake

Or maybe something else? Without going mad that is.

Option 3 would free up LS2 heads for my LS1 and the LS1 heads and FAST intake for ebay...

[gsd2000]

Ls3 heads and a ported ls3 intake

[stevieturbo]

Buy the best ported heads you can afford to go with the existing intake.

[ringram]

Tfs as cast 220cc on a budget with the existing fast.

Dump the ls1 heads for sure.

Forget fast ls3 intake, stock is fine.

Personally I'd run gm cnc ls3 heads and oem intake.
Cam maybe 230/238.
I recon that would be a good bhp/£ setup

[KMud]

If the LS3 option were available to me I'd take it. That said, don't trust me, I want your FAST

[mailer555]

has any of you seen the Edelbrock pro flo intake? it requires a bonnet cowl, but looks as angry as feck!! suppose to get good power along with a cam. I'm having a good look at this my self, if I can find a bonnet cowl!

[MyM8V8]

A pair of AFR 225 cathedrals would suit that really well. I might know someone with a pair.

[ringram]

mailer555 said:

has any of you seen the Edelbrock pro flo intake? it requires a bonnet cowl, but looks as angry as feck!! suppose to get good power along with a cam. I'm having a good look at this my self, if I can find a bonnet cowl!

Forget it carb intakes will take the NA power stakes out. But you need a cable throttle to run the 4500 TB's

Otherwise fast composites wipe the floor with the rest. Including according to Katech the Harrop ITB!
(Comparitive dyno's on corvette forums)

[mailer555]

ringram said:

mailer555 said:

has any of you seen the Edelbrock pro flo intake? it requires a bonnet cowl, but looks as angry as feck!! suppose to get good power along with a cam. I'm having a good look at this my self, if I can find a bonnet cowl!

Forget it carb intakes will take the NA power stakes out. But you need a cable throttle to run the 4500 TB's

Otherwise fast composites wipe the floor with the rest. Including according to Katech the Harrop ITB!
(Comparitive dyno's on corvette forums)

The pro flo is designed to use the standard TB though? Looking through the forums it's a straight forward bolt on like the Fast intakes but just crazy tall, it measures just over 10" from top to bottom. It's not a carb intake like the Vic jr.

[mailer555]

ringram said:

mailer555 said:

has any of you seen the Edelbrock pro flo intake? it requires a bonnet cowl, but looks as angry as feck!! suppose to get good power along with a cam. I'm having a good look at this my self, if I can find a bonnet cowl!

Forget it carb intakes will take the NA power stakes out. But you need a cable throttle to run the 4500 TB's

Otherwise fast composites wipe the floor with the rest. Including according to Katech the Harrop ITB!
(Comparitive dyno's on corvette forums)

The pro flo is designed to use the standard TB though? Looking through the forums it's a straight forward bolt on like the Fast intakes but just crazy tall, it measures just over 10" from top to bottom. It's not a carb intake like the Vic jr.

[ringram]

Yeah so its no good, the fast is better.
Unless you have some empirical evidence to the contrary?

http://ls1tech.com/forums/13097648-post24.html

The manifold cant even match stock until 5600rpm so zero point.

[mikeyb1987]

gsd2000 said:

Ls3 heads and a ported ls3 intake

I would have to second this, based on my decision to go down this route.

[ArnieVXR]

For the record, I had a FAST102 on my Audi and it was good for 20psi. I've now had fitted a Holley Hi-rise which is good for quite a bit more

I like the sound of your heads Gareth, but I'm guessing they're worth good money?

I'm licking my wounds after buying a set of ported Dart Big Chief 18* heads with titanium everything and Jesel rockers. Should fit my 706cu engine nicely and be good for the methanol twin turbo motor I'm hoping to build

While I can't afford much on this engine, I'm guessing stock LS2 heads will just strangle it. The LS3 heads look good, as they're just over £800 for a set.

[MyM8V8]

ArnieVXR said:

. The LS3 heads look good, as they're just over £800 for a set.

But not with a cathedral port fast. (sell the LS2s for £500)

Edited by MyM8V8 on Tuesday 29th July 23:29

[Gelf VXR]

I have milled stock L92 heads installed, I'm going for a pair of landspeed stage 1 ls3 heads, hollow intake valves, 5 angle valve job, 2 cc bowl porting on the intake, radius valve and full porting on the exhaust, mines only 364ci, they do stage 2 and 3 for strokers, only problem is the websites down, so I can't order. Using a Rick Crawford modified LS3 intake, not ported.


FTI cam is finally on the way after 8 weeks waiting for the correct blank.

Edited by Gelf VXR on Thursday 31st July 06:05