dmentzer

Does anyone have a copy of the TRW Performance Booklet that was put out in the late 60's/early 70's? I am looking for cam specs on the TP118 camshaft that was made for the small block Chevy. Thanks.

GOSFAST

That cam is a copy of the OEM grind for the 327 SB. The G.M. part number is 3849346. It's a 254/254 @ .050" x .485" gross lift and a 114L/S. Recommended install at 110 ICL. The lash is set at .030" int. (hot) and .030" exh (hot). For this reason it is sometimes referred to as the "Duntov" 30/30. Thanks, Gary in N.Y.

P.S. We still sell 1/2 dozen these every year. It's a fairly big seller in the "restoration" end of the business, it has that "old familiar" sound. In a "small" unit it would be considered a "higher" rpm "stick". Probably in the basic range of 3200/7000 rpm. Hope this helps you!

CharlieW

I worked for TRW in the late 60s and I have a catalog dated 1969 titled TRW Racing and High Performance Parts. It lists the following information for cam TP118:

Chevrolet 1955-69 265-283-302-307-327-350
Mechanical lifters Drag and Track
Valve lift I & E 0.455"
Duration I & E 314 degrees
Overlap 86 degrees
Lash I & E 0.030"

CharlieW

P.S.
As a point of interest I meant to list the prices for it also:

List price 35.09
Wholesale 26.32
Distributor 21.47
Confidential net price 16.84

Times have changed.

Charlie

sprint322

I have an old bbc roller cam part#s are TP228 and FA7637...Can anyone help with the specs please? Thanks!

Westlotorn

I guess I don't have much experience in this group. My TRW catalog is from 1989, a new book in this group but it does offer the specs on your TP228

Big Block GM
Roller Camshaft
Net Lift 652/650 Duration 259/272 Overlap 86 degrees
Lobe Centers 108/108 set lash at .028/.030 Hot Rocker ratio 1.7

sprint322

Awesome!!! Thank you sir!!!!

Westlotorn

That is a pretty wild camshaft.

sprint322

freshening a 427 chevy...alky...injected...vintage sprint car on pavement...cars name is Rodney Rat