Hi guys,

I bought some milled LT4 AFR 220s for my 383 TT buildup, and I am having trouble getting my stock LT1 intake to fit. I posted a message on LT1 tech but all I got are the "use an LT4 intake" responses....

I was told the heads were milled down to 58cc (from 76cc) by AFR - so I am assuming I need to mill the intake down to match. The heads are already on the car because I was told the intake would bolt on without modification. I would like to avoid removing the heads from the car if at all possible.

Is there any formula to calculate the amount of milling required to the intake based on the 18cc per chamber reduction on the heads?

Thanks guys

 

First, get a LT4 intake. The Lt1 will not work.

Second, you need to know how much was taken off whne it was milled. Then you can figure out what to do to the intake.

Bret