van383

iTrader: (1)

planning on steeping up to 275 plus of gas.. my head excepts gasket or tappered seat plugs. been using the tr6 at .035 now on 150 shot at 10.5-11.1a/f. did not really want to go back to projected tip style plug so was looking at the 5671a-8 gasket seat maybe, but was curious if being the reach differance in the two would i see any issue at all on ignition firing? just curious what most have had luck with plug wise and gap and a/f target on the bigger shot set-up on this ls1.. 11.1cr running 110 stand alone and in motor.. thanks

ATVracr

iTrader: (5)

Thats a big jump... try creeping up on the 275 shot (200 then 250).
Anything in the 11's A/F is rich, in the 10's is really rich.
Lean out what you have in there now..... get the plugs and timing right before you jet it up. There is alot left in your 150 shot with the right tune up.

I'd start with a 7-8 heat range and 12.0-12.5 A/F ... as always read the plugs!
and I bet it picks up a good bit on the 150 shot.

van383

iTrader: (1)

not that easy got a victor style intake and got to pull tb everytime for pill change, but can be done. and wow on my old ez street cars with conv sbc stuff running a fast efi i always had luck with 11.1-11.2 a/f anything more would be lean imo.. is the ls based motor like the a/f that lean?

ATVracr

iTrader: (5)

I thought the same thing a few years back, then we got hooked up with Jeff Prock and he showed us we were wrong.

Drop the fuel pressure if you can.

Sent you a PM back with my number.