barthautala

Exhaust Manifold - no problem bolting this stock exhaust manifold up to the new 243 heads?

barthautala

Anyone else who has done this swap please comment - what about bolting the accessory brackets up? Will this be a problem?

nonnieselman

iTrader: (10)

Everything will fit no problem..

IF you plan on boost, you should check out the Isky Triple 12. makes good low end and comes alive with boost.

dmelvin

iTrader: (8)

I've done the 243 head swap. Changed lifters and trays, went with hardened push rods since I changed cam. Milled .030 and used a .040 head gasket to give me 9.9:1 compression. Everything bolts back up fine. If you use the stock .051 thickness gasket, you'll see the stock 9.5:1 compression or extremely close to it.

I also went ARP bolts. You can go with stock replacements, I just find it a pain in the *** to torque them + so many degrees. 3 passes with ARPs in increasing increments of torque up to 80ft/lbs, and done.

BigV8

I'm also looking at head choices. Did you have to do a tune with 9.9:1 compression, and what lifters and push rods did you use. Thanks