hello,
i am getting ready to install my Airflow Research Heads onto my 347 and i have a few questions. The combo is as follows:
1991 5.0 stock Ford roller block punched .030 over
Probe Street Fighter 347 stroker kit w\ forged aluminum pistons and cast crank
-reciprocating assembly is balanced (obviously)
the block is at stock deck height it has not been zero decked
Ford Racing E-303 cam
AFR 185cc 2.02" 1.60" 61cc cumbustion chamber
Edelbrock Performer RPM fuel injected intake
70mm Edelbrock throttle body
73mm C&L mass air meter
30 lb./hr Ford Racing injectors
My questions are:
1. I planned on running 1.7 roller rockers with the heads and i just talked to a local speed shop that said the 1.7's wil be really hard on the valve seats,guides,etc. Is this true? Thaey also told me that the performance gain would not be much. I was told by Probe, which is where my heads came from that with 1.7's and the e-303 cam that i would be up to .520 lift. Is it worth it to use the 1.7's or should I go with 1.6s. The car is kind of a daily driver with occasional drag duty, i like to have some kind of dependability, I also don't want to ruin an expensive heads, but i would like to get as much power as possible for now out of the engine without doing porting work or power adders.
2. I want to stud the the block for the cylinder heads and i an wondering if i will need shims on the heads where the nuts will tighten down?
3. i want to "mock" the engine before it is fired to check clearances,etc. i have never done this before i was told to put play dough on the pistons and set everything up like it would be when the engine is assembled and turn it by hand, is this correct? When "mocking" the engine do i want to have the head gaskets installed and do i torque the heads to the recommended spec?
4. i also need to find out what size of pushrods to use, i was told about a tool that i saw in jegs that is a pushrod length checker is this what i want to use?
5. How do i make sure that the roller rockers are centered on the valve tip?
6. Will the 1.6s and 1.7 work with the stock 1991 valve covers?
horsepower to the people,
ponyboystroker
i am getting ready to install my Airflow Research Heads onto my 347 and i have a few questions. The combo is as follows:
1991 5.0 stock Ford roller block punched .030 over
Probe Street Fighter 347 stroker kit w\ forged aluminum pistons and cast crank
-reciprocating assembly is balanced (obviously)
the block is at stock deck height it has not been zero decked
Ford Racing E-303 cam
AFR 185cc 2.02" 1.60" 61cc cumbustion chamber
Edelbrock Performer RPM fuel injected intake
70mm Edelbrock throttle body
73mm C&L mass air meter
30 lb./hr Ford Racing injectors
My questions are:
1. I planned on running 1.7 roller rockers with the heads and i just talked to a local speed shop that said the 1.7's wil be really hard on the valve seats,guides,etc. Is this true? Thaey also told me that the performance gain would not be much. I was told by Probe, which is where my heads came from that with 1.7's and the e-303 cam that i would be up to .520 lift. Is it worth it to use the 1.7's or should I go with 1.6s. The car is kind of a daily driver with occasional drag duty, i like to have some kind of dependability, I also don't want to ruin an expensive heads, but i would like to get as much power as possible for now out of the engine without doing porting work or power adders.
2. I want to stud the the block for the cylinder heads and i an wondering if i will need shims on the heads where the nuts will tighten down?
3. i want to "mock" the engine before it is fired to check clearances,etc. i have never done this before i was told to put play dough on the pistons and set everything up like it would be when the engine is assembled and turn it by hand, is this correct? When "mocking" the engine do i want to have the head gaskets installed and do i torque the heads to the recommended spec?
4. i also need to find out what size of pushrods to use, i was told about a tool that i saw in jegs that is a pushrod length checker is this what i want to use?
5. How do i make sure that the roller rockers are centered on the valve tip?
6. Will the 1.6s and 1.7 work with the stock 1991 valve covers?
horsepower to the people,
ponyboystroker