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Forum: Pontiac - Street 10-22-2021, 08:42 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
hey Karl, so klein ist die Welt :) ...

hey Karl,

so klein ist die Welt :)

good to see I'm not the only Austrian who likes this forum! have a good one

Chris
Forum: Pontiac - Street 10-22-2021, 08:38 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
I was told that most times the total lift is a...

I was told that most times the total lift is a little less than what you would expect by using only "theoretical" specs in the calculator.. with .594 lift I'm still .056 away from coil bind, so using...
Forum: Pontiac - Street 10-22-2021, 06:41 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
so the biggestet concern is coil bind, valves or...

so the biggestet concern is coil bind, valves or other parts will not have trouble with more lift?

I think there are 6 coils so I would need to calculate 1.800 - 1.150 - 0.060 = 0.590
The max...
Forum: Pontiac - Street 10-22-2021, 05:53 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
A general question when increasing valve lift...

A general question when increasing valve lift with 1.65 rockers:

How can I know how much lift the valve springs support apart from calculating coil bind? (which will be fine with my combination)...
Forum: Pontiac - Street 10-19-2021, 11:10 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
I think its 61599… but I got the test results...

I think its 61599… but I got the test results from Motortrend which seem to be a little different from the otter flow chart.. but they are pretty close
Forum: Pontiac - Street 10-19-2021, 09:18 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
you're right, I checked some that I can easily...

you're right, I checked some that I can easily see and they all seem to look like on the picture... but I cannot confirm that for all 16
it's good to know, that they tend to point more towards the...
Forum: Pontiac - Street 10-19-2021, 07:32 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
so if I get Scorpion Race rockers with 1.65...

so if I get Scorpion Race rockers with 1.65 instead of my 1.5 I should be fine?
if it moves toward the stud, I think there is some space, since it seems to be little off center at the moment with a...
Forum: Pontiac - Street 10-18-2021, 05:47 PM
Replies: 31
Views: 1,986
Posted By Chris-Austria
when changing from 1.5 to 1.65 ratio, which...

when changing from 1.5 to 1.65 ratio, which direction will the pushrod travel?
closer to the intake side or closer to the exhaust side?

thats how it looks with my 1.5 ratio rockers
...
Forum: Pontiac - Street 10-17-2021, 03:43 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
my valve springs would be fine with the 1.65...

my valve springs would be fine with the 1.65 rockers

the valve lift now is 0.521 and 0.540 with 1.5 rockers, so with 1.65 it will be 0.573 and 0.594

the springs have a installed height of 1.800...
Forum: Pontiac - Street 10-16-2021, 02:57 PM
Replies: 31
Views: 1,986
Posted By Chris-Austria
I was also wondering if it's worth the effort......

I was also wondering if it's worth the effort... heads are not ported, standard Eheads (d-port). The cam is a HR 236/242/114 from Butler, intake is a RPM (gasket matched) and I use a Sniper EFI with...
Forum: Pontiac - Street 10-16-2021, 07:35 AM
Replies: 31
Views: 1,986
Posted By Chris-Austria
I have 5/16" pushrods from Butler...

I have 5/16" pushrods from Butler (8.800x.116x5/16").
The E-heads are from maybe 2015 or so, not sure if these are considered "early".

I also have HR lifters, so maybe I could use 1.65 rockers...
Forum: Pontiac - Street 10-15-2021, 04:46 PM
Replies: 31
Views: 1,986
Posted By Chris-Austria
make clearance for 1.65 rockers

Hi,

if I want 1.65 rockers for my E-heads, will I need to work on the pushrod holes?
If so, can I do this with the heads still installed? Maybe remove the valley pan, remove the lifters and seal...
Showing results 1 to 12 of 12

 
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