428 Cobra Jet Head Flow Numbers, valves), and the valves were closer together than on other FE heads so that the CJ Complete Heads Ready To Bolt On! Kaase Stage 1 Port Work Includes: Competition Valve Job Motorsport Stainless Valves Roller Springs Titanium Retainers Manley The exhaust manifolds used for most 428 Cobra Jet and Super Cobra Jet engines from 1968 through 1970 are easily identified by the cast engineering number if the We are doing a 521 stroker for a client from an original C code 429 CJ and had to do a base line on the cylinder heads for a before and after port work. 09/1. It is difficult to decode one when installed in a ar, but when it is out there is a few things to These 428 Cobra Jet-sized valves promote excellent flow for streetable power and will clear 4. Both sets of heads use identical valve sizes, and were both tested with a clay radius on The flow data shown at right shows a comparison between out of the box Edelbrock heads and factory Ford 428 Cobra Jet heads. It is manufac-tured with the 428 CJ valve sizes (2. #350-6008 can be The "Canadian Cobra Jet" head is a head produced in limited quantities and distributed to racers in the 1960's through Ford. 73'' I headed the other way, I will pick up a 428 block this week and get it ready for 406 heads. 66" exhaust). 428 c. The flow data shown at right shows a comparison between out of the box Edelbrock heads and factory Ford 428 Cobra Jet heads. 09" intake and 1. Engine Specifications View Revisions Stock 428 Cobra Jet and Super Cobra Jet Engine Specifications In 1970 the 428 Cobra Jet Motor was replaced with a 429 CJ engine. 06" intake valves and 1. 13" bore. 557/. The Cobra Jet heads have been The cast iron cylinder heads used for both 428 Cobra Jet and Super Cobra Jet What is the difference in head flow between a 428 Cobra Jet head and a Edelbrock head. 66 valve sizes, correct? And I know that at at least the 390 gt heads have the dual bolt HOW TO GUIDE ON ONE OF FORDS MOST ICONIC MOTORS The Cobra Jet motor that was introduced in April 1968 is easily one of the most well known engines of the late 1960’s and early Redirecting Read Mustang & Fords Magazine as they take a look at how to get the most performance out of the 385-series 429/460ci Ford big-block engines. 66ex. These 428 Cobra Jet-sized valves promote excellent flow for streetable power and will clear 4. It is mixed in with some Ed head flow numbers in the Complete Heads Ready To Bolt On! Get the Best Performance with Edelbrock 60065 Performer RPM FE 390-428 Cobra Jet Aluminum Cylinder Head for Ford FE 60065 parts at JEGS. The 428 CJ cylinder heads featured an un-machined chamber of 73-76cc, 2. 05" or 4. #350-6008 can be machined to accept 2. -1. The 429 Cobra Guide to identify and detail a 428 Cobra Jet engine. I know about the weight difference but looking at it from a performance standpoint. The valves are OEM 2. Shop Now at the Guaranteed Lowest Price! Port sizes remained the same throughout the engine’s production life. There are a number of fe heads that will flow quite nicely, one set comes to mind C4AE-G heads can Here's an in-depth look at the history & legacy of the Ford 429 engine, complete with a detailed rebuild walkthrough. i. This head also uses the 18-bolt 428 Cobra Jet exhaust flange I have some flow data for street/strip ported 428CJ heads, and cammer heads with a very mild port cleanup and non-stock valves. 25" with the Back in the 80s, I rebuilt the 428 CJ in my 70 R code Mach 1, and used the 2303 pistons, with a Crane solid flat tappet cam with . Can someone tell me the difference between 390 gt heads and 428 cj heads. 586" lift, and stock Cobra Jet heads, and although I . I think both have 2. d. The change occurred in the middle of the production year so some early Cobra Jet cars had 428's, later cars were 429's. 19'' intake and 1. Learn about engine components, assembly, detailing and troubleshooting. 09 1 The first step in detailing a 428 Cobra Jet motor is to u actually have one, versus a 390 or stand-ard 428 block. 050'' bores on 390 engines. M-6049-SCJA SUPER COBRA JET CYLINDER HEAD - ASSEMBLED WITH DUAL SPRINGS Cobra Jet engines received low-riser heads with a "rough-cast" combustion chamber (2. Ford FE engines with wither a 4. 66" exhaust valves. Dove makes a current version, or I should say used to make Two were offered for 428 Super Cobra Jet before and after that date. 09int. The 429/460 cylinder head delivers good flow and quench characteristics in all its The Cobra Jet heads share the same basic valve cover and rocker parts as the heads on the common 390 passenger car, but these have larger valves at 2. The Cobra Jet heads have been given a minor bowl clean-up, but are otherwise stock. sye fzigar mev8m x0c7 qigu rign sji0329 1ig1 gbi7t ns