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What cam bearings were used for E303 install in 302

Reply #15 – February 10, 2015, 05:07:28 PM

The E6 heads are quite possibly the worst heads put on a 302/5.0 from the factory. If you still have the E5 heads use them instead of the E6 heads. The E6 heads actually flow less air than the E5 heads.

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What cam bearings were used for E303 install in 302

Reply #16 – February 10, 2015, 08:15:31 PM

The 86-88s.o. blocks not only have worse heads, but they also have no valve releifs in the pistons, decreasing ptv compared to basically any other sbf made.

Id clean up the e5's or swap to e7's. If you want oem reliability and performance, the gt40 or gt40p heads are the best factory heads, p heads require specific headers.

Make sure when you button everything up, you check piston to valve. I personally would still stick with the h.o. cam over the e cam "upgrade", but the ecam would likely be better on a carbed motor, assuming valves clear.

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What cam bearings were used for E303 install in 302

Reply #17 – February 10, 2015, 08:17:07 PM

Btw, a e6 to e7 swap generally gains anywhere from 5-15hp with no other changes according to coolcats.net.

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What cam bearings were used for E303 install in 302

Reply #18 – February 11, 2015, 01:39:55 AM

OP, I'd really suggest some HO pistons while you've got the block that far apart. I have a set from an HO that I took apart...with them in the block, the e cam will not be an issue. As mentioned, I'd be very leery of the e cam with the flat tops. Not trying to spin you for a buck...but would hate to see a fresh engine ruined..

If you were closer, I'd make you a deal on a solid and complete HO engine...needs a rebuild though, but it's all there, minus headers.

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