[darbikrash]

Originally Posted by tom s

John,your thought on iron headed 10.25 engine on E 85?Do you think it can handle any boost on a street driver?Tom

I think an iron head with 10.25 CR with E-85 would be fine if boost is kept under 10 psi or so.

We’ll know more when we get to the dyno and see firsthand what the IAT numbers look like.

This design has a double pass through intercooler design which should keep IAT’s substantially lower than other designs. Lower IAT’s means less chance for detonation, and the full sequential port EFI means tight engine management.

[KS circutguy]

Wondering how you run a alternator-AC compressor"
Separate pulley?

[darbikrash]

Originally Posted by KS circutguy

Wondering how you run a alternator-AC compressor"
Separate pulley?

Yes, separate 6 rib serpentine for accessories. The blower drive pulley is a dedicated 8 rib serpentine that has its own HD automatic belt tensioner. This allows you to change blower pulleys (and boost) without disturbing the accessories.

This also keeps the blower belt as sort as possible which helps eliminate slip.

I’ll post pics of the accessory drive as it progresses, but it will accommodate alternator, power steering, and optionally AC.

[ID67goat]

Originally Posted by darbikrash

Yes, separate 6 rib serpentine for accessories. The blower drive pulley is a dedicated 8 rib serpentine that has its own HD automatic belt tensioner. This allows you to change blower pulleys (and boost) without disturbing the accessories.

This also keeps the blower belt as sort as possible which helps eliminate slip.

I’ll post pics of the accessory drive as it progresses, but it will accommodate alternator, power steering, and optionally AC.

Do you know about how far your accessory and blower drive assemblies will stick out from the front face of the engine? Early GTO’s are a little limited on space between the radiator and engine….

Also anyone know how reliable electric water pumps are on a street driven vehicle?

Thanks, and beautiful work!

[darbikrash]

Originally Posted by ID67goat

Do you know about how far your accessory and blower drive assemblies will stick out from the front face of the engine? Early GTO’s are a little limited on space between the radiator and engine….

Also anyone know how reliable electric water pumps are on a street driven vehicle?

Thanks, and beautiful work!

The motor pictured elsewhere in this thread is going into my '65 GTO after the dyno pulls. I was able to measure all the clearances as my '65 has the same electric water pump and twin Spal electric fans.

The accessory pulley measures about 2.5" away from the back of the Spal fans- so plenty of clearance.

I've had the electric water pump in my '65 for about 6 years with no issues, they are rated for 3000 hours.