Thread: 355 build help

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Originally Posted by 1gary

The early TPI's have the same 12 bolt patterns as the Dart heads have.

Them 1986 TPI Intakes You are Talking about are Very Rare . 1987 on are a different Bolt Pattern . Just a Heads up so you know what your up against .

As for Valve Springs yes they can be changed as needed . But no need to run over Kill on Valve Spring tension even on a Mild Roller Camshaft Build . Look at the Springs used on the Chevy Roller Engines . They are not that Heavy

Originally Posted by tango

Them 1986 TPI Intakes You are Talking about are Very Rare . 1987 on are a different Bolt Pattern . Just a Heads up so you know what your up against .

As for Valve Springs yes they can be changed as needed . But no need to run over Kill on Valve Spring tension even on a Mild Roller Camshaft Build . Look at the Springs used on the Chevy Roller Engines . They are not that Heavy

I tried his link and got a error code so I couldn't see which iron eagle part number he has.I looked at the Dart catalog and found a yr range of a standard intake that ran from 1955 to 1986 with two models having self aligning rockers.Then a year range from 1987 to 1995 that fit those intakes with center bolt valve covers and self aligning rockers.The yr range that he would have a problem would be from 1996 to 1999 that is a vortec intake.Without knowing I would guess he doesn't have either the very early models or the late models mainly because the second one is more common.

Because I am a stubborn old guy,I called Dart and confirmed the 1987 to 1995 heads will bolt on his intake without any mods.Even if he needed to mod the intake,it is a simple matter of oblonging the bolt holes.No big deal.